CS294 - Cherry Semiconductor Corporation

CS294 Ground Fault Interrupter

The CS294 is an AC outlet ground fault interrupter controller IC. The IC detects the presence of hazardous grounding conditions and open circuits the AC line before a dangerous shock can occur. The CS294 contains an operational amplifier, an SCR driver and a 24V zener shunt regulator. Two sense coils, a bridge rectifier, a relay and an SCR are required as ex.

Features

s Supply Derived from AC Supply Ñ 24V s Direct Interface to SCR s Adjustable Sensitivity s Grounded Neutral Fault Detection Block Diagram AmpOUT +VS VFB 20kW Signal Common 10kW Filter Bias + 50kW + SCR Trigger + 4.7kW Package Options 8 Lead PDIP & SO Narrow VFB 1 Filter Signal Common Gnd Detect AmpOUT +VS SCR Trigger Gnd Detect Cherry Semiconductor Corporation 2000 South County Trail, East Greenwich, RI 02818 Tel: (401)885-3600 Fax: (401)885-5786 Email: [email protected] Web Site: www.cherry-semi.com Rev. 1/20/99 1 A ¨ Company CS294 Absolute Maximum Ratings Operating Junctio.