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Simple (8pin) signal splitter

blueneon

New Member
Hi y'all
I have been thinking about making one signal splitter that is basicly doing the same as a VGA splitter, but with less electronics and pins.

I have 2 separate cables A and B with 8pins each.
Each cable should be splitted to two outputs, at best with a simple button or switch.
So 2xIN to 4xOUT (but as said, two separate circuits because the signals from A and B cable can't be mixed together)

Does anyone have any experience with this type of switch/splitter or any advice with what should I start with?

Tnx in advance
 

rjenkinsgb

Well-Known Member
Most Helpful Member
Is it a splitter, that may connect both outputs at the same time, or is it purely a A/B switch, so the signal never connect to both outputs at the same time?

A simple switch is easy, literally a suitable switch in a casing of some sort with connectors or flying leads.

The hard part is finding a switch with enough contacts at a reasonable price!


A splitter, that may drive two outputs at the same time, may need to be rather more complex & how it works depends on what is being passed through it:
What type of signals are they? What power source, impedance, voltage, load etc.

(Some things can be directly split and connect to two loads, others needs some form of receiver at the input and output drivers to pass on the signals).


Possible switches for the simple type - you need eight pole (or seven pole if ground/0V is unswitched, double throw - 8P2T or 7P2T, in the abbreviated naming:

See "(SWR) 1418" about a third on the way down this page - an "8P2T" configuration one, so a changeover for up to eight signals - though any ground would likely be unswitched>


To make one up from new parts, you would need two of these four-pole wafers:

and a mechanism to mount them on:

Or a similar switch / parts from other suppliers.


Alternatively, if the signals are all low voltage and low current, you may be able to use a cheap 9 pin RS232 selector switch and just make adapter cables to the type of connectors you need?

 

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