The Zener Diode Voltage Regulator is a simple, cost-effective device used in many electronic circuits to provide a desired level of stable voltage. This is achieved by the Zener diode’s unique property of maintaining...
A door opening alarm circuit is an indicator or a security alert device which activates while opening the device attached door. And the alarm remains ON as long as the door is kept open....
AC to DC Voltage Doubler Circuit A voltage doubler is a circuit that produces an output voltage that is double the applied input voltage. The below diagram is an AC to DC voltage doubler...
A tone generator circuit can be used for various applications such as alarms, bells, indicators, etc. A tone generator consists of a square, triangle, sawtooth periodic wave generator circuits, commonly square wave generators. Such periodic signals...
A continuity tester is a device used to determine the existence of an electrical connection between two points. It can indicate whether a wire, cable or circuit is electrically closed or not between the...
These circuits can be used for different automatic light sensing projects including automatic night lamp, automatic street light controller, dark sensor circuits, etc. Automatic night lamp circuit using IC 555 and LDR An automatic night...
