Category: Circuits

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Voltage Doubler Circuit schematic

AC to DC Voltage Doubler Circuit A voltage doubler is a circuit which produces an output voltage which is double of the applied input voltage. The below diagram is an AC to DC voltage...

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Simple touch switch circuit using transistor, 4017, 555 IC

A touch switch operates with a touch action of an object. It is used in hobby devices to high end consumer electronics for various applications. Touch switch circuit using transistor The given touch switch circuit...

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Audio Tone generator circuit

A tone generator circuit can be used for various applications such as alarms, bells, indicators, etc. A tone generator consists of a square, triangle, saw tooth periodic wave generator circuits, commonly square wave generators. Such periodic...

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How to make a Continuity tester circuit

A continuity tester is a device used to determine the existence of an electrical connection between two points. It consists of two testing probes which will be connected to end contacts in the circuit....

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Automatic Light Control Circuit diagram using LDR

These circuits can be used for different automatic light sensing projects including automatic night lamp, automatic street light controller, dark sensor circuits, etc. Automatic night lamp circuit using IC 555 An automatic night light circuit...

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Half wave rectifier and Full wave rectifier

Rectifiers A Direct current flows only in one direction, which means it has a constant polarity across its terminals. Where an Alternating current periodically changes its direction of the current, that is an alternating polarity at...

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Police strobe light led flasher circuit with 555

Strobe lights are commonly used as emergency vehicle lights for visual warnings. Their light effects are similar to the flashing light in police vehicles, ambulance, beacon light bars, etc. The given strobe light circuit...

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Brake light flasher circuit

Simple flashing brake light The circuit can use to make a simple pulsating stop brake light which continuously flashes as long as the brake is applied. Here we are using a 555 astable multivibrator...

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UM66 Melody Generator circuit

The given melody generator circuit is built with musical IC UM66. A melody generator using um66 is very inexpensive and simple to assemble. The circuit can be used as a door bell, musical alarm,...

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Automatic battery charger circuit with LED indicator

Here the circuit for a 6V automatic battery charger which has overcharge protection with LED indicator and current limiting feature. The circuit regulates the charging of the battery by taking feed back of the voltage...