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Fig. 1. Simplified schematic of OPT-821A internal circuits.

An external power supply 8~30V is not required if the input port of the PC
card is equipped with pull-up resistors (all types of TEDIA cards are
equipped with pull-up resistors).

Manufacturing, sales office, service center and technical support: 

TEDIA spol. s r. o.
Zabelska 12, 31200 Plzen, Czech Republic

phone/e-mail:

https://www.tedia.eu/contacts

address:

SV1-15

SV1-3

SV1-1

SV1-16

K1-6

K1-9

K1-5

K1-1

SV1-2

SV1-4

5V

SV2-1

SV2-2

6K0

4K7

6K0

4K7

6K0

4K7

8~30V

OPT-821A

User Guide

(further information available at http://www.tedia.eu)

document revision: 02.2013, © 1994-2013 TEDIA

®

 spol. s r. o.

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