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 ...

2. Traditional and simplified SPD circuits The SPD under consideration is installed on the single-phase AC power supply lines to protect the electronic system against lightning overvoltage, as shown ...

Ac power-control modules essentially consist of trigger circuits which control load current, usually with a triac or SCR. Two switching methods are often used to control ac power: phase control ...

Understand how to specify the proper AC or DC motor for a machine design. Integrate the motor to a machine, based on analysis of motor equations for voltage, current, torque and speed. Implement the ...