CS294 datasheet(1/4 Pages) CHERRY

Part #	CS294

Description	Ground Fault Interrupter

PDF	4 Pages

Scroll/Zoom	100%

Manufacturer	CHERRY [Cherry Semiconductor Corporation]

Direct Link	http://www.cherrycorp.com/

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1 / 4 page

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VFB

Signal

Common

Filter

20k

W

10k

W

Bias

Gnd

Detect

4.7k

W

50k

W

AmpOUT

+VS

SCR

Trigger

-

+

The CS294 is an AC outlet ground

fault interrupter controller IC. The

IC detects the presence of haz-

ardous 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 external

components. The completed inter-

rupter circuit can detect and protect

against both hot wire to ground

faults and neutral wire to ground

faults.

The CS294 is built on a 30V bipolar

process and is available in 8 lead

DIP packages.

Features

s Supply Derived from

AC Supply Ñ 24V

s Direct Interface to SCR

s Adjustable Sensitivity

s Grounded Neutral Fault

Detection

Package Options

Ground Fault Interrupter

CS294

Description

Block Diagram

1

VFB

Filter

Signal Common

Gnd

Detect

AmpOUT

+VS

SCR Trigger

8 Lead PDIP & SO Narrow

1

Rev. 1/20/99

Cherry Semiconductor Corporation

2000 South County Trail, East Greenwich, RI 02818

Tel: (401)885-3600 Fax: (401)885-5786

Email: info@cherry-semi.com

Web Site: www.cherry-semi.com

A

Company

¨

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