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BCD to DEC converter manual

This converter/decoder BCD to DEC is a simply but very powerful device. It decode from BCD data to one of eight. You can use it everywhere you have less wires than you need. You need only 4 wires and control up to 8 outputs. You can supply external relays over the BCD data wires. There is universal output driver. You can drive outputs by switching to GND or + Vcc voltage. BCD inputs include RF and high voltage protection.



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Applications
BCD to DEC
Schematic
PCB


Applications

Matrix table for inputs and outputs

bcd to dec converter matrix table


Connection example 1

- without external power voltage wire
- less wires
- for fat wires or smaller distance

BCD to DEC converter connection example by qro.cz hamparts.shop

Connection example 2

- with external power voltage wire
- one more wire
- BCD wires can use smaller voltage > 9 V
- for longer distance

BCD to DEC converter connection example by qro.cz hamparts.shop

Output 0 to 8

- compatible with MFJ antenna switch
- easy to set by jumper

BCD to DEC converter switch example by qro.cz hamparts.shop

Output driver

- universal outputs - switching to GND or + voltage
- easy to se by jumper
- easy to replace driver ULN (- out) / TBD (+ out)

BCD to DEC converter switch example by qro.cz hamparts.shop

Example with 6-to-1

- need four (five) wires between controller and BCD to DEC converter
- GND, (+12V) and three control wires
- output must be with TBD driver (+ out)

BCD to DEC converter with 6 to 1 antenna switch by qro.cz hamparts.shop

Example with 4-to-1

- need three (four) wires between controller and BCD to DEC converter
- GND, (+12V) and three control wires
- output must be with TBD driver (+ out)

BCD to DEC converter with 4 to 1 antenna switch by qro.cz hamparts.shop


BCD to DEC

BCD to DEC decoder converter by qro.cz hamparts.shop


Schematic

BCD to DEC converter schematic v0.1




PCB

BCD to DEC converter pcb v0.1



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