The circuit was designed to create a touch switch that can be used for ON/OFF functions in modern technology. BC547 – NPN small signal transistors designed for general purpose switching and ...

This circuit enables the on/off times of a 555 timer to be independently varied over a wide range. This is not possible with a conventional 555 circuit with the RC network being charged from the ...

When planning for a week-end outing to return late in the evening, we are often in an ambivalence whether to leave the staircase/outside light ‘on’ or ‘off.’ We sometimes miss our favorite TV program ...

The modern mechanic switches are improved concerning of old technology. We need however many times to replacement some old switch or to check currents bigger than the durability of certain switches or ...

Are you in the habit of falling asleep while listening to music? If yes, you’ll love this automatic off timer circuit. It starts functioning when you switch off your bedroom light and will turn your ...