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UAA145

Phase Control Circuit for Industrial Applications

Description

The UAA145 is a bipolar integrated circuit, designed to

provide phase control for industrial applications. It

permits the number of components in thyristor drive

circuits to be drastically reduced. The versatility of the

device is further enhanced by the provision of a large

number of pins giving access to internal circuit points.

Features

D

Separate pulse output synchronized by mains

half wave

Applications

D

Output pulse-width is freely adjustable

D

Phase angle variable from >0擄 to <180擄

D

High-impedance phase shift input

D

Less than 3擄 pulse symmetry between two half-cycles

or phase of different integrated circuits

D

Industrial power control

D

Silicon controlled rectifier

Package:

DIP16 (special case)

Block Diagram

9

om

po

ne

6

D

Output pulse blocking

nt

s

Pulse inhibit

Puls

generator

11

Voltage

synchronisation

Gm

bH

16

Channel

selection

Pos. / Neg.

half wave

2

PHW

10

Ad

ro

nic

C

Ramp generator

7

Comparator

S

R

Memory

14

NHW

鈥揤

Ref

15

Supply

+15

鈥?5

13

3

1

8

95 11298

PHW = Positive half wave

NHW = Negative half wave

Figure 1. Block diagram

TELEFUNKEN Semiconductors

Rev. A1, 29-May-96

1 (11)

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