Popular Circuits Page 164
- Page 164
-
This is a remote control Circuit that uses radio frequency electrical signal to control a variety of applications. Component: Transistor, ....
-
-
-
It was designed for use on a "The London Model Railroad Group`s" large O scale layout located at London, Ontario, Canada. The prime requirements for the club throttles were that they be rugged, reliable and produce as little heat as possible. Throttles of....
-
SCC3 12 Volt 20 Amp Solar Charge Controller. A kit with the circuit board and parts for this circuit is available from CirKits. SCC3 - 12 Volt 20 Amp Solar Charge Controller (C) G. Forrest Cook June...
-
-
Related components PDF download: ICL7106CD4036 The LCD electronic thermometer The LCD electronic thermometer circuit is as shown. The temperature sensor KTY10 has good linear relationship between temperature - resistance, and you can connect point A and....
-
-
Ic, spread the use of electric comparator LM339c1 / 4), the potentiometer B to set the desired degree of construction, built-degree feedback signal by R., white A strong piece pressure point achieved, assuming a nephew increase the load speed r leaving..
-
-
This is probably the simplest idea to generate flashing light from an LED using AC. The circuit is relatively the simple way of flashing one or more LEDs from a high voltage DC obtained from Mains. This can be used as a Mains indicator or Mock flasher. The....
-
Solar charge controller is an electronic device which is used in solar system installation to control the amount of charge going towards the battery from solar panel. Charge Controller are available in different types and ratings. The term "charge....
-
This circuit is also use operational amplifier IC LM324 to drive the VN64GA with the error signal and to control output voltage. This output voltage is pulsating DC, which is quite satisfactory for battery charging. This circuit also can be converted to the....
-
-
The input and output data streams of the I and Q data channels are shown in Pi/4DQPSK System: fc=990 MHz, Data rate = 48. 6 kbits/sec. Note the delay between the input and output data signals. This delay is due to the filters in the modulator and....
-
This stero amp will give you 4-8W/ch of zero feedback triode power for less than a pair of Chinese 300B's ...if you know where to shop. For those of you who are unfamiliar with this lil' tube here's the poop: The 5687 is a 9-pin miniature twin triode (a la....
-
Construction of a 1-Wire Barometer. This page shows the circuit, and gives construction and calibration details. This barometer connects to a Dallas Semiconductor 1-Wire network...
-
LED will turn on when PIO goes low - acting like GND - and current will be taken from power supply not from PIO like first method. So do I must take care of maximum current of PIO although it just act like GND not like a power supply -like method 1 -. when I....
-
A simple doorbell circuit diagram and schematic designed using UM 66 IC, which is a music sound generator. This is an easy to make electronic doorbell circuit....
-
This article presents practical techniques for incorporating "correctness by design" in DDR2 interfaces, from a Signal Integrity (SI) perspective, using the current generation of available design tools. Some common DDR2 design errors are analyzed, as well as....
-
-
This is cable TV amplifier using 2 transistors. This amplifier circuit is for cable TV systems using Ohm coaxial cables and works fine up to 150MHz. Transistor T1 performs of amplification. Up to 20dB gain expected from the circuit. T2 is wired as an emitter....
-
-
The report gives the reader info related to light sensor, light photoresistor, comparator, and circuit. There are lots of information regarding detection....
-
The load described here is capable of handling up to 10 watts of RF power for a couple of minutes, and is designed for the widely used 50 ohms impedance. It consists of ten parallel connected 560 ohms 1 watt resistors, R1 through R10, a voltage divider,....
-
CIC2851E refrigerator closed circuit principle reminders The circuit consists of step-down regulator rectifier circuit, the delay circuit, music IC CIC2851E, speakers and other..
-
-
This simple tone control circuit is designed based on the famous Baxendall tone control circuitry. The circuit given here can give a maximum cut or boost of around 12 dB at 10 KHz (treble) and 50Hz (bass). Also, both bass and treble can be independently....
-
This circuit ensures that you will never again forget to switch on the lights of your car. As soon as the engine is running, the dipped beams and the sidelights are automatically switched on. The circuit also causes the dipped beams to be extinguished as....
-
By the transistor VTi, VT3 and VTs and RC components constitute three separate multi-resonator oscillator. Oscillation frequency levels dependent on the value Ri, R3, Rs and Cl..
-
In this circuit, the input from IC2 optocoupler is fed to the comparator input of the AD..
-
Alright, so I had some post-publication weirdness following my last post, and it took me a few days to figure out exactly what was up, but I think I finally have all the details, and I learned a lot in the process. I noticed some weirdness towards the end of....
-
-
In this small switching power supply, a Schmitt trigger oscillator is used to drive a switching transistor that supplies current to a small inductor. Energy is stored in the inductor while the transistor is on, and released into the load circuit when the....
-
This is a very basic circuit for flashing one or more LEDS and also to alternately flash one or more LEDs. It uses a 555 timer setup as an astable multivibrator with a variable frequency. With the preset at its max. the flashing rate of the LED is about 1/2....
-
This detector circuit is sensitive to low frequency electromagnetic radiation and will detect for example hidden wiring or the field that encompasses a transformer. Pickup is by a radial type inductor, used as a probe which responds well to low frequency....
-
This circuit is used to connect the camera with very log wire. This is actually a video amplifiers. This circuit consist of two part, they are sender part and....
-
The Max650 switching regulator produces a regulated 5 V from large negative voltages, such as the -48 V found on telephone lines. The resulting power supply operates with several external components, including a transformer, and it delivers 250 mA. The....
-
The circuit presented here illustrates the fact that in spite of all kinds of new component and technology, it is still possible to design useful, and interesting, circuits. The circuit is based on two well-established transistors, a Type BF256C and a BF494.....
-
The following circuit shows about Single Supply Phase Locked Loop Circuit Diagram. This circuit based on the LM331 IC. Features: the response of ....
-
100 W output at 50 MHz is available from this circuit. Ul and Q2 form a T-R relay driver, switching the amplifie..
-
Using the simple circuit in Figure 1, you can control the light intensity in your room or work area from your PC. The heart of the circuit is a low-power D/A converter that converts digital words from a computer's parallel port to analog-voltage signals. To....
-
One leg of the photocell (Rl) is tied to the +15 volt supply and the other end is connected to ground through resistor R2, forming a voltage-divider network. The non-inverting input of the 741 op amp, IC1, is tied to the junction formed by Rl and R2, while....
-
-
The idea for the project started nearly two years ago, while I was researching the purchase of a new lighting board for a small theatre where I was working at the time. While our old board was nearly twenty years old, and desperately in need of a....
-
12W Amplifier Circuit Using 741 Op Amp A 12 watt audio amplifier operating on a dual symmetrical supply of ± 12 volts. The 741 provides the....
-
In the figure is the bilateral band modem circuit composed of NE561B. The loading frequency of the input modulating signal is f0=1MHz. When the AM modulation signal is added on the input terminal of the multiplier, it is also added on the phase detection....
-
Liquid-crystal displays come in all sorts and sizes, and this applies also to their pinouts. In fact, many of these displays cannot be used properly without the manufacturers` documentation. But, of course, this can never be found when it is needed, and a....
-
This is circuit MOSFET power amplifier OCL, Output 100w , use mosfet k134+j49 or Mosfet J162 + K1058, Output 112W at Speaker 8 OHM. Power Supply +56V/-56V 4A....
-
-
Circuit diagram used CA3140 op amp and diode array, produces a low distortion sine wave. Table shows the values of R and C, access to frequencies from 50Hz to 30kHz. Zener diod..
-
The three best known of these signals are the DCF77 signal broadcast from Mainflingen near Frankfurt in Germany on 77.5kHz which can be received through out most of central and northern europe. The MSF signal broadcast from outside Rugby in England by the....
-
The MS6714 is a 4 stereo inputs/2-channel outputs digital control Audio Processor for the low voltage operation. Volume, Tone (bass and treble), and balance (left/right) processor are incorporated into a single chip. The MS6714 also has the loudness function....
-
As Figure: when the operation of the circuit as long as the timing of the reset pulse to the CD4060, we can guarantee the state ended in Q1, so that the NMOS transistor control..
-
Driving the highway with your high-beam headlights can really increase your visibility, but can be a blinding hazard for other drivers. This simple circuit can be wired into your headlight switch to provide automatic switching between high and low beam....
-
Unfortunatately this only provides 1. 8v signals and still needs a converter to interface to the 3. 3v signals most raw LCD use. The main components is the TFP101A. I got mine as a free sample from TI. Also visible in this picture is the fact that only the....
-
This circuit is useful to amplify and distribute video signals with low noise and without losses. The CA3100 is a fast opamp designed to amplify video signals. Set the P1 to control the input signal level to have a clear picture on the TV set...
-
To apperceive whether it is freezing you alone charge to admeasurement the temperature. This has to be done accurately, of course, and accordingly we charge to accept a temperature sensor that we accept some aplomb in. The best has afresh been fabricated for....
-
A very simple DIY crystal oscillator circuit which use a quartz for frequency stability and a good rf transistor. Use a 2-nd or 3-rd harmonic crystal, for....
-
A modification to David Knight`s linear detector circuit. I wanted to build a "hi-fidelity" AM receiver and needed an ultra-linear AM detector for it. Here is the circuit I came up with: Note that I eliminated the meter circuit, and removed a lot of the....
-
-
FKL-32 type automatic thyristor excitation device suitable for terminal voltage of 400V, capacity sookW and below synchronous generator used for automatic adjustment of excitat..
-
-
-
This astable will trigger itself and run free as a multivibrator. The external capacitor charges through RA and RB and discharges through R8 only. Thus, the duty cycle is set by the ratio of these two resistors, and the capacitor charges and discharges....
-
At some stage, we will all find ourselves pushing hi-fi equipment just a little too hard, and if lucky, will just find that the sound has become "dirty". If this happens too often or is too severe, tweeters are the first to go - they are damaged by 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....
-
Circuit oscillates because the transistor shifts the phase of the signal 180° from the base to the collector. Each of the RC networks in the circuit is designed to shift the phase 60° at the frequency of oscillation for a total of 180°..
-
-
This is infrared (IR) proximity detector circuit. A matched infrared emitter and detector pair is used in this circuit. The voltage controlled oscillator....
-
This circuit was designed on request to drive a Light-cluster formed by several LEDs that can be mounted in the vehicle as a tail and brake light. When SW1 is on, the cluster will illuminate at medium brightness. When brakes are operated, SW2 will be closed....
-
The heart of the motion detector movement detection circuit is motion detection chip IC1 (KC778B). The signal frequency from PIR sensor is low (0.1Hz ~ 10Hz) while the band is very wide, the chip will optimize it. The working voltage of KC778B is 4V ~ 15V,....
-
-
The amp is built according to the Morgan Jones design. In the spirit of DIY, I made a few modifications. I did not change the circuit topology at all, but used Svetlana 6N1P tubes, as noted. I also used a conventional power supply instead of the wall....
-
This circuit will generate a square wave of 2 Hz to 20 kHz. The circuit uses an op amp in a relaxation-oscil..
-
The circuit consists of a variable current source that charges a capacitor, which is rapidly discharged by a Schmitt-trigger comparator. The sawtooth waveform thus produced is fed to another comparator, one with a variable switching level. The output from....
-
Make an electronic focuser to help with the astro-photography. The electronic focuser project allows accurate focussing under computer control. This is most useful for eyepiece projection astro-photography where I found that touching the focuser was enough....
-
WxVoice is an automated voice-back system that uses your PC`s voice modem to speak the current and past weather conditions over the telephone. WxVoice takes advantage of Text-to-Speech (TTS) technology to produce a more natural sounding dialogue than other....
-
Although our kit utilizes an off-the-shelf microcontroller (AtMega328P-PU based Arduino), we additionally designed a simplified version. This allows other collaborators and students to potentially replicate, or modify the project and eventually fabricate....
-
This line driver can drive low-impedance lines with up to 70 V p-p max. IC1 is a low-noise op amp suitable for 15-V operation. T1 and T2 are regulators for the power supply for IC1. T3 and T4 form a complementary power output stage...
-
-
-
FIG. A ~ c circuit has a high coefficient of voltage. If the regulator resistance rz is constant, while maintaining the delicate balance of the bridge situation has infinite vo..
-
Colour TV Camera Tutorial - Block Diagrams - Electronics Circuit and Tutorials - Hobby Science Projects - Modulation enables low frequency audio signals to be radiated long distances. This is done by superimposing the low frequency audio signal on the high....
-
The goal of this project was to explore how objects, places, and people can be linked wirelessly. We began discussing how we might approach this task. Will this be for private or public use How many people will be interacting with the project Will we use....
-
Here is an efficient 4-stage stabilised power supply unit for testing electronic circuits. It provides well regulated and stabilised output, which is essential for most electronic circuits to give proper results. The circuit provides an audio-visual....
-
-
Transmitter (FZ) winding and a receiver (sz) correspond to the three-phase windings connected, 110V AC voltage supplied to the transmission..
-
Here the simple audio mic pre amplifier circuit based on single IC LM358. The circuit is very simple, inexpensive and easy to built. Component Parts List: R1, R3, R4 = 10K R2 = 1K R5 = 100K-1M Potensiometer C1 = 0. 1uF C2 = 4. 7uF/16V IC1 = LM358 dual op-amp....
-
This page presents an alternate option to directly control your mount`s stepper motor board. There is not much difference in terms of stepper control functionality from the original modification as they both allow commands to be sent from the PC directly to....
-
The integrated output amplifier described in this article consists of little more than one integrated circuit. It is intended especially for use in motor vehicles and other battery-operated applications. Although it appears simple and hardly worth looking....
-
Constituting simple LM3915 audio power meter circuit diagram Note: If the internal resistance of 4 speaker when, Rx take 10k If the internal resistance 8 speaker when, Rx take ..
-
By using a potentiometer, R2, as one of the resistors you can dial up the output voltage wanted. Either AC or DC input can be supplied to the Kit via a socket or terminal block. When external capacitors are used with any IC regulator it is good practice to....
-
Have you ever in the dark watching time from the mobile phone In this case the bright and dark backlit strong contrast will make the eyes uncomfortable, which requires the use of "ICON" model "that is in standby mode with a slight current time,..
-
The red connector is for an optional external antenna wire and the black connector is for a ground wire. The red is wired to secondary winding and the black is connected to the circuit ground plane. Additionally two by-pass capacitors (100n) are soldered....
-
At half brightness, the lamp current is pulsed on and off (Fig. 50-12b) by the voltage developed across the resistor and capacitor at the current-sense output. Lamp current is sensed by the current-sense output. A simple pulse-width modulation....
-
-
This is design for a frequency meter based on AVR microcontrollers. Maximum input frequency is specified to be 30 MHz in the multi-chip configuration, and in single-chip configuration, there are both 5 MHz and 10 Mhz versions operating with 10 and 20 MHz....
-
This could be the circuit diagram of a easy electronic combination lock by using IC LS 7220. This circuit may be applied to activate a relay for controlling (on & off) any device each time a preset combination of 4 digits are pressed. The circuit may be....
-
The LED circuit below is an example of using 25 white LEDs in series connected to the 120VAC line. It can be modified for more or less LEDs by adjusting the resistor value. The exact resistance will depend on the particular LEDs used. But working out the....
-
5V to 2.5V voltage regulator circuit It shows 5v to 2.5V regulator circuit computer motherboard. Seen from the ring, this circuit is a power management chip RT9202 as the core ..
-
Audio function generator integrated circuit ICL8038 composition can produce a square wave, triangle wave and sine wave, as shown in Figure 11-8. Electrical resistance and poten..