Top Circuits Page 199
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The sound will a little 2W+2W just but enough with 6 sizes are inch 8ohm loudspeakers. as a result still have a voice good loud the moderately. Request friends have fun the circuit amplifies this miniature please yes. If phone your light exceedingly ring.....
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The telephone repeater or The call signal peripheral circuit to the loud than the original. It`s a circuit that we design follow the request. One of my friends ..
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This cheap frequency meter circuit that we show to you. Suitable for general use in small laboratories. Because cheap, easy to build. And Qualified enough. For applications most of the electronics amateur. It can be shown that the frequency read directly....
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This has been the first Mosfet power amplifier of me, It is the most complete circuit. As a 60 watt power amplifier, this is sufficient for normal use in my....
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From This simple projects If you want circuits with special features,can be set the program to the circuit works, when the input pluse signal is entered of....
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This be Simple Doubler Voltage circuit, from voltage 12VDC to be 24VDC. By use Timer IC highly popular the number NE555 and other equipment a little again. It can give current get about 50mA convenient for the circuit, that use low current the small-sized.....
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The power Amplifier hi-fi OCL 120W rms sizes really, if use power supply circuit at enough good and use 8ohm size prominent point interesting loudspeakers. Of the circuit be use the transistor entirely have no the integrated circuit mixes. Then make bland....
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Suppose, you want to use the 5Vdc power supply levels up to 100mA, But there is only one single AA 1.5V battery. This working we need to use The DC to DC....
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When you want to build the lead-acid battery charger project for 6V battery or 12V. Although there are many methods to choose from. I like using IC LM317....
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This The multi-purpose Amplifier using TDA2030. It is have power 8 watt (RMS) at 8 ohm loudspeakers. It is have low noise be valuable THD (Total harmonic....
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This is simple a led flasher circuit that I would link to suggest you make it.But before you can use transistors,which difficulty when we learn about digital....
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A good quality preamp tone controls, a total of three circuits. We choose to use the NE5532 is main so interesting IC, because the ultra-low noise properties, it is commonly used in many fine audio. But these circuits are old. I have a circuits of friends.....
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Most timer circuits. Often used with electrical transformers containing low as 9V and 12V, and use of electrical control relays.but the 1-15 minute timer....
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This circuit is maintain a constant voltage, the output voltage is adjustable. Serves to reduce the input voltage, and keep the voltage constant. The Q1 2N3904 is the amplifier model. common-emitter. This causes the voltage across the collector`s pin with....
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This is a very Function Generater project. can be used Triangle and Squarewave Generator. The main parts are CD40106 popular CMOS IC and a normal transistor is....
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This circuit can be used to measure the voltage to 15 volts.Using the current from the battery 9 volt,At 23 mA only. Input circuit has a diode, to protect the....
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This is the video amplifier circuit or the video splitter circuit, it is designed to take video signal is stronger. Compensate for the loss of signal, and is....
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This be simple check pressure level circuit, with integrated number circuit TL431. When use power supply 5Volt in digital circuit. The general feeding signal....
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This be Water Sensor Alarm Circuit for warn the water level , by when sensor point touch the water or the rain. The circuit have a voice loud warn hear....
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This is Wide band high frequency amplifier circuit,Wide frequency band between 75-150 MHz,Using transistors, a PNP amplifier.To enhance the signal strength.Before the receiver of the phone. Or FM radio or amateur radio. If high-frequency signals, in....
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One requirement in a wide range of applications is a spontaneous source of some continuous signal, having a regular and definable wave shape. One of the most important of these is a square wave. The circuit to the right uses a comparator with both positive....
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This is a very simple 555 timer circuit,It make a simple theft detterant which may be just as effective. The idea is to have a flashing red led indicate that your car is protected. This device can protect your vehicle from potential thieves....
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Utility vehicle anti-theft alarm circuit as shown. It is mainly composed of two major anti-theft alarm circuit parts and components. Security circuit: When the car owner left the car, it will be placed on anti-theft switch S B, and make the....
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Circuit LA3600 5 Band equalizer Circuit schematics Circuit Electronics, One type of regulator of tone / tone controls are the audio Graphic Equalizer. audio Graphic equalizer have 2 kinds in my opinion. Namely audio Graphic equalizer Bar a....
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Here is the LM383 schematic for an 8 watt audio amplifier. Very easy to build a mini-audio power amplifier. Part Total Qty. Substitutions C1 1 10uf Electrolytic Capacitor C2 1 470uf Electrolytic Capacitor C3 1 0.1uF Disc Capacit....
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Audio Amplifier 100W or 130W Outputshould be2(out=90W) or 4(out=130W) audio power transistors. PCB and layout Use T3 on Heatsink Component Ref./Value Type R1 120K 1/4W Resistor R2 3K3 1/2W Resistor R3 5K6 1/4W Resistor R4 3K3 1/4W Resistor....
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Thermostat LM56 Project Circuit Diagram LM56 Thermostat Project Circuit Diagram values of R1, R2 and R3 for the required trip points VT1 and VT2 can be determined using the subsequent equations. VT1 = 1.250V x (R1)/ (R1 + R2 + R3) VT2 = 1.2....
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This tour, available in Stainless DIL 8 legs, can measure 4 analog voltage independent between 0 and 5 volts, and send the result of this measure in the form of four characters on a standard asynchronous serial link. Its serial output is di....
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A data logger is a device that records measurements over time. The measurements could be any physical variable like temperature, pressure, voltage, humidity, etc. This project describes how to build a mini logger that records surrounding tem....
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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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Third series of the function with the same system, namely BTL (Bridge Transformer Less). By using such configuration we get several advantages, namely no use coupling capacitors or coupling transformers...
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Circuit audio peak indicator circuit schematics Circuit Electronics, Schematics for audio peak indicator circuit Circuit Electronics....
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Circuit KA2211 stereo audio power amplifier schematics Circuit Electronics, This amplifier circuit has a stereo output with a power output of 2 x 5.8 Watt with impedance 4. The frequency response from 30Hz up to 20kHz. amplifier circuit base....
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Amplifier with digital volume control can we make predictably because the circuit is made simple with just single chip TDA8551. The series of Mini amplifier With digital Volume Control is a type BTL amplifier with 1 Watt. Techniques for adjusting the volume....
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Circuit Making Home Theater 5.1 Surround amplifier schematics Circuit Electronics, Actually, 5.1 channel amplifier consists of 6 amplifiers 1 channel mono, which has certain specifications on each canals. Has 6 channel surround sound ampli....
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Circuit PT2399 digital Echo Circuit schematics Circuit Electronics, Digital Echo Processor IC PT2399 is using CMOS technology in audio purposes. digital Echo Processor PT2399 is implementing the system in the process of ADC and DAC audio r....
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Circuit stereo TDA2822 audio power amplifier circuit schematics Circuit Electronics, In this series I use IC tda2822M as the main amplifier, but if you want to use in addition to IC TDA2822M you can use ic I mentioned this is KA2209, NJM2073....
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Circuit USB Soundcard Circuit with PCM2702 schematics Circuit Electronics, Creating a sound card is not more complex problems. If you useGreat IC PCM2702 from Burr RED / Texas Instruments you can create a cardUSB sound fully functional. The....
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Circuit LM3886 High Performance audio Power amplifier schematics Circuit Electronics, Audio Power amplifier is an important part in sound reproduction ina sound system. audio Power amplifier with this power IC LM 3886Audio Power amplifier....
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Circuit High power car audio amplifier schematics Circuit Electronics, This is a power amplifier which functioned as the car audio amplifier IC that uses PA02 and LH0101. That each IC has a 30W output power with 8 ohm impedance. Part List R1....
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This is is a stereo power amplifier circuit works up to 22W on each channel. It will be 2x22W output. A few externel components required to support the main component of TDA1554. Heatsink on the power IC is a must to prevent overheating on the power IC. The....
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This Electro Harmonix Big Muff Pi circuit would most likely be better making the change by a contemporary input-jack power and a DPDT bypass switch. The kinds of transistors and diodes are unknown. It really is most likely that any high acq....
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The following schematic is the diagram of 5.8 stereo power amplifier based on Samsung IC KA2211. The 5.8W is the power output on each channel, it means that the output will be 2 x 5.8W (maximum). About KA2211: KA2211 is a dual audio power am....
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The following circuit diagram is the 100 Watt power audio amplifier circuit, build based on power amp chip LM3886. The single chip of IC LM3886 is able to amplify the audio power output up to 68W . In this circuit, the two of LM3886 are para....
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This is iKHz sine wave generator circuit built based on configuration of inverted Wien bridge (see C1-R3 C2-R4). R5 and R7 used for output amplutide setting. Set R5 to read 1V RMS on an Audio Millivoltmeter connected to the output with R7 ro....
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Here is a simple Tachometer schematic. The basis of the frequency converter circuit-current, which converts the input signal into a proportional current measured pointer device. ..
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The induction coil forms part of the anti-sidetone circuit. It couples audio to the receiver, and also reduces the volume of the callers own voice in the earpiece, which would otherwise be loud compared to the incoming audio from the distant end. The....
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It incorporates a Starter for each lamp, which heats up the fillaments [Cathodes] at each end of the lamp prior to starting. Once the lamp has started, it no longer requires heated fillaments. The heating is only a starting aid. During normal operation, the....
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A small bias on the bases of Q1 and Q2 via R1 and R2, assists in "starting" This gives each transistor`s base a small forward bias, so that both transistors tend to conduct when the circuit is first switched on [the base voltage on each transistor is zero....
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Each components of the circuit is shown in a simple block form with a corresponding label for identification purposes, using no special symbols or language and the interconnections of these components are represented by solid lines. You can read the block....
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The single line diagram is circuit diagram where "one-line" is shown to represent three phases of a three phase power system. In addition to showing the ratings and size of electrical equipment and circuit conductors, a properly drawn one-line diagram will....
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Open and Short Circuit Test on Transformer are done to elect equivalent circuit of transformer, voltage regulation of transformer and efficiency of transformer....
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This paper will guide you through how to do just that. We`ll review a simple computer system and how it works. Then we`ll take a look at the BASIC programming language and the statements that it has that will allow us to `talk` with the external circuitry.....
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A common NPN transistor can be turned into a negistor by wiring it in reverse. The emitter is connected to the power source through a resistor and the collector is connected to ground. When wired this way the transistor exhibits a phenomenon known as....
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This wiring circuit diagram is design for when you want to give supply to particular rooms in the home or office in the building in case of failing the power supply. And you want to supply power continuously to the laptop, computer etc in that specific rooms....
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We had already connected Phase & Neutral (from Power house) to Electrical Appliances i. e. Fans, Light points etc. So according the above UPS Connection Diagram. connect an extra wire (phase) to those appliances where we have already connected phase and....
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You can see that circuit is complete and bulb is ON. Suppose you want to OFF bulb from the upper switch at top of stair, simply Switch OFF the switch then circuit will break and the bulb will be OFF. You can switch ON the bulb again to switch ON this Switch.....
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If you have plane to use this Circuit on 110V 60Hz instead of 230V, 50Hz, or want to modify this circuit, Then See the Section " Common Question about this Circuit" below the "instruction". Also Note that here is two circuit diagrams, so the first one is....
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Here you can see that what i did in this circuit. because the resistor on the back side ( which i have soldered) was blown out. so the root of problem was that specific resistor. And in this case, the pattern change switch is on Option 3 i. e on Full light.....
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It`ll work on single supply. I`ve used it when I ran my lunetta on a 9 volt battery for a while and it`s still loud and proud running on my new regulated 5 volt wallwart. If you want one with input gains (to plug in guitars or mics), I made a modified....
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According to the datasheet. I connected the respective color wire to the respective pin of l293D according to the following circuit diagram..
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A cellphone operated robot and i`m stuck with Atmega32A microcontroller programming. As software you can use then AVR STUDIO 4. Unter the Tools you can find the Menu "Programm theAVR" Chose there your used Programmer and you can setup and Programm your....
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Create a device that did not rely on gasoline, was simple to operate, could be used as a backup energy source, and to share with others how I built the device. The how-to video series is setup very similar to my previous large project which was showing....
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MOC3020M Integrated Circuit. I would love a LED to tell me when each cap is charged but I have no idea how to do that or where to put in the circuit, I have a bucket load of 5v LEDs so making use of some would be great. I have Circuit maker but dont have a....
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C1 takes the DC decoupled voltage from the Microphone, amplifies this via Q1, C2 decouples it again, then R6 and C3 Low Pass Filter it, but once we get to Q2, Secondly how does this circut actually accomplish frequency modulation: Please use math on me! (I....
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A simple audio amplifier with a 10 Vpp output for use with the AD633 ring modulation chip. the datasheet for the chip is here; I will be using the xr2206 function generator IC for the modulation input. This is the circuit I`ll be using;..
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Doing the caller id with the pic 16f628A. My programming and ic are working very well but my mt8870 decoder is not working. i need some help here. i stay in Malaysia please help if anyone got any idea..
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I have found the schematic diagram on Metal Detector For this class it does not have to be orginal, the project can be taken from the internet. I have a few questions regarding this schematic diagram. There is a small arrow connected from the Emitter of the....
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How hard it would be to convert the relay in this design to a triac It switches a 120v Ni-chrome wire that is 60ohms. Thanks for any help you can offer. Your right i apologize. The ic powers off of a 12v transformer. However there is a 120v neutral and line....
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The reason i was asking more so than just the power consumption was the fact that some stepper motors seem to have more wires than the four that i have and other stepper motors are called bipolar...
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An ultra sensitive gauss meter circuit/schematic anywhere that constitutes a simple indicator No measurement. No scaling. No accuracy. Just hall device/ic on a board with power supply inputs, a bit of signal conditioning of maybe a dozen more parts, and a....
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The currents listed are maximum values, the actual current used will vary on what the circuits are doing. That precludes just placing a resistor in series to drop 12 to 9 volts and run the units. Note that on each circuit there is a 1N4007 diode in series....
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Many companies online claim that they are making a shield/jammer for rfid and since Rf is like RFID and it gives off a frequency of 58khz it should be easy to jam It is against the law to jam radio communications. Maybe if you are in the middle of a huge....
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A microphone to listen to a wristwatch and want to cancel the ambient noise in the room. I have included a circuit that I plagiarized from a headphone cancelation circuit. Will this circuit that I have drawn here work. Whoops forgot to include the Schematic....
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LED`s lining the headliner, and have them fade in when the door is opened, fade out when the door is closed. I think it should be simple. from what i gather i`m going to need: i don`t really know. basically i need to know what circuits will be necessary to....
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A vco using the LM324. I have the schematic to the korg monotron, which uses the lm324 as the IC for the vco, but I am struggling to create a simple circuit in which the lm324 will produce an audible wave form when connected to a speaker. can anyone help....
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This will drive a total of 42 LEDs. It is based on the assumption that the forward voltage of your LEDs is ~2. 2V, and that they will be bright enough with a forward current of ~21mA. If yours are a lot different, I will have to modify the design. The 2n3904....
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Modify it to click and latch a relay when i press the button from any ware in the house. Also if it is somehow possible unlatch the relay when pressed again. Im sure you know what i mean. I was looking at it, all i think i have to do is create some sort of....
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On astable multivibrators, the duty cycle is usually fixed unless there`s a potentiometer in place, but even still with a diode in parallel with R2, you will only get a duty cycle less than 50%. Also, to ask a question in a new thread, youcan click here.....
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Drive an ultrasonic transducer by using this driver circuit. I have a quesiton for this operation. How can I limit my output current I am using a 60W transducer and maybe it can be damaged because of the output current. Could you direct me, or share sample....
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As per the note on the schematic IC-2 is a 74HC74 TTL chip, look up the data sheet and it will show you what pins 7 and 14 are. The note for IC-3 is down lower its an AC optocoupler part number MOC3041. D2 is noted as a 15volt. 4 watt zener diode, a part....
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A small ultrasonic cleaning device and it runs 1 x 50W transducer at the moment. I am going to build another that uses two 20W transducers and was just wondering what the best configuration is, to wire them in series or in parallel My circuit designs should....
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GND and VCC are perpendicular to the rest of the pins in the circuit diagrams, whereas the real Z80 is a DIP with no pins at all in these locations. I find that this makes the circuit diagram harder to read. I have to map between the real physical pins and....
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Make H-Bridge for controlling DC brushed motor with PWM. One bridge will control 1 DC motor. Bridge will have 3 inputs: A, B and PWM. A and B will be direction control while one PWM signal will control motor speed no matter in which direction it will spin.....
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I think the zener diode is not producing enough current on its breakdown state to turn on the transistor. I tried removing the resistor R2 but still won`t work. Can you help me how to make this work First, the zener looks like the voltage selection might be....