Tagged: 555 circuit

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Voltage controlled oscillator circuit – VCO using 555

A Voltage controlled oscillator (VCO) circuit varies its frequency of the oscillation with respect to the externally applied voltage. The VCO circuit can obtain a linear variation of oscillation in relation to the input voltage. The...

IR remote control circuit diagram 2

IR remote control circuit diagram

Here the circuit of a single channel Infrared remote controller, which can be used to control home appliances and devices. The IR remote controller consists of a receiver circuit similar to a toggle switch...

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Auto power cut off timer circuit

An automatic timer switch turns OFF a load itself after a fixed period of time. The circuit will be useful for various devices which we forget to turn OFF such as light, alarm, indicator circuits,...

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LED chaser circuit using IC 4017 and 555

Here the circuit for a LED chaser or LED running light, which can be used as a decorative light, fancy light, chasing taillight for vehicles, etc. The circuit consists of a 555 timer with...

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Vibration sensor alarm circuit diagram

The circuit can be used as an intrusion detector alarm which can be simply placed on doors, floors or any surface where any vibration or pressure is generated during any intrusive actions. This burglar alarm...