This simple LED voltmeter circuit, although simple, is capable of accurate voltage measurement. The input is applied to the high impedance input of IC1 via the attenuator comprising of R1 […]
Constant Volume FET Amplifier Circuit
In numerous occasions it is desirable to obtain an amplifier that gives an output signal of constant amplitude for numerous input signal levels and with the very least distortion. A […]
Snooze Delay Timer Circuit
You can switch ON the “Snooze” function by pressing the S1 button and add a desired delay to the connected alarm The alarm is muted for some time so that […]
Stereo Hi-Fi Headphone Amplifier Circuit
This circuit can be used with a stereo headphone for amplifying a low level input signal into a sufficiently high output signal in the headphone. The circuit diagram of the […]
Simple Infrared Transmitter Circuit
The presented simple infrared transmitter circuit design can be used in the form of an infrared remote control, with a frequency modulated tone, to operate a complementing IR receiver circuit. […]
Simple Fire Alarm Circuit
The post discusses a simple fire alarm circuit that you can build and install at home or shop for detecting a fire hazards and sounding an alarm. At the point […]