Top Circuits Page 125
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Dry Cell Charger utilizing very few component for recharging dry cell 6 to 8 time using principle PCR (Periodic Current Reversal) circuit diagram of various project...
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Duty Cycle Selector is unique project to select duty cycle in 9 steps up 100% circuit diagram with description of duty cycle selector various digital circuit...
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Here is verified circuit of simple, interesting and inexpensive electronics clapper (sound generator) circuit diagram with description of electronics clapper...
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Simple counting can be done by anyone but counting in interval up to large number is tedious and the chance of forget is maximum. As, we have already published Counter Circuit | Digital Counter. Now, here electronics counter is second project by dreamlover....
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Electronics cricket game circuit shown in this website is very simple and easy to build circuit diagram of electronics cricket project various game project ...
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Here is another fun project for children as well as electronics beginners. We often hear the sound of grasshopper or cockroach (i. e. shrill sound) at night. The project published in this website Electronics grasshopper produced PI-PI sound (sound like....
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Electronics motor control is a simple circuit made without IC.electronics control of AC motor.circuit diagram with description of electronics motor controller...
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Clinical thermometer is only used by doctor because it is difficult to read. Here is a circuit of electronics thermometer used to measure vast range of temperature from -200C to 1250C. This single circuit electronics thermometer can be used to measure....
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Communication in F.M. band is easy.circuit diagram with description of Power Full F.M. receiver using single IC receive 88 MHz to 108 MHz frequency in F.M. band,...
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Many fire alarm circuit is published in different website. But, here in this website is a simple and inexpensive project of fire alarm using thermistor. where thermistor is used astemperaturesensor of fire alarm. Working principle of thermistor is same as....
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flasher with beeper in this site is very easy to build and assemble. flasher with beeper is build with very common components. various project using NE555 timer IC...
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Frequency shifting keying technique is used to transmit binary data. The circuit diagram with description fsk demodulator used 565 IC for frequency shift keying...
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Fuse Cum Power Failure Indicator employs thermister and timer IC NE555 circuit diagram with parts list of fuse cum power failure indicator indicate power failure...
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infrared remote controlled switch is second remote controlled project in this website using 555 ic circuit diagram with description of remote controlled switch...
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LED indicator in this project can be use in the bike indicator or car direction indicator. Time 555 and BCD 7490 are use with few resistors more than 100+ electronics projects...
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The circuit consists of three parts. The first part has an oscillator while the second has mod 16 counter 7493. The oscillator is wired in self-triggered mode, and the potentiometer VR1 is used for speed control of the running lights. That is, frequency can....
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The lighting source (i. e. bulb, tube light) glow according to their specified watt rating. If we need more light then we have to use high watt bulb at the same place if we need low light we have to replace high watt bulb with low rating. But What if there....
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Light sensitive switch or dark sensitive switch is a special type of switch using op-amp IC LM74 and LDR circuit diagram with description ...
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Mains Trigger Musical Door bell using musical ic UM3482 circuit diagram with description of mains trigger musical door bell various and unique doorbell project...
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Man Machine Sound generator is different type of project in the series of alarm project circuit diagram with description of various type of alarm project ...
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Advanced Melody doorbell is the very interesting project in the series of alarm Circuit diagram with description of melody doorbell using battery instead of AC mains ...
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A microprocessor based project Microprocessor-Based Home Security System . This advance security system not only let you know but also alert police immediately. In the project 8085 microprocessor based home security system we can control siren, telephone....
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Here is a simple project using very common electronics components for charging mobile battery using AA cells. The main part of the circuit mobile cellphone charger is timer IC NE555, used to charge and monitor the voltage level. IC1 get control voltage to....
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Multi-Mode Running light in this website is simple with families design circuit diagram of multi-mode running light bidirectional and 3 different modes with versatile various electronics project with description...
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Multisound generator is very interesting project in the series of alarm project multisound generator generates 8 different type of sound circuit diagram of.various electronics project...
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Multi Switch Controlled Relay circuit is used to control home appliance circuit diagram with description of multi switch controlled relay utilization 1 IC various control IC...
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Off timer with alarm is a simple project used to indicate time off employs 4 transistor,.circuit diagram with parts list and description of off timer with alarm.various alarm project...
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Here you can get the circuit diagram of ohm meter for a low resistor measurement. More about you can find 300+ electronics circuit in this site..
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Over Voltage Protector is a simple circuit used to protect appliance from over voltage circuit diagram with parts list of over voltage protector various electronics project...
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PC based candle ignitor is a pc based verified project for computer student using 555 lighting candle using computer circuit diagram with software code in C ...
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PC-based data logger used in physics laboratories for automating simple experiment and or monitoring slowly varying physical variable various pc-based project ...
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Programmable timer for appliance circuit is advanced timer appliance is controlled by timer circuit from 8 sec. to 2 hour.circuit diagram of programmable timer for appliance ...
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Programmable Timer in this website is very simple made from only 2 iC of wide range circuit and description of programmable timer various timer project...
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Ripple-free, Short-circuit protected variable output voltage and current power supply in this website is verified project.circuit diagram with description of power supply circuit various power supply circuit ...
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simple and powerful FM transmitter is a interesting project using one transistor range of 100 M circuit diagram with description of FM transmitter various interesting project...
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simple quiz display is made from two TTL 7445 and 7420 ic.indicate which switch is pressed first with circuit diagram.various interesting and verified game project...
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simple siren or alarm using MC1458 dual op-amp and audio power amplifier LM380 circuit diagram with descriptions various siren, doorbell, alarm circuit with parts list...
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Single Chip Memory Call Bell using quad 2 input NAND gate CD4011 record when any guest come in absence of us.circuit diagram with description various doorbell project...
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Voltage fluctuations in the mains are very common phenomenon. These fluctuations can cause heavy damage to costly electronics and electrical gadgets operating for long period of time. For such purpose, an automatic stabilizer is used which is usually quite....
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Universal Timer is a most versatile timer project wide range of 1/10th second to 100s hour time period circuit diagram with description of universal timer various timer circuit ...
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The IC tester in this web site is specially designed for the timer IC LM555. this circuit is used for testing timer IC. circuit diagram and technique of various project ...
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Here timer with musical alarm is a electronics timer project using CD4060.delaying from 1 minute to 2 hour.circuit diagram of timer with musical alarm various electronics project...
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Transistor and diode tester in this website is specially design for testing all kind of transistor .using diode principle diode can also be checked.various type of testing circuit you found here ...
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Triangular wave generator in this website has more advantage triangular wave with maximum peak level and minimum peak level circuit diagram and description of triangular wave generator...
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Twilight Lamp Blinker circuit can be built with LDR and single IC circuit diagram with parts list of twilight lamp blinker various project using LDR and many more...
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Walky-talky in this website is world first verified project made without using any coil range up to 500M circuit diagram of walky-talky with description walky-talky is communication ...
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The controlling range of wireless doorbell is 100M. Transmitter:- This transmitter section is designed around oscillator transistor (BF194B) T2 followed by two transistor (BC148) T1 and T3. Transistor T2 generate special radio frequency determined by trimmer....
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When the output of our multivibrator is low, Q1 (because it is NPN transistor) will be OFF and Q2(because it is PNP transistor) will be ON. So the negative terminal of capacitor C3 will be connected to ground. It will charge from the power supply and through....
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This siren alarm circuit diagram is based on a specialized IC UM3561, which is a low power CMOS LSI specially designed for this type of applications. The UM3561 contains all needed parts ( oscillator, selector circuits, programmed mask ROM ) to simulate....
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A powerful buzzer in the room, combined with a pushbutton at the bottom of the stairs or in the kitchen, could be very handy in such situations. The heart of this circuit is formed by IC1, a TDA2030. This IC has built-in thermal protection, so it`s not....
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When the door is opened, SW1 closes, the circuit is powered and the lamp is on. C1 starts charging slowly through R1 and when a voltage of 2/3 the supply is reached at pins #2 and #6 of IC1, the internal comparator changes the state of the flip-flop, the....
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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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With the aid of an (old) moving coil instrument it is very little effort to make a simple voltmeter that, at a glance, indicates the status of a telephone line. Because the input impedance of this circuit is very high, there is no problem in having it....
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This circuit has been very useful in filling a header tank for a reticulated water supply on a farm. Eight troughs are supplied in different paddocks where a lack of water would have serious consequences for the stock. In the past, the tank had been filled....
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