40 LED Lighting Circuit “LED’s”- every electronic hobbyist and engineers love to play with these to build attractive lightings with ease. LED’s have changed the way of lighting as it consumes less power than the primitive means of lighting used….
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Single Transistor Amplifier Amplifiers play an important role in boosting up the signal to required level and widely employed in audio applications. Transistor amplifiers can be built with ease and also cost effective than other types. In order to built…
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Automatic Night Lamp Circuit Night lamp circuits generally employ LDR to sense the light in the environment and turn on the light based on light intensity. Here is a similar circuit which uses LDR and transistors to switch the lamp…
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Siren Circuit using simple Transistors The above given was a simple Siren Circuit diagram using transistors which can be built and implemented by means of low cost. The basic principle behind siren circuits are producing waveforms which differ in frequency…
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Simple 40W Inverter Circuit Inverter Circuits vary with the power requirements and been widely available all over the internet. Here is a 40 watt inverter circuit which uses IC CD4047B and some transistors to perform the desired action. First of…
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Temperature sensor circuit can be used to detect any raise or fall of temperature in the atmosphere and can be employed for the purpose of monitoring. This temperature relay controller circuit can be used to detect the temperature change and…
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Quiz buzzer circuits have been available numerous in number yet we face many problems in most of the circuits and some cost much. Here is a perfect and cost effective electronic circuit which can be used for quiz in schools…
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