New Circuits Page 92
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This is a simple musical alarm circuit that produces a musical tone when water or some conducting liquid comes in contact with the 2 sensor wires provided. The circuit relies on four transistors and one melody generator IC M 3482. When water comes in contact....
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A very simple proximity detector electronic project can be designed using this schematic circuit. This proximity detector electronic project use a tone decoder integrated circuit ( NE567 ) that will provides a signal with a frequency about 100Khz. When an....
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This is a programmable clock timer circuit that uses individual LEDs to indicate hours and minutes. 12 LEDs can be arranged in a circle to represent the 12 hours of a clock face and an additional 12 LEDs can be arranged in an outer circle to indicate 5....
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This Circuit is a simple Analog to Digital Interface with a capability of 10 to 12 bits resolution. 10 bits means 1024 counts or parts of a full scale FS which is close to 3-1/2 1999 counts. In this 1 V can be read as 1. 000 V that means even 1mV can be....
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This is a simple ambit which I congenital to one of my audio amplifier projects to ascendancy the apostle achievement relay. The purpose of this ambit is to ascendancy the broadcast which turns on the apostle achievement broadcast in the audio amplifier. The....
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Before one magnet was 2x2x3 cm, now it is a round one 1. 5 x 2 cm only. This makes a huge difference, the motor can be run on1 V and 0. 1 A that makes 0. 1 W. you will find a lot of info, and cut time on your project, these two university students have done....
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Opening car`s door is very simple activity, and off course it`s just a daily activity which require no special skill. Almost nothing can go wrong, but....
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The SCC2 is a solar charge controller, its function is to regulate the power flowing from a photovoltaic panel into a rechargeable battery. It features easy setup with one potentiometer for the float voltage adjustment, an equalize function for periodic....
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The present reference is a special application of current source IC Type LM334. It has a tiny temperature coefficient and draws only a minute current: at room temperature, only 10 µA, which increases with large rises in temperature by only a few µA. The....
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A 2002 blazer and I ran the codes on it and it came up po 155 and po 756 which a 02 sensor heater circuit malfunction and ashift solenoid b ckt performance of stuck off. What is that and what will it cause. The blazer has power when it first starts then when....
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Here`s a nifty sound level meter is a perfect one chip replacement for the standard analog meters. It is completely solid state and will never wear out. The whole circuit is based on the LM3915 audio level IC and uses only a few external components. This....
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This Circuit using only a single cell 1.5V battery.C1 need to be adjusted for peak reading. Then, to use it, turn on the transmitter and meter. ....
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Microphone problem on Nokia 6630 usually caused by several reason, damaged microphone, broken path or line, and damaged the UEM IC. If the problem caused by the broken path in the microphone circuit, we need the Nokia 6630 schematic diagram to find the....
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An Infrared or IR sensor/detector circuit diagram using 555 IC used mainly as Water level or Liquid level sensor and proximity detector circuit....
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JFET input. PN photodiodes such as the popular "bullet cell" put out an extremely low-level signal. Yet photodiodes offer advantages over phototransistors. For example, more rapid response to motion. Also, some photodiodes have a peak response in the range....
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Thanks to the fully complementary PNP/NPN output configuration the TDA7383 allows a rail to rail output voltage swing with no need of bootstrap capacitors. The extremely reduced components count allows very compact sets. The on-board clipping detector....
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ICL8038 based audio oscillator circuit. Simultaneous sine, triangle and square wave forms. Dual supply operation. Cover full audio frequency range....
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18-year-old electrical engineer student, Chris Rieger, has been working on his levitating light bulb project ” fittingly referred to as the LevLight Project ” for about six months now. Recently he posted images and a video of the project, both of which....
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This article will show you how to build your own version of the Fire-Stick infrared remote control system. The LITEON infrared receiver modules originally designed-in to the Fire-Stick have been discontinued, and forced us to re-design the original circuit....
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The 230 V, 50 Hz is step downed using voltage transformer and current transformer is used to extract the waveforms of current. The output of the voltage transformer is proportional to the voltage across the load and output of current transformer is....
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The ABS is help to make thestooping distance less and help tosteer while breaking it increase the traction of the wheel anddoesn`t lock while hard breaking. The basic design of a braking system has been around and in use in other applications for many years.....
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Most of people ask TV transmitters. So Today I`m going to give you a very useful circuit diagram. By using this circuit you can send your signals 75m to 100m. This circuit diagram is not my own circuit one of my friends gave me this. I suppose you guys also....
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Here`s a simple low supply rail detection circuit that costs peanuts and takes just 20 minutes or so to make. Its power consumption is quite low, so it could easily be built into battery-powered devices. Instead of using an op amp, the circuit is built....
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I had initially planned to do an LCD tutorial a little further down the line, but there was very high demand for it, and I already had a circuit assembled for testing the new LCD that element14 sent me to evaluate. So, this seemed like an appropriate time to....
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from the mk5 subforum, but thought it better to start a new one given that it relates specifically to a mk6 although probably 90% the same. Plan is to retrofit park assist to a mk6 without PDC. Needed: New park module (1T0919475H) addional wiring harness for....
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The heart of this digital volume controller DVC circuit is IC2 4067 , 16-channel analog multiplexer. Because the 1k has been connected between every input and output, the multiplexer can act like a potentiometer. The total resistance is 15k....
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At one of the previous chapters we have learned how to use a transistor as an electronic switch. At this chapter we will see how a transistor can be used to switch another one. At the drawing you can see a pair of cross coupled transistors. S (set) and R....
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Xpressnet is a bus system for model railways to interconnect input devices, computer interfaces and stationary decoder or feedback detectors. Many commercial input devices (including the multi-mouse from Roco) are based on this bus. The following adapter....
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a street light that automatically switches ON when the night falls and turns OFF when the sun rises. The circuit uses an LDR to sense the light ....
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Manufacturer of Thermoelectric Materials, Custom Thermoelectric Coolers and Value-Added Thermal Assemblies....
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Here we are going to discuss about an Asynchronous 4 Bit Binary Up Counter, a circuit made up of several J-K flip-flops cascaded to generate four bits counting sequence. An up counter is basically a digital counting circuit which counts up in an incremental....
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In this card there is a constant current source is used to activate the phone. The LM339 is used to detect out of hand and the hand of the condition. There are circuits repeat the same because we have the phone interface 8. When the phone on hand in the....
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Used for combining four different positive-polarity marker pulses in radar system. -NBS, "Handbook Preferred Circuits Navy Aeronautical Electronic Equipment, " Vol. 1, Electron Tube Circuits, 1963, p N4-1. ..
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A very simple FSK demodulator for the 2025 Hz and 2225 Hz can be designed using the LM565 which is a general purpose phase locked loops IC containing a stable, highly linear voltage controlled oscillator for low distortion FM demodulation, and a double....
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A Tremolo is an effect unit that modulates the amplitude of the guitar signal, usually in a triangular waveform. This version uses a square waveform, for a more switching, choppingkind of effect. This kind of effect can be heard in the beginning of Plant....
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Having good contacts is important not only in your daily life, but also in electronics. In contrast to social contacts, the reliability of electrical co....
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With a GPS receiver that costs less than a few hundred dollars you can instantly learn your location on the planet-your latitude, longitude, and even altitude-to within a few hundred feet. The output of the VCO is directly connected to a MMIC IC3. This IC....
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Uch as the Hot-Rod enthusiast is forever tinkering with his `wheels` to be `just a little different`, so are guitar players forever tinkering with their guitars and amplifiers in an effort to be `just a little different`. We are always swapping pickups....
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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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The premise of the circuit is this: I want to power L1 coil with square pulses. You can see I`ve got a freewheeling diode to handle the back emf field collapse to protect the circuitry. From previous experiments and talking to others on here, I learned that....
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Article compares high- and low-side amplifiers to measure battery charging currents, recommends selection criteria for current-sense resistors, and describes a high-voltage circuit breaker for overcurrent protection....
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Just an early post to share some work on remote controlling the PXA-70x Multimedia controllers. Target For my new install, I have been looking at no....
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Disconnecting the alarm system from the horn relay will eliminate this, but prevent the horn from sounding in the even of an actual alarm. This circuit serves to silence the arming beepyet maintain the alarm by introducing a small delay into the signal. It....
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We can also take output from collector terminals of the transistors, such circuit is show below. To know the working of below circuit you must read How transistor acts as a switch ..
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Here is a dual colour lamp to read the code printed on the Transistors and ICs. The code and number printed on the black coloured body of these components are difficult to read if the room light is low since the printing is in faint colour or as impressions....
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As the Common Equipment library contains implementation of the equipment used in this sample, the only task for a developer is to properly initialize the device. After installing all the necessary SDKs and updating the device firmware to the newest version,....
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Designed with an output voltage swing of 350mV at better then 400Mbps into a 100 ohm load, across a distance of about 10 meters. LVDS is only an Electrical spec - to be referenced by other specifications, it may be used with either a cable or PWB design. The....
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1993 VW Passat Engine Control Module, Automatic Control Unit, and Automatic Solenoid Electrical Wiring Diagram are shown in the following figure. It shows the connection and wiring between each parts and component of Engine Control Module, Automatic Control....
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This is the circuit of the amplifier channel stereo BTL 15W audio power IC based on TA 8215 developed by Toshiba. In this circuit, power amplifier, TA 8215 two ICs are used. This is for the acquisition of four channels has two channels of each IC. TA 8215 is....
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The approach you have shown would dissipate (12V)(3A) = 36 watts. This is quite a lot of dissipation so the complete circuit will get HOT. There are two possible alternatives: 1) Run the op amp from a lower supply voltage, if available. 2) Use a class-D type....
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A scoring game circuit is explained with circuit diagram, and circuit parts....
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preamp circuits use infront an RF oscilator to make an RF transmitter that is very sensitive to sound. A microphone preamp must provide stable gain...
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In addition to providing an accurate input current limit, the LT1618 can also be used to provide a regulated output current for current-source applications. ..
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A project on temperature/humidity logging a couple of years ago. In that project I logged the temperature and humidity readings in my basement lab over the course of a year. One issue with the approach I took back then was that the data could not be observed....
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This simple circuit can be wired into your headlight switch to provide automatic switching between high and low beam headlights when there is oncoming traffic. Simple electronics project with circuit diagram....
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If the principle of work of the Kapanadze device is the same principle as discovered by Tesla over a hundreds years ago (oscillator-shuttle-circuit) and it is the same principle as described by Bearden thirty years ago (The Secret of Electrical Free Energy)....
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This circuit was devised to switch power to a Peltier cooler in a vehicle. Power to the load from the vehicle`s battery is switched by a SPDT relay while the ignition switch is turned on and from the SLA auxiliary battery when the ignition is off. The SLA....
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This circuit is intended to provide good square waves converting a sine wave picked-up from an existing generator. Its major feature consists in the fact that no power-source is needed: thus it can be simply connected between a sine wave generator and the....
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The LM317T output current can be increased by using an additional power transistor to share a portion of the total current. The amount of current sharing is established with a resistor placed in series with the 317 input and a resistor placed in series with....
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The goal of this project is to design and build a full duplex digital fiber optic voice link over a length of 50m at minimum data rate of 64 kbps. The cores of this project are the designs of LED driver and photo-detector circuits. From the preceding circuit....
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A 3-dimensional LED cube, which I can program, to create Art. No more "Doug Stick Figures", but something really cool. Follow along as I create Art. I looked through my parts bins to see if I had any microcontrollers left over as I was planning on doing the....
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This circuit isn`t easy to built but you will get a great audio quality from this circuit. This circuit will give u a high quality preamplifier, capable to drive high quality power amplifiers with good sound. ..
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This article gives the FM transmitter circuit schematics with necessary explanation. The main component used here is the VMR6512 IC which is a highly integrated FM audio signal (Hi-Fi Audio FM) transmitter chip. You can use this as FM radio transmitter for....
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This post answers the question, ""How to make a pulse width modulator using PIC16F877"" ? Also, using PIC16 simulator (Proteus) you can verify this PWM code....
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Originally I was going to call this posting "Crystal Oscillator Blues". This is given because things have not been going well with constructing the crystal oscillator for the GPS Disciplined Oscillator, as outlined in my last posting ( GPSDO - Crystal....
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The inductive sensor is a simple enough device at the fundamental level. It is simply a coil of wire with a current passing through it. It completely ignores most objects which pass near this coil. However, when a metallic object passes near it, it acts as a....
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This car audio amplifier circuit is based on LA47536 audio amplifier integrated circuit designed by Sanyo. This audio amplifier circuit is specially designed for car audio power amplifiers and. LA47536 car audio amplifier IC has four output channels and is....
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The eggs hatch incubator circuit is composed of the power supply circuit, constant temperature control circuit and sound and light alarm circuit, and it is shown in Figure 4-7. Power supply circuit consists of the power switch Sl, fuse FU2, power transformer....
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This is a follow up to an earlier post I made here. Below is the relevant portion of the schematic for this issue (stuff to the left of Y1 is in original post if necessary). I have finally gotten this circuit working somewhat reliably with one exception. The....
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This circuit yearn for act the performance of the equipment, otherwise Check the fuse here the circuit. The circuit is diminutive and the power supply voltage of all kinds. It demonstrate with LED, 2-color in individual. Which is cathode universal kind, the....
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A second piece of information also came to light recently. I was aware of a story about an original Rife machine schematic which had something to do with Dr O. C. Gruner of Canada who worked with Rife throughout the 1930`s on isolating a fungal form of....
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Assume initially, that there is a voltage Vc on capacitor C1 larger than Vbb-Vg. Where Vg is the cut in base to Emitter voltage and g represent Gamma. Hence the transistor is off and the capacitor C1 discharges exponentially towards ground with a time....
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I am wiring a three phase motor through a two pole vacuum switch. two lines go through the switch but one line is always hot to the motor. is this proper or is this a safety issue?....
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Human infrared thermal release alarm can receive the heat releasing infrared ray issued by the body during the day or night, then it willgive the sound and light alarm. It is ideal for electronic guard. Working principle: The circuit uses imported IC,....
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This device is used as a reminder to take medicine every day. This device actually contains a crystal watch and a 4001 quad 2-input NOR gate with two of the gates (IC1a & IC1b) wired as an RS flipflop. The watch is set to "tablet time", usually mornings,....
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Matrix Keypad is a very useful and userfriendly when we want to design certain applications like Calculator, Telephone etc. MatrixKeypad is made by arranging push button switches in rows and columns. Just imagine, if you want to interface a 4*4 (16 keys)....
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Simple circuit diagram is a schematic remote control, remote control where it consists of two parts of the transmitter and receiver. The first part is a transmitter, circuit diagrams for transmitter IC is controlled by the NE555. This system works by....
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This weeks project is a simple 4-step sequencer based around a 4017 decade counter chip. The basic schematic is based on this circuit, using a 555 timer as a clock source: I changed it a bit by having the 4017 outputs drive transistors that switch current to....
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Here is the circuit diagram of a very simple wire loop alarm based on a N-channel enhancement FET 2N700, a buzzer and few passive components. In normal condition the gate of 2N700 (Q1) is connected to the ground through a 100K resistor (R2) and the wire....
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The SSM2306 is a fully integrated, high efficiency, Class-D stereo audio amplifier designed to maximize performance for portable applications. The application circuit requires minimum external components and operates from a single 2.5 V to 5.0 V supply. It....
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Designed to simulate by electronic means thetossing of a coin, the circuit is based upon a 4049 hex inverter IC, two of which are used. IC1a andIC1b are wired as an astable oscillator, which causes two LEDs D1 and D2 ‰ to alternate rapidly, at a frequency....