DC Motor Control Motor light and power control circuits

This circuit can power on or off various electric and electronic devices such as ADSL modems, personal computers, water boilers, water pumps, garage doors, lights, and more. Additionally, it allows for monitoring the status of eight switches, which can...

As circuit power supply voltages decrease and green energy trends gain popularity, designers should re-evaluate circuits that continuously consume power to reduce overall system power consumption. One such circuit is the "normally-ON" circuit, which can now be redesigned with...

This circuit controls the liquid level in a tank using a bang-bang controlled electrical pump. The liquid level is measured by a capacitive level meter. The first inverter functions as a capacitance-to-frequency converter, operating as a Schmitt oscillator, where...

These units can be useful as a short-range, single-channel remote-control. When the pushbutton in the transmitter circuit is briefly activated, the LED D1 in the receiver illuminates and an optional beeper or relay can be operated. Circuit operation is...

This is a car alarm simulator that uses an LED as a simulation output. This simple circuit can indicate whether a car is running or not by detecting the voltage difference when the car is on or off. This...

In this circuit, a 2-MHz clock is divided by eight in U1, resulting in a stable 250-kHz carrier. Q1 and Q2 buffer the clock, providing a low-impedance drive for operational amplifier U4, which functions as a high-gain amplifier and...