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IES5521A Simple Zero Crossing Triac Control Circuit

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Description

ing and F b ab ing IC’s fo ver ro Integrated Electronic Solutions 35 ars Ye Simple Zero-Crossing Triac Control Circuit with Adjustable Time-out .
The IES5521A is a derivative of the OM1654A, but offering the extra safety feature of a nominal 1 hour time-out.

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Datasheet Specifications

Part number
IES5521A
Manufacturer
IES
File Size
968.21 KB
Datasheet
IES5521A_IES.pdf
Description
Simple Zero Crossing Triac Control Circuit

Features

* Time-out function stops triac operation after a set time.
* Reset time-out by turning mains supply off and on.
* Low external component count
* Constant ON cycle time, with proportional OFF time
* All ON cycles consist of an integral number of mains cycles

Applications

* The time-out function will stop the triac operation and thus prevent power from being applied to the heating elements. Time-out can be accurately controlled from the AC supply frequency for a period of 1 hour (60Hz, or 71minutes at 50Hz), or can be adjusted by adding external resistor and capacitor

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