Editor's Note: Here's another take on the transformerless AC line power supply, which finds use in some well-insulated, low-power devices. Our technical reviewer pointed out that C ac should be an ...

Check out this interesting wideband AC millivoltmeter circuit from 1990. The simple design features 12 ranges, decent accuracy, 200 µV accuracy, and a frequency range from 20 Hz to more than 2 MHz.

The previous tutorials featured resistors in direct current (DC) circuits wherein the voltage and current have been assumed to be of constant polarity, flow and direction. The voltage, current and ...

Understanding the fundamentals of voltage is essential for grasping how electric circuits function — see our full explanation of voltage. The strength of this magnetic field increases when the ...

A basic full-bridge inverter built to demonstrate the conversion of DC (battery) power into AC (alternating) power using electronic switches and the principles of Pulse Width Modulation (PWM).

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