Popular Circuits Page 259
- Page 259
-
The operation of the converter is based on the weighted adding and transferring of the analogue input levels and the digital output levels. It consists of comparators and resistors. In theory, the number of bits is unlimited, but each bit needs a comparator....
-
-
A Light Dependent Resistor (aka LDR, photoconductor, photoresistor, or photocell) is a component used commonly in electronics which has a resistance which decreases as the intensity of the light hitting its surface increases and visa versa. A typical light....
-
This high-voltage power supply has an inverter around Q1 that supplies 150-V pulses to the converter of SCR1 and C2. The output of ?2 is a 4.5-kV pulse that is multiplied by the voltage-tripler network (right) to produce 13.5 kV.
..
-
A scoreboard in the middle of the room, that one will control from backstage. The scoreboard will have two 3-digit numbers, controlled individually. Whenever the score changes, a little irritating sound should. sound. What is the easiest, more efficient and....
-
By combining a current-reuse amplifier and switch based mixer, a dual-band receiver front end offers excellent performance with extremely low power consumption....
-
The LM1036 is a DC controlled tone (bass/treble), volume and balance circuit for stereo applications in car radio, TV and audio systems. An additional control input allows loudness compensation to be simply effected. Four control inputs provide control of....
-
-
This was my first AS Electronics project which I built way back in 1998! The original report, with diagrams, is shown here and a PDF version of the report is available for download. There are many occasions where I need to be able to measure small audio....
-
Amplifier circuit of this paper is to introduce a floating power supply, the purpose is to increase the output power, the amplifier output power with only the final stage ampli..
-
When you need to quickly connect a negative power supply under logic control, the negative power-side switch in Figure 1 can help. Although originally intended for driving the gates of high-current MOSFETs, the MIC4451 can assume a different role. It....
-
Want to make a set of attention-getting LED running lights? This article provides a circuit diagram and discussion of the CMOS logic and IC layout for a simple sequential LED flasher or light chaser that one can build, including the parts lists. The heart of....
-
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,....
-
-
Interfacing the LM335A temperature sensor to A/D converters, measuring temperature with LM35 LM335A sensor and the 9S12 HCS12 MCU, calibrated and uncalibrated temperature errors of IC temperature sensors....
-
Based CNC programming gain instrumentation amplifier PGA202/203 circuit diagram as follows: ..
-
One of the difficulties in the design of higher-order tunable bandpass filters is achieving correct tracking of the..
-
Disclaimer All files are found using legitimate search engine techniques. This site does not and will not condone hacking into sites to create the links it list. We will and do assume that all links found on the search engines we use are obtained in a legal....
-
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....
-
Circuit as shown, consists of four light-controlled electronic switches, timing circuits, voice circuits, and audio circuits and other components. Congratulations for a birthda..
-
The turn-on and turn-off characteristics of two complementary transistors can be combined to attain nonselective frequency tripling. The resulting circuit handles any periodic waveform with nonvertical sides. Each input signal peak produces three output....
-
Electronics Tutorial about the RC Oscillator Circuit, RC Phase Shift Oscillators and how a Tuned RC Oscillator Circuit produces sine waves....
-
A modified B/W TV flyback transformer is used in this circuit with a voltage multiplier to produce 9- to 14-kV negative voltage. This is connected to a discharge needle to produce negative ions. ..
-
Automatic water tank as shown in the circuit diagram. IC is PSSR AC solid state relay, which is developed in the SSR on the basis of a new type of solid-state relays AC non-con..
-
The A/B Switch circuit consists of three ICs and a handful of resistors. Two gates from a 4011 quad 2-input N..
-
This is a circuit for alternative sources selection. It combines mechanical selection using a rotating switch S1, the electronic drive of the relays RL 1-10 and also the optical indication of the selection by the Display DSP1....
-
-
Reference design for an automotive antenna features an AM/FM low-noise amplifier (LNA) for active antenna modules. Article details the capabilities, features, and ease of design with an AM/FM active antenna LNA....
-
The divider design is pretty self-explanatory. One can choose between division by 1, 10 or 100 or no output (tied low) using the CONTROL input connected to the analog multiplexer HC4052. AC04are used to drive 3 indication LEDs as well as to buffer the....
-
To obtain a 1000:1 Sweep Range, the voltage across external resistors Ra and Rb must decrease to nearly zero. This requires that the highest voltage on control pin 8 exceed the voltage at the top of Ra and Rb by a few hundred millivolts. The circuit achieves....
-
I`ve designed IFA antenna in Altium as described in DN007 and created a balun circuit from the schematic design of CC2500EM Reference Design (swrr016a). I`m very new to RF designs, as I could understand from application notes and forum posts; this design....
-
Are you not familiar with the basics of electronics We have just opened an online store where 4 very good books on basic electronics have been kept for sale. You can read the reviews of these books and buy them as you wish. These books are being followed by....
-
This is an Infrared beam breaking alarm ideal to use in entry or passages.It is based on the working of the popular IR sensor Module TSOP 1738 which sense....
-
-
An FM regenereative receiver using a single FET and one audio amplifier IC...
-
Coop automatic controller described in this case, capable of sheds light, temperature and humidity automatically adjusted to increase egg production rate and survival rate of c..
-
The GX4201 is a wideband 1x1 video crosspoint implemented
in bipolar monolithic technology. The device is characterized
by excellent differential gain and phase in the enabled
state, and very high off-isolation in the disabled state. The
fully buffered....
-
Because of energy crisis Load shedding may be a common problem in several countries. Sudden power fluctuations, surge and high voltage may spoil sophisticated household appliances like TV, VCR, VCP and music system. This circuit provides protection against....
-
I liked the idea of distributed active RIAA correction and also the concept of using negative feedback to linearize the input stage. Now, the original Collin design has a few significant flaws (openly admitted by the author in the same article), one of them....
-
Here is the schematic, PC board pattern, and parts placement for a low powered FM transmitter. The range of the transmitter when running at 9V is about 300 feet. Running it from 12V increases the range to about 400 feet. This transmitter should not be used....
-
-
Field scanning circuit circuit and sawtooth waveforms Sawtooth signal generating circuit color television field scan is an indispensable circuit shown in Figure 1 is a Toshiba ..
-
ISP Programmer Please buy USB programming cables at last and start using AVR Studio, avrdude etc. The source code is now abandonware and it will stay on Sourceforge for ages. This software supports programming of Atmel microcontrollers 89Sxx (`51), ATtiny,....
-
It is a very useful thing , to have a small headphone amplifier , capable of driving a couple of pairs phones. Fortunately, the headphone amp has a much easier job to do, in that neither the output power requirements nor the load characteristics are so....
-
This article is of interest only to readers whose bicycle lights are powered by a dynamo. The laws on bicycle lights in the United Kingdom are stricter than in most other countries and a dynamo is, therefore, a rarity in the UK. For safety`s sake, it is....
-
-
-
The sensor is based on the selective absorption of hydrocarbons by an n-type metal-oxide surface. The heater in the device serves to burn off the hydrocarbons once smoke or gas is no longer present in the immediate area; hence, the device is reuseable.....
-
DC motor E inversion control circuit, the circuit loop L li KDL -. 80 (primer using a single set of normally open/normally record relay contacts when A.B two low, the relay KI,..
-
As shown in FIG photoelectron pulse missing detection circuit. The detector consists of optoelectronics slotted switch H13B1, dual time base circuit 556 with some RC components..
-
To power it up you need a clean stable source of 5 volts DC. This means that you either pick up a switching 5v DC power supply from our favorite JK Electronics, mail order one from Jameco or you will have to wire up a voltage regulator. Page 254 of Phys Comp....
-
The following circuit shows about Car Door Keypad Electronic Circuit Diagram. Features: lower pin-count lower cost device, uses an MC68HC908AZ60A, ....
-
Use this cell phone charger circuit and a 1.5V battery when you do not have main power and need to charge your phone ..
-
-
-
Integrated circuit gates ICl-a and TCl-b form a monostable, whose time constant is determined by C2 and R3. When the transmitter is dekeyed (and then almost immediately rekeyed) point TX+ goes low and takes pin 1 low for a short time. This triggers the....
-
Using four diode in an array allows using only one MOSPOWER transistor for analog switching. The current flow is controlled by keeping the source-base connection of the MOSFET towards the load. Be sure to use diodes capable of handling the load current....
-
It`s a very useful circuit which when installed on your car gives the voltage of you car battery in a LED dot display form. The meter circuit is based on four comparators made of quad op amp LM324. The inverting inputs of IC are kept at at reference voltages....
-
A 52 MHz third overtone crystal is typically 30 ohms at its series resonance according to manufacturer specifications. The crystals used for the prototypes have nearly ten times lower series resistance but they were very expensive. An oscillator can be seen....
-
Intelligently modifying the motor-drive commands to a robot can give you control finesse during competitions. Moving a joystick hard right, for example, might have different effects, depending on the robot`s speed and direction. Software running on an....
-
Sorry, I don`t have any data/instructions for use on this schematic. If anyone knows how this circuit works or is used, please drop me an email at click here or use the feedback form...
-
I made circuit diagram in Kicad (In my opinion the best freeware software for drawing electronic diagrams and printed circuits boards). For printing....
-
-
The telephone-line tester consists of nothing more than a meter (that`s used to measure line voltage in the on- and off-hook state), three resistors (one of which is variable), a pushbutton switch, and a modular telephone connector...
-
This circuit uses KA2184 infrared receiver ASIC production infrared remote control dimmer light circuit as shown, wherein the infrared emission from the driving pulse generator NE555 components...
-
This report entails the details on the principles and operation of an amplifier known as the Wien Bridge Oscillator. This oscillator was designed as part of a laboratory exercise, which unfortunately I did not get to participate in, therefore, this write....
-
This electronic door buzzer circuit schematic has a very simple function and is very easy to build. This door buzzer circuit use a LF351 operational amplifier and other few common electronic components. When the S1 push-button is depressed an initial....
-
A sensor turns on Ql to activate the low-frequency 555 oscillator, which pulses LAMP II. Sensor may be sensitive to changes in light or temperature. Either RA or RB can be sensors, as desired. A decrease in RB or an increase in RA will cause the NE555 to....
-
As with your square wave, you will interfere with people`s radios, & they will become quite upset, plus you may attract the attention of the licencing authority-& believe me, you don`t want that! you need I believe a colpits oscilator, this will have a "tank....
-
Another setback law sound and light control delay walkway stairs light switch circuit. VDl - VI) 1, off + VT5 constitute Ji - Ji Guan road called Route VTl- VT4 control with ot..
-
Simulation of behavioral DSP designs along with analog/RF circuit designs is critical to the success of the integrated components, devices, and subsystems used in today`s wireless applications. The need to verify the impact of real-world analog/RF issues on....
-
Tweet Hey guys, I have a question about electronics. One project ive been intending to do is something simple: make a circuit which makes an LED flash ....
-
Darmowe domeny oraz hosting z miejscem do 1GB powierzchni dyskowej, nie limitowany transfer oraz dostep do PHP jak i 5 baz MySQL. Maksymalna wielko?? pojedy?czego pliku bez ogranicze?!....
-
The following circuit shows about Robotics IR Navigation Sensor Circuit Diagram. Features: one chip 74HC04, IR sensor will work in direct sun ....
-
-
Tetsuo Kogawa`s circuit is pretty well documented, but not in conventional schematic form. I decided to enter it into LTSpice to see what it could make of it, and decided to go ahead and put the schematic online here, with perhaps a few comments: I`ve set....
-
Automatic irrigation control circuit can automatically crop irrigation according to the size of soil moisture. It can be widely used in state farms, orchards, Schomburg materia..
-
-
This is a one tube (6J5) plus diode (1N34) circuit that converts any 8 Mc of the new FM band to the old FM band. It is assembled on a U-shaped piece of aluminum and mounted inside the radio set. I built one using old parts and carefully followed the....
-
Im working to build the CountryHick DI as shown on DIYFactory, with a couple of minor modifications. Eventually, This is going to be a 1u unit with 4....
-
A basic digital voltmeter circuit using the Harris Semiconductor ICL7107 is shown. It has a 2-V range. Calibration consists of applying a known voltage of 1.2 V to the input and adjusting R3 for a correct reading on the display. Supply is ±5 V, and S1....
-
The MAXQ3210 ia a powerful RISC microcontroller. This device have features and capabilities to make it compatible for battery-powered applications that detect....
-
The analog display consists of a frequency/voltage converter (IC12) and bar-graph segment drivers IC10 and IC11. R34 is the calibration adjustment and is set so that an engine rpm of 5000 to 7000 rpm lights the first LED (redline value). ..
-
-
It looks as if they are highly prone to harmonics meaning in this case, that if the resonator is 455KHz, it will also allow 910Hz and 1820KHz and 3. 640MHz which seems to be dominant and on up. But the frequency around 3MHz seems to be prevalent and one or....
-
This circuit project automatically turns on a night lamp when bedroom light is switched off. The lamp remains ON until the light sensor senses daylight in....
-
A dimmer for individual LED bulbs. LEDs (light emitting diodes) are very sensitive components - exceed their rated current or voltage and their lifespan can be slashed from 50, 000+ hours to an eventful microsecond. LEDs are current-driven * which means that....
-
This project was begun as a means to charge and cycle NiCad batteries but has become a versatile tool for experiments requiring either a controlled voltage up to +30V and/or a current of +/- 2.5 Amps. If all you want to do is charge and recycle NiCad....
-
-
This article by Arthur C. Miller was issued on page 88 to 90 in the book "Radio For The Millions" (prepared in 1945 by Popular Science Monthly staff, but first published in "Popular Scienece Monthly" April 1940). Fans who would like to install a radio on....
-
It provides a means of temporarily silencing a battery-powered smoke detector after you`ve burnt the toast, scorched the baked beans or whatever! Unlike the earlier design, this more sophisticated version does not cause strange chirps and whistles to emanate....
-
The following circuit shows about LM1800 IC Integrated FM Stereo Demodulator Circuit. Features:excellent sound quality, high quality FM stereo, ....
-
Nothing in this project is real original, but I did do a couple of modifications from the circuits I saw. The fellow that started this, as far as I can tell is Jack Bryant, KE4ID with his one tube superhet contest radio project. That was my basis for this....
-
LS-2 remote control switch infrared sensor module is basically the same with the LS-18, in addition, it isused as a reflector. LS-2 Pin diagram form LS-2 internal block diagram Electrical parameters LS-2 remote control switch module operating voltage is 4 ~....
-
At some point every ham working with FM radios has need to do some tuning of the transmitter and receiver. If you are like me and lucky enough to have professional test equipment, this task is easy. If you don`t have access to professional equipment, you....
-
This is a fun and useful circuit for demonstrating high frequency high voltge. It can produce up to about 30KV, depending on the transformer used. It is cheap and easy to make, thanks to the standard TV flyback transformer used. It can power LASERS (although....
-
-
The following circuit shows about Complete Solid state M-9 Power Amplifier Circuit Diagram. Features: DC servo make a loudspeaker protect circuit, ....
-
The following circuit shows about Set Timing Calculator Circuit. This Circuit based on the LM555IC. Features: provide a delay of approximately ....
-
This is a very sensitive 50Mc converter allowing you to receive the entire "Magic Band" (50Mc...52Mc) on your general coverage receiver (28Mc...30Mc). It receives all types of modulated transmissions. It all depends on the receiver used. I`ve tested this....
-
I know the general rule of world that reading makes man ready, writing makes man everyday but practice makes man perfect. Only theoretical knowledge is not enough for an E. C (Electronics and communication engineering)student. A project is one of the....
-
This is a deeper look into the Port-O-Rotary phone. We stuck the GM862 cellular module into an old rotary phone enclosure, and voila, it was an instant, ridiculous, hit. Really simple - the GM862 requires 3. 8V and a Lithium Polymer outputs 3. 7-4V. No....
-
LH0024 IC small signal IC designed for general purpose switching and amplification due to its low voltage, low voltage and three different win the election 1N4148 silicon small signal diode planar epitaxial used for fast switching applications with a reverse....