Electronics > Beginners
Single momentary button relay selector
Spemo:
Hello,
I am trying to figure out a way how to build a circuit.
My goal is to have a single momentary switch to select or "scroll" trough lets say 6 relays -
so if I push the button , it turns off the first and on the second relay , press it again, it turns the second off and the third on, and when it reaches the last one to start over at the first one (push -> 6th off , 1st on).
Now I'm looking to do this with relays only, I don't want to use microcontrollers or ICs or anything like it. just relays, diodes, maybe capacitors and wires.
I don't have any problems building this with 200 relays just to do this.
The relays I'd like to use are simple 8 pin non latching relays with 2 contacts ( I put an image of the relay configuration into the attachment )
I hope this is somewhat understandable
Thank you
Spemo
tpowell1830:
Hi Spemo, welcome to the forum. I will think about the electrical logic to do this, it will be a bit complex. Is this a homework assignment? What will this be used for?
EDIT: Your relay is a double-pole, double throw, or known as a DPDT.
Spemo:
Hello tpowell,
this is not a homework assignment, just a small project for myself, so there is no time limit. The use for this, I don't really know yet, maybe some kind of counter or something like that...
This relay logic just fascinates me, I mean I mostly understand transistors and such, but I find a lot of beauty in relay logic... You know you push a button and you hear the circuit do its thing. And I do have a small history of blowing up sensitive electronics - so I try myself in this electric-mechanical parts.
Thank you for the information on the relays.
Gregg:
The first thing that comes to my mind is a stepping relay kind of like this: https://www.ebay.com/itm/NOS-Olson-10-Position-Electric-Stepping-Relay-SW-843/292783669968
Old dial phone systems and some other old style equipment use them, maybe you can find a surplus outlet near you.
Spemo:
this looks interesting - quite pricey though and I cannot find anything in that direction with shipping to germany... That's why I thought maybe there is a way to use DPDT relays
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