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BCD to DEC TTL converter manual

This converter/decoder BCD to DEC is a simply but very powerful device. It decode from BCD data in TTL logic to one of eight. You can use it everywhere you have less wires than you need and also with BCD (TTL) output devices (like microHAM). You need only 4 wires and control up to 8 outputs. 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 of control cables and power supply

- with external power voltage wire
- one more wire
- BCD wires can use smaller voltage 2.6 to 9 V
- for longer distance

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

Example with 4-to-1

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

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

Example with microHAM devices

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

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

Example with 6-to-2 microHAM devices

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

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


BCD to DEC

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


Schematic

BCD to DEC TTL version converter schematic v0.1




PCB

BCD to DEC TTL version converter pcb v0.1



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Simply but powerful converter/decoder from BCD data to one of eight. You can use it everywhere you have less wires than you need.
Simply but powerful converter/decoder from BCD data in TTl logic to one of eight. You can use it everywhere you have less wires than you need.
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