Top Circuits Page 189
- Page 189
-
The material is presented in a manner suitable for a teaching tool. It seeks to enlighten and to spark off interest in the design of counters. As R. S. S Obermann remarks ". design of counters has, in my experience, always been an excellent proving ground....
-
-
This is a functionally complete, four-quadrant, analog multiplier. Four quadrant means that both operands that are multiplied can take any polarity i. e. +/- and hence multiplication can happen across 4 quadrants. It includes high impedance, differential X....
-
One approach to generating sine waves is to filter a square If a lower distortion oscillator is needed the circuit in Figure wave This leaves only the sine wave fundamental as the 2 can be used Instead of driving the tuned circuit with a output Since a....
-
A power supply in a system utilizing as a source of fuel a generator for separating hydrogen and oxygen gasses from natural water and having the capabilities to control the production of gasses by varying the amplitude of the voltage and/or the pulse....
-
The basic idea is that the transmitter sends beeps and you turn the directional antenna until you get maximum signal and that is the direction of the transmitter. It doesn`t work terribly well. The reason being the antenna is quite sensitive, so even though....
-
-
-
Everything works just great. The final software is 930 lines of assembler. I also learnt how to use ProTel so I could draw up the final circuit properly. Here`s the result. Notice that I`ve got it down to just one chip now, the little PIC is doing....
-
Next to the CLOCK input shows that it is edge-triggered, that is, it responds to sudden changes in voltage, but not to slow changes or to steady logic levels. The CLOCK input of the 4013 D-type bistable is rising-edge triggered, meaning that it responds only....
-
The inputs of the gate must be connected, either to LOW or to HIGH, and must not be left open circuit. This is the function of the input switches with their pull-down resistors. To avoid loading the output of the gate, a transistor switch indicator circuit....
-
Circuits using large value resistor/capacitor combinations are not very accurate because of the wide tolerance and leakage current of polarised capacitors. A better solution is to use an astable circuit together with a binary counter/divider chain which....
-
When the games timer is RESET, two things must happen. The 4017 counter must go back to zero and the 4060 astable/divider must go back to zero. (If we left the 4060 running, it would not be synchronised with the 4017 and erratic times would result. ) The....
-
-
A meter is a measuring instrument. An ammeter measures current, a voltmeter measures the potential difference (voltage) between two points, and an ohmmeter measures resistance. A multimeter combines these functions, and possibly some additional ones as well,....
-
The capacitor consists of two sheets of aluminium foil. Leave the foil inside the plastic packets and make connections using crocodile clips. The crocodile clips must not touch each other. The initial frequency of the pulses can be divided by up to 214....
-
This page steps through each section of my implementation of BAMTRAT. Many of the component values shown were determined experimentally, to suit my own tastes and preferences. As when building an acoustic instrument, there is a lot of room for....
-
The purpose of this page is neither to give a comprehensive review of this popular theremin design, nor to be an introduction to the fascinating and quirky world of theremins in general. If you`re wondering "What the heck is a theremin ", check out the links....
-
The Muntz one-tube design can be considerably improved by adding an audio preamplifier stage. This will give improved sensitivity, and thus give full modulation with lower-level signal sources (such as some older CD players, ceramic phono cartridge, etc. ).....
-
The diagram below shows that power supplies don`t have to be complicated, especially in low-power designs. The filaments are powered directly from the 120 volt AC line, minimising the size of the transformer(s) required to drive the amplifier. Note the....
-
AC power is supplied via AC Fuse F1 and Power On/Off switch S1 to 6. 3V filament transformer T1. Fuse F2 is provided as an additional safety feature, since a short to the filament transformer may not be enough to blow the main power fuse. Hum balance pot R1....
-
The chassis layout has been designed, and the 17" x 14" x 3" steel chassis is ready for drilling and hole-cutting. There`s no backing off now, Dogzilla will live! It`s actually starting to look like a piece of gear. Most of the chassis parts mounted, except....
-
The first was interested in a flexible preamp for use with a high-end acoustic guitar with piezo-electric bridge pickup, and the second wanted a preamp for use with a guitar emulator, to provide add someof the warmth that vacuum valves can provide. Both of....
-
This project uses just one tube. However, the tube chosen (13EM7) actually contains two separate triode structures. One is physically quite small, and is capable of a large signal gain but little power. It therefore makes an ideal preamplifier stage. The....
-
As in the original single-ended design, the push-pull MiniBlok II uses the relatively inexpensive 13EM7 "dissimilar dual triode" (or its variants the 10EM7 or 13EM7/15EA7). Using the same tube with essentially the same operating point makes for a more....
-
If you`re just building a dual stand-alone preamplifier (as for, say, a stereo magnetic phono preamp), your power supply requirements will of course be greatly reduced. Figure 5A shows a simple supply using readily-available 12 volt, 1/2 ampere transformers....
-
A Goodman Janitrol 2. 5 ton Standard Air Handler model #ARUF030-00A-1. After troubleshooting, I discovered that the only way to shut the fan off is by turning off the breaker or disconnecting the black wire that leads from the fan to the circuit board. There....
-
We have a coil wound over a non-conductive tube which is the coilgun`s barrel, of course. It has to be non conductive (plastic or something comparable) because otherwise the coil`s magnetic field would simply cancel out itself inside the tube. The projectile....
-
-
To me the E1T counting tube is unmistakably one of the most intriguing tubes ever made. It was invented and developed into a product by Philips in the period 1946-1954. On one of my other pages I have posted an in-depth study of it`s origins. It has long....
-
The history of a pioneering tube that was developed by Philips Research and that was, next to the magnetron, The most important tube from World War II The radio valve factory of Philips in Eindhoven was the scene of unusual tension and activity in the....
-
-
The clock described on this page is the result of both events, a simple single digit nixie clock with some interesting features, but without any difficult components. This clock first of all demonstrates that it is possible to use standard, low-voltage,....
-
-
Instead of simply incrementing the time every new second, it would be great to have a display of forward- and backward-spinning digits, slowly rolling-out to the new time, a little bit like the reels of a slot machine. Having never encountered them,....
-
In the NIXIE clocks that I have built, I did not want to have the big and ugly mains transformer in the actual clock itself. Instead I use an AC adapter that fits into the mains wall plug. This means that I have to use some sort of an up-converter to....
-
Happened to have in my NIXIE collection a single beautiful giant ZM1042 (for the record, I got it from Jim Oostveen). For me it was obvious that a single digit NIXIE clock built around this tube would be just the thing for Geert. Some time ago, while....
-
The term "mixed-signal" is usually reserved for circuits and ICs that process both analog and digital signals. In that sense the title "A mixed-signal LED clock" is perhaps misleading since this is a digital clock from beginning to end. However, the readout....
-
We mounted one of them on a wooden sigar box and connected the anode via a large series resistance to the live wire of the 220V mains! Just by touching one of the cathodes it was possible to make the numbers glow.I think that this was the beginning of my....
-
The B8422 Nixie tubes were destined to end up in an alarm clock on my bedside cupboard. My house is slowly filling up with homemade clocks, only our bedroom has so far been saved from the "collateral damage" of my clock making mania. A set of romantically....
-
The idea was that you removed the center page from the magazine and cut it into four pieces to obtain a card that would fit into a filing system. The front side of each card would gave the connections to the IC, while the other side would contain technical....
-
-
The E1T tube you see on the left has been "in the family" for as long as I can remember. Probably my father took it home from work (he worked at the Shell laboratory in Rotterdam) or he bought it in one of the surplus shops in Rotterdam my father and I used....
-
In an instrument like the uTracer, which handles voltages of several hundreds of Volts at currents of several hundreds of mA, it is obvious that an error or malfunction can easily result in the destruction of (a part of) the circuit, especially so since the....
-
-
a miniature version of the classic PONG game. The PONG game was invented back in 1966 by Ralph Baer [1, 2]. In the seventies the game became very popular and I remember that as a child I was completely fascinated by it. We had a later version at home, and on....
-
The oscilloscope is still one of the most important measurement tools of the electronic engineer. With the advent of the often very reasonably priced USB scopes, such an instrument is now within reach of every body. Twenty five years ago that was quite a....
-
The distortion produced by a typical solid-state Class-B power amplifier is shown to consist of eight mechanisms, all of which may co- exist and whose distortion products overlap to give a complex result. Methods for isolating each mechanism for study, and....
-
This product is amazing. My computer was having issues with the registry. After installing, scanning, and fixing the errors my computer now runs like it is brand new. I would recommend this to others...
-
A good thing too since I initially hooked the p-channel mosfets up backwards. No smoke fortunately. I`m using Pololu gear headmotors (although continuous rotation servos will also be supported). In order to drive the motors in either direction I`m using....
-
As the robot`s battery voltage would slowly drop, the servo`s centre point would drift. After a while, one or both servo motors would begin to creep even though they should have been stopped. Secondly, servos are designed to hold a position and not a set....
-
The schematic is this fairly simple transistor circuit: Seeing schematics with transistors in them brings back a flood of memories to my college days when I was taking EE classes and I used to know how to do this stuff in my sleep. Unfortunately, that was....
-
-
-
-
-
-
the input signal is processed with an electronic low-pass filter to remove all frequencies above the Nyquist frequency (one-half the sampling rate). This is done to prevent aliasing during sampling, and is correspondingly called an antialias filter. On the....
-
Digital filters are incredibly powerful, but easy to use. In fact, this is one of the main reasons that DSP has become so popular. As an example, suppose we need a low-pass filter at 1 kHz. This could be carried out in analog electronics with the following....
-
-
Battery manufacturers recommend charging 12V lead-acid batteries at a charge voltage of 13. 5 - 13. 8V for standby, and 14. 4 v - 15v for cyclic use(charging and discharging) - but if using the latter, which gives a faster charge, you must turn it off when....
-
Commander allows you to control your Alinco, Elecraft, Flexradio, Icom, JRC, Kachina, Kenwood, TenTec, or Yaesu radio from a PC running Windows 95, 98, NT, 2000, XP, Vista, 7, or 8; both 32-bit and 64-bit flavors of Windows are supported. Commander is free,....
-
Create a PC synch cord off of the extension cable by putting in a connector and having different plugs on the opposite end. So if I read this correctly, you could create a PC synch cord off of the extension cable by putting in a connector and having....
-
This is a 100 watt basic power amp that was designed to be (relatively) easy to build at a reasonable cost. It has better performance (read: musical quality) than the standard STK module amps that are used in practically every mass market stereo receiver....
-
-
To ensure a full-load start-up, the extra circuitry in this regulated boost converter disconnects the load until the output voltage achieves regulation. Proper operation requires a gate-drive voltage sufficient to provide low on-resistance in the switching....
-
The following demonstrates a power saving circuit that pulses a Sensor for 1 second every 30 minutes. Designed to monitor levels of salt The Sensor shown is an Optocoupler with an infrared-emitting Diode Designed to monitor the level of salt Crystals in a....
-
Crystal X1 is fundamental mode, calibrated for parallel resonance with a 32 pF load. The final output frequency is generated by frequency multiplication within the MC2833 IC. The RF output Buffer (Pin 14) and Q2 Transistor are used as a frequency tripler and....
-
Maxim s DG508A and DG509A are monolithic CMOS Analog Multiplexers (muxes): the DG508A is a single 8-channel (1-of-8) mux, and the DG509A is a differential 4-channel (2-of-8) mux. Both devices guarant....
-
This IC is a wideband RGB Video Amplifier with DC control developed for monitors. It includes three matched video amps, a differential input Comparator for brightness adjustment, and three matched DC ....
-
The LA7051 is a video, Audio signal processor IC for UHF band RF Modulator It performs the functions of Audio FM Modulator video clamp circuit, white clip circuit....
-
The MAX2620 combines a low-noise Oscillator with two output Buffers in a low-cost, plastic surface-mount, ultra-small uMAX package. This device integrates functions typically achieved with discrete co....
-
The MC74HC4538A is identical in pinout to the MC14538B. The device inputs are compatible with standard CMOS outputs; with pullup Resistors they are compatible with LSTTL outputs. This dual monostable....
-
The TDA7010T is a monolithic integrated circuit for mono FM portable radios, where a minimum on peripheral components is important (small dimensions and low costs). The IC has an FLL (Frequency-Locked....
-
The TDA7021T integrated radio Receiver circuit is for portable radios, stereo as well as mono, where a minimum of periphery is important in terms of small dimensions and low cost. It is fully compatib....
-
The HT70XX series is a set of three-terminal low power Voltage Detectors implemented in CMOS technology. Each Voltage Detector in the series detects a particular fixed voltage ranging from 2. 2V to 7V. The Voltage Detectors consist of a high-precision and....
-
The three-tone ringing integrated circuit U4076B in conjunction with a piezo transducer or loudspeaker replaces the normal electromechanical telephone bell. It is operated with the ringing current fr....
-
The AS3636 is a highly integrated Photoflash charger including IGBT driver, inductive DCDC boost autofocus/ video LED driver, an indicator LED driver and it includes system level ESD protection and a ....
-
Microsemi?s LX6512 is a cost effective, Direct Drive CCFL (Cold Cathode Fluorescent Lamp) controller. The integrated controller is optimized to drive CCFL?s (Cold Cathode Fluorescent Lamps) us....
-
UTC KA22427 is a one-chip AM/FM radio integrated circuit that is suitable for portable radio applications. It includes AM amplifier, local OSC, AM mixer, AM/FM amplifier, AM AGE, FM AGE circuit an....
-
Tho TA8184P TA8184F is DC controlled dual volume, balance, Tone (8ass and treble) IC. it is suitable for car stereo, radio cassette, music center, TV multiplex sound Receiver end remote controlled ap....
-
A PING Ultrasonic Range Finder to build up a system which is capable of detect and measure the distance (in mm unit) of the closest object in front of the sensor. It is like a digital measuring tape where you point the sensor to an object, press the read....
-
Basically, the circuit is using relay (2 set of Relay for each Motor) to switch the direction of the motor and MOSFET (1 set of MOSFET for each Motor) to control the speed of the motor. I will divide the MOSFET + Relay circuit into 3 part for the....
-
This is a simple LED blinking project using PIC16F877A. Basically there are only 2 LEDs, connected to PIC16F877A and the source code is being modified from the 16F template....
-
To operate a microcontroller, you need some basic components to support it and the circuit we call it basic circuit. The components needed are very common and you can find them at any electronics store out there. Here, i will share the schematic of basic....
-
E Shore Technologies is a robotic solution provider company in Malaysia. We provide robotic parts, robotic services, embedded system and hobby kit for the robotic market and in the mean time we open source everything we know about robotics, electronics,....
-
This would require a 1200 rpm synchronous motor and a light source, which would be made of a row of LEDs, arranged vertically, and located about 6 inches from the screw. My plan was enclose it in a clear plastic cabinet so all the components would be....
-
There is not a coaxial input to the motor control chassis, so I doubt that composite sync was fed to it (cables would be 5 or 6 feet long), which might rule out a sync pulse for the red field. Some other interesting things. The CRT has the pin type anode....
-
-
-
-
-
I don`t want to use carbon offsetting, eg planting trees that nominally soak up some agreed amount of carbon/CO2 (for a while), but rather I want to genuinely and measurably reduce consumption and/or (micro)generate some of the energy that I consume, causing....
-
This particular model speaks in a pleasant female voice at the touch of a button, and if you need to be reminded of something during the day, it has an alarm function to, for example, wake you up from a nap at a prescribed time (via a live rooster alarm....
-
-
-
-
-
-
Drive and two-phase hybrid stepper motor`s connection with the four-wire system, the motor windings in parallel and series connection, and connection method, high-speed performance, but the drive current is large (for motor winding current of 1. 73 times),....
-
-
The frequency jammer works by creating interfering RF noise, centered around the 2. 45 GHz carrier. As the power associated with the noise increases, the signal to noise ratio for the wireless communication channel decreases. This increases the bit error....
-
The XLR connector allows us to connect the microphone`s output to our preamplifier circuit. This preamplifier was designed and built by our Electrical Engineers using discrete components. The preamplifier`s signal is then fed to the Maxim Class-D amplifier.....
The material is presented in a manner suitable for a teaching tool. It seeks to enlighten and to spark off interest in the design of counters. As R. S. S Obermann remarks ". design of counters has, in my experience, always been an excellent proving ground....
This is a functionally complete, four-quadrant, analog multiplier. Four quadrant means that both operands that are multiplied can take any polarity i. e. +/- and hence multiplication can happen across 4 quadrants. It includes high impedance, differential X....
One approach to generating sine waves is to filter a square If a lower distortion oscillator is needed the circuit in Figure wave This leaves only the sine wave fundamental as the 2 can be used Instead of driving the tuned circuit with a output Since a....
A power supply in a system utilizing as a source of fuel a generator for separating hydrogen and oxygen gasses from natural water and having the capabilities to control the production of gasses by varying the amplitude of the voltage and/or the pulse....
The basic idea is that the transmitter sends beeps and you turn the directional antenna until you get maximum signal and that is the direction of the transmitter. It doesn`t work terribly well. The reason being the antenna is quite sensitive, so even though....
Everything works just great. The final software is 930 lines of assembler. I also learnt how to use ProTel so I could draw up the final circuit properly. Here`s the result. Notice that I`ve got it down to just one chip now, the little PIC is doing....
Next to the CLOCK input shows that it is edge-triggered, that is, it responds to sudden changes in voltage, but not to slow changes or to steady logic levels. The CLOCK input of the 4013 D-type bistable is rising-edge triggered, meaning that it responds only....
The inputs of the gate must be connected, either to LOW or to HIGH, and must not be left open circuit. This is the function of the input switches with their pull-down resistors. To avoid loading the output of the gate, a transistor switch indicator circuit....
Circuits using large value resistor/capacitor combinations are not very accurate because of the wide tolerance and leakage current of polarised capacitors. A better solution is to use an astable circuit together with a binary counter/divider chain which....
When the games timer is RESET, two things must happen. The 4017 counter must go back to zero and the 4060 astable/divider must go back to zero. (If we left the 4060 running, it would not be synchronised with the 4017 and erratic times would result. ) The....
A meter is a measuring instrument. An ammeter measures current, a voltmeter measures the potential difference (voltage) between two points, and an ohmmeter measures resistance. A multimeter combines these functions, and possibly some additional ones as well,....
The capacitor consists of two sheets of aluminium foil. Leave the foil inside the plastic packets and make connections using crocodile clips. The crocodile clips must not touch each other. The initial frequency of the pulses can be divided by up to 214....
This page steps through each section of my implementation of BAMTRAT. Many of the component values shown were determined experimentally, to suit my own tastes and preferences. As when building an acoustic instrument, there is a lot of room for....
The purpose of this page is neither to give a comprehensive review of this popular theremin design, nor to be an introduction to the fascinating and quirky world of theremins in general. If you`re wondering "What the heck is a theremin ", check out the links....
The Muntz one-tube design can be considerably improved by adding an audio preamplifier stage. This will give improved sensitivity, and thus give full modulation with lower-level signal sources (such as some older CD players, ceramic phono cartridge, etc. ).....
The diagram below shows that power supplies don`t have to be complicated, especially in low-power designs. The filaments are powered directly from the 120 volt AC line, minimising the size of the transformer(s) required to drive the amplifier. Note the....
AC power is supplied via AC Fuse F1 and Power On/Off switch S1 to 6. 3V filament transformer T1. Fuse F2 is provided as an additional safety feature, since a short to the filament transformer may not be enough to blow the main power fuse. Hum balance pot R1....
The chassis layout has been designed, and the 17" x 14" x 3" steel chassis is ready for drilling and hole-cutting. There`s no backing off now, Dogzilla will live! It`s actually starting to look like a piece of gear. Most of the chassis parts mounted, except....
The first was interested in a flexible preamp for use with a high-end acoustic guitar with piezo-electric bridge pickup, and the second wanted a preamp for use with a guitar emulator, to provide add someof the warmth that vacuum valves can provide. Both of....
This project uses just one tube. However, the tube chosen (13EM7) actually contains two separate triode structures. One is physically quite small, and is capable of a large signal gain but little power. It therefore makes an ideal preamplifier stage. The....
As in the original single-ended design, the push-pull MiniBlok II uses the relatively inexpensive 13EM7 "dissimilar dual triode" (or its variants the 10EM7 or 13EM7/15EA7). Using the same tube with essentially the same operating point makes for a more....
If you`re just building a dual stand-alone preamplifier (as for, say, a stereo magnetic phono preamp), your power supply requirements will of course be greatly reduced. Figure 5A shows a simple supply using readily-available 12 volt, 1/2 ampere transformers....
A Goodman Janitrol 2. 5 ton Standard Air Handler model #ARUF030-00A-1. After troubleshooting, I discovered that the only way to shut the fan off is by turning off the breaker or disconnecting the black wire that leads from the fan to the circuit board. There....
We have a coil wound over a non-conductive tube which is the coilgun`s barrel, of course. It has to be non conductive (plastic or something comparable) because otherwise the coil`s magnetic field would simply cancel out itself inside the tube. The projectile....
To me the E1T counting tube is unmistakably one of the most intriguing tubes ever made. It was invented and developed into a product by Philips in the period 1946-1954. On one of my other pages I have posted an in-depth study of it`s origins. It has long....
The history of a pioneering tube that was developed by Philips Research and that was, next to the magnetron, The most important tube from World War II The radio valve factory of Philips in Eindhoven was the scene of unusual tension and activity in the....
Instead of simply incrementing the time every new second, it would be great to have a display of forward- and backward-spinning digits, slowly rolling-out to the new time, a little bit like the reels of a slot machine. Having never encountered them,....
In the NIXIE clocks that I have built, I did not want to have the big and ugly mains transformer in the actual clock itself. Instead I use an AC adapter that fits into the mains wall plug. This means that I have to use some sort of an up-converter to....
We mounted one of them on a wooden sigar box and connected the anode via a large series resistance to the live wire of the 220V mains! Just by touching one of the cathodes it was possible to make the numbers glow.I think that this was the beginning of my....
In an instrument like the uTracer, which handles voltages of several hundreds of Volts at currents of several hundreds of mA, it is obvious that an error or malfunction can easily result in the destruction of (a part of) the circuit, especially so since the....
The distortion produced by a typical solid-state Class-B power amplifier is shown to consist of eight mechanisms, all of which may co- exist and whose distortion products overlap to give a complex result. Methods for isolating each mechanism for study, and....
This product is amazing. My computer was having issues with the registry. After installing, scanning, and fixing the errors my computer now runs like it is brand new. I would recommend this to others...
A good thing too since I initially hooked the p-channel mosfets up backwards. No smoke fortunately. I`m using Pololu gear headmotors (although continuous rotation servos will also be supported). In order to drive the motors in either direction I`m using....
As the robot`s battery voltage would slowly drop, the servo`s centre point would drift. After a while, one or both servo motors would begin to creep even though they should have been stopped. Secondly, servos are designed to hold a position and not a set....
The schematic is this fairly simple transistor circuit: Seeing schematics with transistors in them brings back a flood of memories to my college days when I was taking EE classes and I used to know how to do this stuff in my sleep. Unfortunately, that was....
the input signal is processed with an electronic low-pass filter to remove all frequencies above the Nyquist frequency (one-half the sampling rate). This is done to prevent aliasing during sampling, and is correspondingly called an antialias filter. On the....
Digital filters are incredibly powerful, but easy to use. In fact, this is one of the main reasons that DSP has become so popular. As an example, suppose we need a low-pass filter at 1 kHz. This could be carried out in analog electronics with the following....
Battery manufacturers recommend charging 12V lead-acid batteries at a charge voltage of 13. 5 - 13. 8V for standby, and 14. 4 v - 15v for cyclic use(charging and discharging) - but if using the latter, which gives a faster charge, you must turn it off when....
Commander allows you to control your Alinco, Elecraft, Flexradio, Icom, JRC, Kachina, Kenwood, TenTec, or Yaesu radio from a PC running Windows 95, 98, NT, 2000, XP, Vista, 7, or 8; both 32-bit and 64-bit flavors of Windows are supported. Commander is free,....
Create a PC synch cord off of the extension cable by putting in a connector and having different plugs on the opposite end. So if I read this correctly, you could create a PC synch cord off of the extension cable by putting in a connector and having....
This is a 100 watt basic power amp that was designed to be (relatively) easy to build at a reasonable cost. It has better performance (read: musical quality) than the standard STK module amps that are used in practically every mass market stereo receiver....
To ensure a full-load start-up, the extra circuitry in this regulated boost converter disconnects the load until the output voltage achieves regulation. Proper operation requires a gate-drive voltage sufficient to provide low on-resistance in the switching....
The following demonstrates a power saving circuit that pulses a Sensor for 1 second every 30 minutes. Designed to monitor levels of salt The Sensor shown is an Optocoupler with an infrared-emitting Diode Designed to monitor the level of salt Crystals in a....
Crystal X1 is fundamental mode, calibrated for parallel resonance with a 32 pF load. The final output frequency is generated by frequency multiplication within the MC2833 IC. The RF output Buffer (Pin 14) and Q2 Transistor are used as a frequency tripler and....
Maxim s DG508A and DG509A are monolithic CMOS Analog Multiplexers (muxes): the DG508A is a single 8-channel (1-of-8) mux, and the DG509A is a differential 4-channel (2-of-8) mux. Both devices guarant....
This IC is a wideband RGB Video Amplifier with DC control developed for monitors. It includes three matched video amps, a differential input Comparator for brightness adjustment, and three matched DC ....
The LA7051 is a video, Audio signal processor IC for UHF band RF Modulator It performs the functions of Audio FM Modulator video clamp circuit, white clip circuit....
The MAX2620 combines a low-noise Oscillator with two output Buffers in a low-cost, plastic surface-mount, ultra-small uMAX package. This device integrates functions typically achieved with discrete co....
The MC74HC4538A is identical in pinout to the MC14538B. The device inputs are compatible with standard CMOS outputs; with pullup Resistors they are compatible with LSTTL outputs. This dual monostable....
The TDA7010T is a monolithic integrated circuit for mono FM portable radios, where a minimum on peripheral components is important (small dimensions and low costs). The IC has an FLL (Frequency-Locked....
The TDA7021T integrated radio Receiver circuit is for portable radios, stereo as well as mono, where a minimum of periphery is important in terms of small dimensions and low cost. It is fully compatib....
The HT70XX series is a set of three-terminal low power Voltage Detectors implemented in CMOS technology. Each Voltage Detector in the series detects a particular fixed voltage ranging from 2. 2V to 7V. The Voltage Detectors consist of a high-precision and....
The three-tone ringing integrated circuit U4076B in conjunction with a piezo transducer or loudspeaker replaces the normal electromechanical telephone bell. It is operated with the ringing current fr....
The AS3636 is a highly integrated Photoflash charger including IGBT driver, inductive DCDC boost autofocus/ video LED driver, an indicator LED driver and it includes system level ESD protection and a ....
Microsemi?s LX6512 is a cost effective, Direct Drive CCFL (Cold Cathode Fluorescent Lamp) controller. The integrated controller is optimized to drive CCFL?s (Cold Cathode Fluorescent Lamps) us....
UTC KA22427 is a one-chip AM/FM radio integrated circuit that is suitable for portable radio applications. It includes AM amplifier, local OSC, AM mixer, AM/FM amplifier, AM AGE, FM AGE circuit an....
Tho TA8184P TA8184F is DC controlled dual volume, balance, Tone (8ass and treble) IC. it is suitable for car stereo, radio cassette, music center, TV multiplex sound Receiver end remote controlled ap....
A PING Ultrasonic Range Finder to build up a system which is capable of detect and measure the distance (in mm unit) of the closest object in front of the sensor. It is like a digital measuring tape where you point the sensor to an object, press the read....
Basically, the circuit is using relay (2 set of Relay for each Motor) to switch the direction of the motor and MOSFET (1 set of MOSFET for each Motor) to control the speed of the motor. I will divide the MOSFET + Relay circuit into 3 part for the....
This is a simple LED blinking project using PIC16F877A. Basically there are only 2 LEDs, connected to PIC16F877A and the source code is being modified from the 16F template....
To operate a microcontroller, you need some basic components to support it and the circuit we call it basic circuit. The components needed are very common and you can find them at any electronics store out there. Here, i will share the schematic of basic....
E Shore Technologies is a robotic solution provider company in Malaysia. We provide robotic parts, robotic services, embedded system and hobby kit for the robotic market and in the mean time we open source everything we know about robotics, electronics,....
This would require a 1200 rpm synchronous motor and a light source, which would be made of a row of LEDs, arranged vertically, and located about 6 inches from the screw. My plan was enclose it in a clear plastic cabinet so all the components would be....
There is not a coaxial input to the motor control chassis, so I doubt that composite sync was fed to it (cables would be 5 or 6 feet long), which might rule out a sync pulse for the red field. Some other interesting things. The CRT has the pin type anode....
I don`t want to use carbon offsetting, eg planting trees that nominally soak up some agreed amount of carbon/CO2 (for a while), but rather I want to genuinely and measurably reduce consumption and/or (micro)generate some of the energy that I consume, causing....
This particular model speaks in a pleasant female voice at the touch of a button, and if you need to be reminded of something during the day, it has an alarm function to, for example, wake you up from a nap at a prescribed time (via a live rooster alarm....
Drive and two-phase hybrid stepper motor`s connection with the four-wire system, the motor windings in parallel and series connection, and connection method, high-speed performance, but the drive current is large (for motor winding current of 1. 73 times),....
The frequency jammer works by creating interfering RF noise, centered around the 2. 45 GHz carrier. As the power associated with the noise increases, the signal to noise ratio for the wireless communication channel decreases. This increases the bit error....
The XLR connector allows us to connect the microphone`s output to our preamplifier circuit. This preamplifier was designed and built by our Electrical Engineers using discrete components. The preamplifier`s signal is then fed to the Maxim Class-D amplifier.....
.jpg "Repair of Iglide Rechargeable Batteries")
.jpg "A simple Electronic Microcalorimeter")
