RV4145AN

更新时间： 2024-11-22 22:23:23

品牌	Logo	应用领域
飞兆/仙童 - FAIRCHILD		断路器光电二极管 PC
页数	文件大小	规格书
11页	369K
描述
Low Power Ground Fault Interrupter

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RV4145AN 数据手册

www.fairchildsemi.com

RV4145A

Low Power Ground Fault Interrupter

Features

• No potentiomenter required

• Direct interface to SCR

• Supply voltage derived from AC line – 26V shunt

• Adjustable sensitivity

• Grounded neutral fault detection

• Meets U.L. 943 standards

• 450µA quiescent current

• Ideal for 120V or 220V systems

Description

The RV4145A is a low power controller for AC outlet

ground fault interrupters. These devices detect hazardous

grounding conditions, such as equipment (connected to

opposite phases of the AC line) in contact with a pool of

water and open circuits the line before a harmful or lethal

shock occurs.

Contained internally are a 26V zener shunt regulator, an op

amp, and an SCR driver. WIth the addition of two sense

transformers, a bridge rectiﬁer, an SCR, a relay, and a few

additional components, the RV4145A will detect and protect

against both hot wire to ground and neutral wire to ground

faults. The simple layout and conventional design ensure

ease of application and long-term reliability.

Block Diagram

RV4145A

10K

+Input

Op Amp Output

10K

(+26V)

REF

6.5V

(+13V)

Ground

SCR Trigger

4.7K

65-4145A-01

REV. 1.0.3 3/6/02

12 3 4 5 6 7...11

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