EDN

Match modular EMI AC line filters to application’s DC supply needs

For AC mains-powered equipment, it’s common practice to use a modular AC line filter fitted either integral to a connector or as a chassis mount part, particularly in professional environments such as ...
Electronic Design

Radical Approach: Active EMI Filter IC Shrinks Higher-Power AC-DC Supplies

A new IC-based approach to EMI filtering in ac-dc power subsystems dramatically cuts inductor size and offers other benefits as well. The nature of the EMI problem in ac-dc supplies and its ...
Electronic Design

IC Monitors AC or DC Power Inputs with 0.1% Accuracy

Some applications require the monitoring of power applied to a system. Microchip Technology addressed this need with the MCP39F511A, a highly integrated, single-phase power-monitoring IC intended for ...
EDN

AC Power Monitor

This AC Power Monitor continuously watches the AC power line voltage for both under-voltage and missing cycles. When it detects a total of 5 or 6 consecutive missing half-cycles (50mS, 50/60HZ), it ...