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33 articles matching “circuit”
OR-gate realization
To make an object counter we can use a simple dark detector circuit and a normal calculator. Pole and NO (Normally Open) terminals of a relay have...
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Object counter using LDR and calculator
To make an object counter we can use a simple dark detector circuit and a normal calculator. Pole and NO (Normally Open) terminals of a relay have...
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Multivibrator
A multivibrator is an electronic circuit used to implement a variety of simple two-state systems such as light emitting diodes, timers and flip-flops.
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Remote Tester
Remote tester circuit also resembles the logic of a "dark sensor (using BC557)”. LDR has been replaced with IR sensor TSOP 1738. The circuit works...
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Toggle switch
This 555 timer circuit below toggles the LED when a button is pressed. Pins 2 and 6, the threshold and trigger inputs, are held at 1/2 the supply...
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Mode of NE555- Monostable
Monostable mode of operation Monostable mode of operation of 555 IC can be explained using a simple touch sensitive circuit. Here, timing constant...
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Mode of NE555- Astable
This circuit has been configured in Astable mode. The output pulses are determined by the values of resistors R1, R2 and the timing capacitor C1....
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Building a circuit on a breadboard
A breadboard is a device for testing temporary electronics projects. Components used to test a circuit can be reused for other projects. None of...
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Dark/Light sensor using transistor
Automatic Light detector using variable resistor A light detector senses light. As the light level increases and LDR meets the lowest threshold...
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