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Topic: Basic Electronics
149 articles
How to make an FM transmitter
Practical electronics projects and step-by-step guidance for makers.
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Remote operated musical bell using UM3481
Practical electronics projects and step-by-step guidance for makers.
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Test UM3481 musical circuit
Practical electronics projects and step-by-step guidance for makers.
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Dark sensor using two transistors
Practical electronics projects and step-by-step guidance for makers.
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Clap switch
Simplest and easiest way to make clap switch.
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Light operated switch
Light operated switch works with NE555 timer and light dependent resistor. It uses relay and toggle switch idea for operation.
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Remote Operated Switch
When you press an infrared transmitter or normal TV remote control near TSOP1738 infrared sensor, the 555 timer configured in monostable mode gets...
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Up Counter
An up counter simply counts from 0 to 9. We can use this circuit to make digital object counter. This circuit can also be used to make a digital clock.
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555 timer configured in monostable mode is a simple automatic dark sensor circuit that gives output when light falling on LDR is blocked.
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Telephone misuse indicator
When the phone line is in idle condition (on hook), the full voltage of 48V DC from the exchange appears across the line. When the phone is...
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AM receiver from dark sensor
In this case, LDR has been replaced with capacitor C1-0.01uF and resistor R3-1K has been replaced with L1 & VC1. In place of a LED, a Piezo...
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Basic RC circuit
For the circuit to work as light operated musical bell, we need to connect the SW1- switch to N/C terminal of relay. LDR has to be kept in a dark case.
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