New Circuits Page 197
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This is a The Directly (DC) Coupled Amplifier circuit. This circuit is built from NPN transistor and PNP transistor. This circuit is used to amplify a DC....
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The purpose of this robot is have a bot that can go around and map out a single floor of my house and then use that map to intelligently traverse the mapped area. So far I`ve only written some diagnostic software to verify all the subsystems of this robot....
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The safety shutdown and fault isolation protocol are critical in many telecommunication, industrial, data processing system and industrial. To share data....
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Instead of focusing on the mathematical and raw theoretical side of this simple pyro RF transmitter, we`ll be focusing on the elements in each of the stages. The math of how/why this circuit actually works is horridly ugly and way too complicated. so it`s....
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Circuit » Home » 7809 » 7812 » 7909 » 7912 » Dual Voltage » Hobby Electronics » Hobby electronics projects » RC filters » REGULATOR » transformer » Dual Voltage Power Supply 12 Volt This is the simple circuit diagram of Dual Voltage Power Supply. It is used....
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This broadband AM receiver enables you to monitor` the shortwave radio band. The circuit has been deliberately designed to have low selectivity and is most sensitive in the range from 6 to 20 MHz. This frequency range contains most of the shortwave broadcast....
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PIC16F84A Digital Thermometer Circuit The digital thermometer circuit is built, almost all by using the temperature sensor of some form of discrete components,...
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this verified project provide idea, circuit and working of the system LED display temperature indicator. Digital temperature indicator.using V/F converter.various electronics project...
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This ultra-simple remote control extender is ideal for use with a hidden video recorder. The recorder is a Panasonic NV-SD200 and is used as part of a camera surveillance system. A PICAXE-08-based circuit is used to detect events and control the recorder. It....
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The simple bell circuit without IC reward points: 0 | solution time : 10:20 | Asked by: Zhang Dan QiaoThanks for Related Content who simply doorbell doorbell circuit 19 music circuit, integrated circuits, transistors and resistors, respectively, what is the....
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Uses only six components per stage. Combining of counter and indicator functions gives low battery drain. After reset button is re leased, 0. 22-mid capacitor insures that first stage turns on. Current is drown by stage only when lamp is on. Any number of....
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The following circuit shows about Lie Detector Circuit Diagram. Features: capacitor and removes the 50Hz induced mains hum that is found on a ....
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The above is a stereo amplifier circuit based on IC STK4191 with 2 X 50Watt output power 8 ohm impedance. And besides that you can use some of the IC can also be applied in this series include the STK4101, 4111, 4121, 5131, 4141, 4151, 5161, 4171, 4181, and....
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This article is in continuation to the articleSingle character LCD display using AVR. The aforesaid article shows how to display a single letter onLCD. Moving forward towards learning to work with LCD, this article explains how to display a string on LCD.....
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Controlling heaters rated as high as 1500 watt requires stringent specifications with the controlling unit for safe and effective implementation of the intended operations. With the advent of advanced snubber-less Triacs and Diacs makingheatercontrollers at....
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Normally analogue-to-digital con-verter (ADC) needs interfacing through a chip to catechumen alternation abstracts into agenda format. This requires accouterments and all-important software, consistent in added complication and appropriately the absolute....
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Consumer appliances these days hardly ever have a proper mains switch. Instead, appliances are turned on and off at the touch of a button on the remote control, just like any other function. This circuit shows how a device (as long as it does not draw too....
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The PNP Transistor is the exact opposite to the NPN Transistor device we looked at in the previous tutorial. Basically, in this type of transistor construction the two diodes are reversed with respect to the NPN type giving a Positive-Negative-Positive type....
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I thought I would try to use a standard telephone earpiece`s inductance as the L of a Colpitts oscillator, and in so doing eliminate the need for a separate amplifer/buffer. ..
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Kids like the police or fire-brigade cars siren sound. This circuit can generate dual tone like Police or Fire-brigade cars siren sound. This circuit usually....
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A very simple low cost and ultra compact VHF UHF Low-Noise amplifiers circuit can be designed using the MAX2664 and MAX2665 ultra-compact LNAs for VHF/UHF applications. These devices incorporate a broadband LNA with an integrated bypass switch. The MAX2664....
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A Thermistor is used in the circuit for sensing the heat and two 5K variable resistors are used to adjust the circuit to activate the relay on the desired temperature. The purpose of using the 1N4007 diode across the relay is to limit the back EMF of the....
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This phone is loud ringing tone circuit for generating the electricity bell in the old telephone. This circuit is relatively loud. so can use to replacement the same ringer or the original telephone may be lost. We do not need a new phone. The detect ringing....
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I am looking for a simple circuit to simulate sensor inputs to PLC. Sensors take 12VDC and outputs 4-20mA. I was looking at your XTR series devices which seems to be able to achieve this but I am not sure which one will be ok to use for 12VDC voltage. Also,....
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Wireless power transfer is nothing new; it has been discussed since Tesla`s patent in 1900 entitled "Apparatus for Transmission of Electrical Energy" (USPTO #649, 621). However, as the technology matures, it will be interesting to see what myriad....
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An increasing number of appliances draw a very small current from the power supply. If you need to design a mains powered device, you could generally choo....
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A 96 ford explorer. My headlights do not work. I have low lights and interior lights. I have changed the bulbs, checked the fuses, relays and light switch and they still don`t work. Any suggestins or am Imissing something Ask-a-doc Web sites: If you`ve got a....
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This post assumes some knowledge of PCB etching methods and is an account of my experience with the toner transfer method. If this is new to you, you may have to get Googling on a few of things mentioned here. That said, I`ve linked to the sites I found most....
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Im pursuing a homemade photography LED array. Ideally, the LED array will be 6 series 5 parallel. (24 volts @ 1000mA per row). Each LED row is a different wavelength, together they make up the whole spectrum. Each LED row I want to have adjustable so you can....
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This simple water detector circuit uses alternative voltage in order to prevent the corrosion of the electrodes. It is easy to build and uses N1 as a trigger Schmitt gate which generate the AC. If between the electrodes is a electricity conductor, for....
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The tracker is easy to build on a perfboard. I used a basic one-pad-per-hole perfboard and 26-gauge wire, but 30-gauge would probably be better. All the electronic parts are available from Mouser Electronics. Radio Shack sells the perfboard and the 2. 5mm....
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Most metal detectors work on the fact that metals in a magnetic field change the behaviour of the field. There are two general approaches to detect these changes. In one approach, an alternating current is provided to a transmit coil. A receive coil is used....
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I made an hbridge using TPS2836 and CSD16404. The schematic is shown below. It does not work properly and I have a few questions about it. It would be great if you can point out where the design is wrong. 1. I gave a VDD-GND of 5V and tried to give the....
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ZSSC1856 of ZMDI Company is the double-channel ADC of integrating embedded MCU, made up of two chips, PQFN32 5x5mm capsulates. Basic chip SBC of the system Having included the high tension circuit, LIN transceiver and including the peripheral hardware, 18....
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The PTB78560x is a series of 30 W rated isolated DC/DC converters, designed to operate from a standard 24 V or 48 V telecom central office (CO) supply. Housed in a 12 package, each model has a wide-adjust output voltage that CAN be set to one of the common....
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The DDC lines on HDMI connector side are 47KOhms 5V PU and 2KOhms 3. 3V PU on FPGA side. Our schematic look like this one: This glitch is part of the normal operation of the DDC buffer in the AD8195. The glitch only occurs on the rising edge of the....
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This device was created in a hurry for the USC Rocket Propulsion Lab, the student-run high-altitude rocketry effort at USC. I think I soldered it together a day or two before the launch, and then programmed it on a laptop on the car trip out to the desert.....
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The AmpLoadPull project illustrates the use of the AmpLoadPull and LoadPullSetup components in ADS. These components are part of the ADS behavioral model suite found under the System - Data Models palette. "circuit_level_amplifier_1_tone. dsn" is a schematic....
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The circuitis a simple one transistor amplifier with amplification of about 30-40 dB (depends on transitor, temperature and voltage). The dynamic mic input is just a simple one transistor amplifier circuit with nothing special in it. LED D1 is inthe....
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A new type of NiMH battery known as HeCell has recently been developed, which is claimed to allow higher discharge rates than the conventional ones (about 12 - 16C). ..
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To lower or raise any specific voltage is better adapted from a transformer, but this component does not operate in direct current, which is available in battery or vehicle. Therefore we must put an oscillator that generates an alternative current. The....
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The Nixies I`m using have 10 cathodes (shaped like numerals) and a screen-like anode. These are old Russian IN-12A`s that I obtained from an excellent Ukrainian shop on eBay. Other Nixies might have more cathodes for a decimal point or other symbols (like....
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I would like you to generate a diagram showing all the hardware parts you will be using for your project, and how they are connected to each other. This diagram should clearly show the Arduino board as a box with lines going in and out of it, with arrows....
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This house FM transmitter for your stereo or any other amplifier provides a good signal strength up to a distance of 500 meters with a power output of about 200 mW. It works off a 9V battery. The audio-frequency modulation stage is built around transistor....
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A pattern generator is a very useful instrument for the correct alignment of the timing circuits of a television set. The circuit we propose you to build, is a «bar generator» that will produce horizontal and vertical stripes (bars) on the TV screen, that....
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Display lights problem on Nokia N73 can be caused by several reasons, for example broken path on the display circuit, damaged the display driver, and others. Here, mobile repair guide provide some pictures relating to Nokia N73 display problem, especially on....
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A low-voltage demonstration Tesla coil using a solid-state photovoltaic relay to replace the conventional spark gap has been analyzed and then built. This relay incorporates an isolated LED to illuminate a silicon photovoltaic stack which drives a....
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Twisted-pair wiring is a wiring technique that usually used for in-building data communication. Compared to conventional coaxial-cable, this technique offers...
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Description:The following circuit shows about GPS Receiver RF Block Diagram. This circuit based on the MAX2742 IC. Features: a complete GPS receiver, GPS ....
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Markus built a software AM radio transmitter using the Arduino. The audio signal is fed to the ADC input through a decoupling capacitor. A PWM output pin directly drives a capacitor inductor circuit with an antenna. The schematic and firmware are available...
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Even if simple the circuit, plirej` all condition, regarding the distortion and the response of frequency. The resistance of entry is 250K and the load that can drive is between 100R and 2K....
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Brian and I did spot and eliminate a little problem. I believe it was probably caused by me using an old version of CadSoft`s Eagle, and then (later) a newer version. Therefore I have checked the Eagle project files in the current version (6. 4), and re-made....
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There are many miniature FM transmitter bug circuits online, this one is unique in that it runs completely on solar power. No battery is required. As long as the sun is shining on the PV panel, the transmitter will transmit. The transmitter bug is useful as....
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The multiplication operation that is required to generate a signal of a frequency equal to the difference of the input frequencies, can be implemented in several ways. Actually a multiplied signal generally also appears when two signals are added and....
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A similar circuit can be used with an 8 ohm speaker but in that case you would put it in place of the emitter resistor. This circuit works as a carbon microphone replacement...
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This article presents a simple FCD circuit that can be built by anyone with moderate electronics assembly expertise. In addition, the article covers the reasons why an FCD is needed, why this FCD is superior to other FCD designs, and the theory of operation.....
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This simple transmitter operates from a 9V battery as shown above. I personally built this for a purpose. This is how it happened:- "members of my singing group find it difficult to handle a FM mic in Church. The choir sings in acapella form and the....
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Hi, I`ve been looking to add a simple 3 band parametric EQ to a tube bass preamp. My initial idea of making a simple OpAmp based EQ isn`t going to fly ....
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The quartz clocks which have dominated time-keeping for the past 20 years or so have one problem: their errors, although slight, are cumulative. After run....
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Analog meter normally doesn`t have high impedance since they don`t have buffer circuit inside. With active buffering, the input impedance of this circuit....
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The LMP91200 is a configurable sensor AFE instead of manage indoors low power analytical sensing applications. The LMP91200 is designed for 2-electrode sensors. This device provides all of the functionality looked-for to detect changes based on a delta....
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The schematic diagram of 100 watt audio amplifier with MOSFET. The huge collection of electronic circuit diagrams are provided here 100W RMS Amplifier · 0-30V Stabilized Variable Power Supply with Current Control..
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Fortunately, Dodd`s 1909 receiver has survived. It was found among the many parts that were in various boxes that I had purchased at the yard sale. The pieces were identified from the 1909 Station photo. Many of the 1909 Station parts were used in the....
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Frequency meter can be used in speed sensor, tachometer, or any measurement of repetitive signals. This frequency to voltage converter (FVC) can be used to turn...
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A simple circuit for sequentially flashing Christmas light strings or other similar low-power lamps. The socket symbols may be single bulbs or sockets for lamp strings. The load must be capable of operating from DC since the SCRs rectify the line voltage.....
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A very simple encoder circuit for a dc motor can be constructed using this circuit diagram. As you can see in the circuit diagram, the system shown consists of the HA-2542, a small 12-Vdc motor, and a position encoder. During operation, the encoder causes a....
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The driver files are located in the Si570AVR-USB-Driver folder inside the zip. Extract them into a new directory, and connect the RX board`s USB cable to a USB port. When prompted for the driver location, navigate to the extracted files and let windows....
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Fluorescent Tube Light Circuit of an inverter that uses a single transistor and a single transformer. This type inverter can be made in various....
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The nitrogen (N2) laser produces intense extremely short (a few ns) intense (100 kW typical) pulses of light in the near UV portion of the E/M spectrum (337. 1 nm being the dominent line). Despite this impressive capability, the N2 laser is among the easiest....
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THE FM3954 monolithic-dual gives us an ideal low-offset and acts as low-drift buffer function for the LM101A op amp. Track over it`s bias current range thus....
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Voltage-controlled oscillator (VCO) is an oscillator that its frequency is controlled using a voltage signal. The VCO described here provide both triangular and square wave output. The control voltage can be varied between 5 mV to 5 V, to produce oscillation....
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The circuit in this figure is protecting the circuit and the system with power supplies that may exceed safe limits. One example is small consumer products that use external ac adapters; its easy to mistakenly plug in the wrong adapter. Another example is a....
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Because of their speed, accuracy, effectiveness, and cost, infrared (IR) digital thermometers have replaced traditional mercury thermometers. Using a thermopile sensor, an ear digital thermometer measures the infrared heat of the eardrum, which reflects the....
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The choke coil parameters we are going to measure in this 3-voltmeter method are - the inductance, resistance as all choke coils have inherent resistance in addition to their inductance. We also measure the quality factor and power absorbed by the given....
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The Circuit diagram is ideal for accurate control of DC motors. DC voltage conversion to a series of pulses, such that the duration of the pulse ....
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There are many low power SSB rigs and kits don`t have any real speech processor circuitry, although there is a built in speech processor in most modern HF..
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Frequency-to-voltage converters form part of a wide variety of instrumentation circuits. They also find use in radio as FM demodulators. One interesting configuration for this application is the Diode Charge Pump circuit (DCP), which also doubles as an AM....
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This circuit lets an external 12V SLA battery power a camcorder which normally has an inbuilt 7. 2V battery. Such batteries can now be very difficult or expensive to obtain for earlier model camcorders. In essence, the circuit is a standard LM317 adjustable....
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This circuit is a Delayed Pulse Generator that is used to provide pulse rate and independent control of initial delay. The pulse generator of this circuit is...
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This reference design demonstrates the MAX98400 Class D audio amplifier in a stereo audio docking station application. The demo box is a powered speaker dock that drives a speaker system consisting of 2in satellite speakers and a 5in subwoofer....
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If you look into the bottom of a valve you will see the wires from each electrode and you can see the valve base pins to which they are connected. For this reason I will not give any valve data or pin-outs. These are widely available from other sources and....
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NOPPP is a simple programmer for PIC16C84, PIC16F83, and PIC16F84(A) microcontrollers. It attaches to the parallel port of a PC. Plans were published in El....
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Geotron, I`ve fried a few mots myself. What kind of bridge do you have leaving it? When I had just a 1kv bridge made from four 6a100`s, I had problems ....