Simple variable frequency oscillator circuit

The circuit utilizes a NE553 automatic light sensor composed of 55 groups, allowing lights to turn on when individuals are present and turn off when they leave. The power supply includes VD1, vS, and C, with a 12V DC...

The following circuit diagram illustrates the application of the LM117 as a high current adjustable regulator. The LM117 is capable of supplying more than 1.5A. The LM117 is a popular adjustable voltage regulator that is designed to provide a stable...

This infrared detector circuit utilizes a passive infrared detector component, PID20, which converts heat radiation into electrical impulses. The output voltage of the PID20 increases when an object approaches, provided that the object is warmer than the surrounding environment....

This stable oscillator circuit exhibits less than a 1 Hz frequency change over a VDD range of 3 to 9 volts. Stability is attributed to the use of MOSFET devices and stable capacitors. The described oscillator circuit is designed to...

This circuit diagram of a UPS is designed for use with cordless telephones that cannot operate during a power failure. Since the UPS is intended solely for telephones, its output power is limited to 1.5W. This UPS circuit is...

Ideal for operating 3 to 24V DC existing on-circuit lamps. This circuit was designed to provide continuous light for lamps already wired into a circuit. The circuit is intended to facilitate the operation of existing DC lamps that are integrated...