Switching ac power on and off has been a challenge since Edison and others started switching power more than 125 years ago. Now, a solid-state relay (SSR) uses a patented zero-voltage crossing ...

For one-off projects or prototyping, it’s not too hard to find a wall wart or power supply to send a few joules of energy from the wall outlet to your circuit. Most of these power supplies use a ...

A zero crossing SCR controller is used to regulate the power delivered to a resistive load. The controller uses two Silicon Controlled Rectifiers (SCRs) connected back to back in opposite directions ...

This report describes circuits employing CAPZero that provide zero crossing/line frequency and AC Loss information whilst also providing the normal CAPZero X capacitor discharge function with no ...

Rohm recently introduced a low-power 600V-tolerant zero-crossing detection chip, intended to cut energy wastage in home appliances by reducing sense current through the high voltage monitoring ...

Two new patented circuits control ac power to resistive and reactive loads with minimal EMI. They are applicable to single and multiple ac phases and varying ac frequencies. Switching ac power on and ...