Top Circuits Page 102
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The following circuit shows about Stepper motor controller. This circuit based on the PIC16F84A IC. Features: transistor is used to drive the ...
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This is a typical stereo application circuit schematic of the ADAU1592, a 2-channel, bridge-tied load (BTL) switching audio power amplifier. You can apply ADAU1592 on flat panel televisions, pc audio system and/or mini-components applications..
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A high quality stereo FM transmitter circuit is shown here. The circuit is based on the IC BA1404 from ROHM Semiconductors. BA1404 is a monolithic FM stereo modulator that has built in stereo modulator, FM modulator, RF amplifier circuitries. The FM....
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The LM4610 uses DC? signal to control the tone (bass/treble), volume, and balance circuit.?? The advantages of using DC control is that you can use a mono...
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The circuit is simple, yet is capable of excellent performance. I designed it specifically for use as an amplifier for the digital sound card in my computer. Audio input can be from any two-channel line level device such as a television, CD player, or VCR..
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Designing various electronic circuit system (synthesizer, modem, decoder, data converter, etc) of ten need a frequency modulator subsystem. An FM modulator is...
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This 9-minute timer switch can be used to control the light in a toilet or bathroom. The timer is started by pushing S1 and stopped by pushing S1 again. If you forget to turn it off, the controlled light will go off after nine minutes. If you need the light....
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This low-voltage high-current output, sWitching de power supply is running off the 220-Vac input. In this circuit, an ST2 diac relaxation oscillator, Q3, Cl, and the diac, initiates conduction of the output switching transistor Ql, the on-time of which is....
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We can use this circuit diagram to adjust the speed of a low-power induction motor, such as those which can be found in fan application. The function of...
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The schematic below appears typical stepper motor driver application with NJM3770A. As seen in the diagram, the single channel stepper motor drivers NJM3717 and NJM3770A are not synchronized..
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// TDA2004 Car Battery 12W Stereo Amplifier Circuit Its main features are : Low distortion. Low noise. High reliability of the chip and of the...
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TDA2005 car audio amplifier circuit diagram electronic project using few external electronic parts..
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TDA7000 is an IC for FM portable radios which has a Frequency-Locked-Loop system with an intermediate frequency of 70kHz. The TDA7000 has the following functions: RF input stage, mixer, local oscilator, IF demodulator, mute detector and mute switch. The....
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GENERAL DESCRIPTION The TDA7000 is a monolithic integrated circuit for mono FM portable radios or receivers where a minimum on peripheral components is important (small dimensions and low costs). The IC has an FLL (Frequency-Locked-Loop) system with an....
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TDA7262 stereo 20 watts audio amplifier circuit design electronic project..
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Car radio application using class AB Audio Power Amplifier usually has TDA7360 inside it. It is a22W bridge or stereo audio ampwith features such as minimum external components, high output power, fixed gain, clipping detector and etc. Above circuit diagram....
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High-end audio equipments are normally digitally controlled by a a microprocessor (microcontroller) system. It?s necessary to have? digital interface that...
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The following circuit shows about TL163 IC For Ultrasonic Remote Control Circuit Diagram. Features:detector, high-gain amplifier, low-frequency ...
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The schematic below showsTLE5206-2 5A H-Bridge for DC Motors Circuit Application. It such a device which has an integrated power H-bridge with DMOS output stages for driving DC-Motors, according to the datasheet. TLE5206-2 Circuit Application describes Input....
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The schematic diagram described here is a TMP01 Celsius Scale Temperature Sensor circuit. This circuit is used to convert the VPTAT output voltage that is ...
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Triode for alternating current,TRIAC, is an electronic component that can control power in two direction in an AC circuit. The figure (a) shows the block...
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If you send a DC voltage signal to carry the information for a long distance, then the signal will suffer attenuation with unpredictable characteristic introduced by the medium, for example the cable resistance that vary with temperature changes. If you....
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The electrical circuit diagram of this temperature control circuit consists 3-pin analog temperature sensor (LM35DZ), a built-in A/D converter microcontroller (PIC16F877), and the heater driver (IRL1004)..
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The circuit is temperature control by fan, this circuit can control temperature and it also indicates the temperature. All the above functions are monitored and...
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The temperature of a quartz crystal for oscillator should to be kept constant to operate at very stable frequency. This oven temperature controller is suitable...
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Temperature? measurement (sensing) and monitoring will be economical and straightforward if we apply the input of? TC9400 V/F converter with a voltage from...
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This temperature meter uses the precision micro power centigrade sensor IC LM35. The output voltage of the IC is linearly equal to 10Mv per degree centigr...
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This temperature controlled relay circuit is a simple yet highly accurate thermal control circuit which can be used in applications where automatic tempera...
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Above circuit shows Temperature to Digital Converter diagram using this LM35 sensor with a useful bypass capacitor from VIN to ground and a series RC damper..
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This is the Tesla Coil circuit diagram with the detailed explanation of its working principles. The electronic circuit simulator helps you to design the Tesla Coil circuit and to simulate it online for better understanding..
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This is the figure of4Q2 DC Motor Speed Controller Circuit Block Diagramwhich is designed for full control of conventional shunt wound and permanent magnet motors up to 75kW capacity, according to the datasheet. This type ofDC motor speed controlleris....
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This schematic below was built using a 2-layer evaluation board for the AD9662 3-Channel Laser Diode Driver,this device are used mainly for high performance CD-DVD recordable drives and laser diode current switching..
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The 555 Timer IC worked in three operating modes: monostable, astable and bistable/scmitt trigger. Here we will provide you with article of its astable mode...
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The below diagram shows H-Bridge with 4 inputs and external power supply, the control application must allow the motor to be operated in forward and reverse directions..
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The schematic below showsthe ICL7135 integrating analog to digital converter (ADC) functional diagram. According to the datasheet, an integrating converter is the right choice for panel meters and digital voltmeter applications. It also can be used for....
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In the datasheet, you will see the L200 application circuits diagrams such as Programmable Voltage Regulator, High Current Voltage Regulator with Short Circuit Protection, Digitally Selected Regulator with Inhibit, Programmable Voltage and Current Regulator....
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and Flash Memory schematic that can be done from the following sources: power-on reset, external reset, software reset, watchdog timer reset, and brownout reset. The figure (click to enlarge) shows a recommended external reset circuit for the MSC1210 with....
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sections you can follow in this datasheet applications are general design consideration of the 555 timer, frequently asked applications question (FAQ), design formulas, and sample of some ingenious applications. The sample of applications were presented such....
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The circuit shows TL494 Pulse Width Modulated Step?Down Converter Circuit Schematic. With this circuit you can have circuit test such Line Regulation, Load Regulation, Output Ripple, Short Circuit Current and Efficiency test with various Vin conditions.....
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This UC3825 IC, which is manufactured byTexas Instruments, is a high-speed pulse width modulation (PWM) controller which can be considered as the DC/DC Converter central processor in the following example of controls circuit that is primarily composed of....
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Usually, semiconductor laser diodes are operated from current drives. Unfortunately, The output power is strongly dependent on the device temperature ? a...
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Ultra simple circuit of the tilt sensor alarm presented here can be fabricated using readily available inexpensive components. The circuit is a true transi...
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This time delay relay circuit is built with IC NE/SE555, produced by Intersil which contains a precision timer. Stability to temperature variations is 0.00...
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// 555 Timer With On Off Delay Circuit Here is a timer circuit using common IC 555. The circuit is designed to facilitate time adjustment of both...
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This simple alarm timer circuit is made with 4060 which has an integrated oscillator with a good stability with a relatively wide frequency range. In the c...
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If you would like to automate? the opening and closing a rolling shutter with a time controlled switch, a few additional wires will have to be ...
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The circuit below is similar to the one above but can be used with a laser pointer to toggle the relay rather than a push button. The IR photo transistor Q1 (Radio Shack 276-145A) or similar is connected to the set input (pin 6). The photo transistor should....
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Circuit diagram is one of the circuit diagram to set the tone. Circuit diagram This is controlled by using the tone control IC TDA 1524 the type that includes all of the balance of bass and treble volume in one IC TDA 1524 a. You can setting a potentiometer,....
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This is a three-modes lamp dimmer circuit with touch control. This circuit can be used to control a lamp in 3 operation modes: dim, off, and bright. A NE555 ...
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With IC SLB0586A from Siemens you can build a simple touch light dimmer circuit that will allow you to adjust the lamp intensity. Together with a TIC206D...
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A DC-to-DC step-up converter is traditionally implemented using transformer, working by converting the DC voltage to AC Voltage, step-up it using transformer, then rectify and filter the transformer`s output to get a higher DC voltage. Using a switching....
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You checked the transistor by measuring the resistance between the different pins. Sometimes it has problems, such as when measuring the resistance between the...
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the circuit schematic diagram of Fan Speed Control which turns on only when needed. when your transistor getting hot, the fan will automatically ...
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The circuit was constructed using a few components that is powered by a 9 V battery for sensing the presence of bugs transmitting within the frequency mod...
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This is circuit Function Generater,Triangle and Squarewave Generator. Use IC 40106 and Transistor BC547. VR1 For Control frequency Output. S3 to Seclector...
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The VHF frequency is generated by a tuned Hartley oscillator circuit. Resistors R2, R3, and R4 bias the transistor, with tapped inductor LI and trimmer capacitor Cl forming the tank circuit. Adjusting Cl determines the frequency. Capacitor C2 provides....
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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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The following figure shown the driving of two phase bipolar stepper motor control circuit by using the current controller L6506. The IC L506 generates the needed signals to drive the inputs of the L298 of this bipolar stepper motor circuit driver..
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The diagram below schemes Two Phase Bipolar Stepper Motor Driver using PBL3717A. It shows two PBL3717A IC that control and drive two bipolar stepper motor..
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Operation of the circuit. Circuit is divided into three parts: low frequency production. The manufacturing high frequency and extension of production low...
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UHF antenna booster can be used for better reception, especially when you`re far from TV station / relay transmitter. This UHF antenna booster works in 400-850...
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The following circuit shows a Radio Remote Control Circuit Diagram. This circuit based on the? UM91214B IC. Features: use of DTMF (dual-tone ...
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The schematic herein shows a minimum component solution to the USB battery charger using LTC4053 IC to achieve a fully compliant USB charger. This IC is a standalone linear charger for lithium ion (li-ion) batteries that can be powered directly from a USB....
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The charger in this project is designed to charge two AA NiMH or NiCd cells of any capacity (as long as they are the same) at about 470mA. It will charge 700mAh NiCds in about 1. 5 hours, 1500mAh NiMHs in about 3. 5 hours, and 2500mAh NiMHs in about 5. 5....
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Here is a simple USB FM transmitter that could be used to play audio files from an MP3 player or computer on a standard VHF FM radio by connecting it to an...
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Life in the 21st century would be almost unbearable without some of the computer peripherals that PC users now look on as essentials - take for example the USB powered teacup warmer; this device is obviously an invaluable productivity tool for all users but....
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USB car charger adapter circuit design using LM317 regulator circuit..
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The Universal Serial Bus (USB) interface has become extremely popular, due to its simplicity for end user applications (Plug and Play without restart). For developers, however, USB implementation into end systems has been more complicated compared to e. g.....
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This ultra-bright white LED lamp works on 230V AC with minimal power consumption. It can be used to illuminate VU meters, SWR meters, etc. Ultra-bright LEDs available in the market cost Rs 8 to 15. These LEDs emit a 1000-6000mCd bright white light like....
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The circuit functions like a unijunction transistor relaxation oscillator. The base of the lower PNP transistor is biased at roughly half supply. As the 100pF capacitor is charged up through the 1G resistor, the base of the upper NPN transistor reaches a....
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The circuit is designed to be low cost. It uses a PIC12C508 to perform the control functions and standard 40khz piezo transducers. The drive to the transmitting transducer could be simplest driven directly from the PIC. The 5v drive can give a useful range....
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One of more advanced PCB manufacturing methods is exposing laminate copper boards covered by photo resistive layer through mask. Using UV light in manufacturing PCBa‚¬ s has many benefits according to other methods: you can get thin tracks like 0. 2mm. You....
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This universal triac controller circuit with optocoupler solves the problem that triacs have when functioning at low temperatures (triac needs higher gate...
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Neural networks are wide topic. But this small example demonstrates how to create basic neural sensor which takes resistive readings from multiply sensors and multiply it by wight factor and then sum the results. Results are compared to three level....
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Many analog ohm meters have non linear scale, so the resolution become worse at higher resistance value. This because they use cheap current source, only a...
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Using VFC110 chip, we can build a high frequency voltage-to-frequency converter. The features of this chip include the capability of high frequency operation, disable function, and an on-board precision 5V reference. This precision reference can be used to....
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This amplifier has VHF (very high frequency) and UHF (ultra high frequency) response, you can use it for receiver booster for example. Here is the schematic...
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Together with a good directional antenna this high performance two-stage antenna amplifier for the VHF FM broadcast band will enable you to capture far rem...
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Here is VU meter 10 LED circuit, This simple LED VU meter has only a few parts but it is useful as an indicator for the sound. The circuit is built around an...
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This is a circuit schematic diagram for the VU meters. Circuit diagram is controlled by IC TL072. A measurement circuit according to the National general application. Around the input circuit IC1 to make adaptation and amplification of the trimmer TR1....
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This circuit uses the measurement of SIEMENS and UAA180 circuit of rectification of accuracy, around IC2B TL072. Calibration has been a 3dB steps from one another LED, make sure, a very good level of precision, the measurement of acoustic signals entering.....
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In a basic astable timer, configuration timing periods 11 and 12 are not controlled independently. The lack of control makes it difficult to maintain a constant period, T, if either 11 or 12 is varied. In this circuit, charge RAB and discharge R8 c....
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This circuit provide automatic current limiting up to 8. 4A. Unlike current limiter that uses only a resistor, this current limiting circuit doesn`t drop the voltage, or at least keep the voltage drop at minimum, until a certain current amount is exceeded.....
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A Variable DC Power Supply is one of the most useful tools on the electronics hobbyist`s workbench. This circuit is not an absolute novelty, but it`s simple, reliable, "rugged" and short-proof, featuring variable voltage up to 24V and variable current....
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This sine wave generator is adjustable between 15 Hz to 150 kHz. The circuit is basically a Wien-bridge oscillator, with multiple capacitor selection. Here is...
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Variable Gain Amplifier controlled by voltage, works as video amplifier. It use 3 Field Effect Transistor (FET) type U1897E. U1897E can be replaced with 2N4091..
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Current handling capability of a power supply system often needed to be checked. Finding high power rated variable resistor to provide variable load testing...
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If you are a hobbyist or a professional electronic engineer who make many electronic experiment, troubleshooting, or testing, providing wide range variable...
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This circuit uses an oscillator (2N2222) and a diode Dl as a nonlinear mixer. The frequency is set by a slug in Ll. RFCl, Cl, and RFC2 form a low-pass filter to pass video and block rffrom the video source..
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Video amplifier circuit based IC LM359 which a Dual, high speed, programmable, Current Mode (Norton) amplifier, can be used for general purpose video amplifiers...
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Fading a video signal can`t be done simply by attenuating the composite signal, since the synchronization signal may drop below unacceptable level. Here a ...
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These days many more audio-visual devices in the home are connected together. This is especially the case with the TV, which may be connected to a DVD player, a hard disk recorder, a surround-sound receiver and often a PC as well. This often creates a....
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LT1206 is suitable for driving multiple video cables since it has 60MHz bandwidth, 250mA output current capability, and low output impedance. Please keep in...
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An NE592 or LM733 is used as a general-purpose video amplifier in this schematic.J2 and J3 provide two anti-phase outputs.R2 is a gain control.The bandwidth is about 100 MHz..
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In the video system of Figs. A and R, a single coaxial cable carries power to the remote location, selects one of eight video channels, and returns the selected signal. The system can choose one of several remote surveillance-camera signals, for example, and....
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This circuit enables you to connect your camera with very long wire. The circuit is actually a video amplifiers. At the sender part, the amplifier is used to...
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This circuit permits direct connection of composite video signals from video games and microcomputers to the antenna terminals of TV sets. The output signal level is controlled by the modulation input. ..
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Ql and Q2 switch the primary windings of transformer Tl via a square wave at a frequency determined by its magnetic properties. Diodes Dl and D2 provide base return paths for the feedback current of Ql and Q2. The output winding of T1 is connected to a....
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This room light controller project automatically using Microcontroller Visitors Counter is a reliable circuit that takes the task of controlling the room...
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Feedback in public address amplifier is something that should be avoided. The ideal solution is by adjusting the microphone and the speaker position, but it`s not always possible in many situation. Using frequency shifter to change the output frequency 10Hz....