momentary switch, multiple functions?

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543sp

Member - Posts: 3

Joined: June 28, 2010

Location: United Kingdom

Posted: June 28, 2010 at 6:00 AM / IP Logged

make a Momentary switch have multiple functions using only relays to power 12v actuator for example first push first relay powered second push first relay off second relay on third push second and first relays off third relay on and so forth then with a second momentary switch perform the sequence in reverse

thanks for help in advance

i am an idiot

Platinum - Posts: 13,669

This member consistently provides reliable information

Joined: September 21, 2006

Location: Louisiana, United States

Posted: June 28, 2010 at 9:27 AM / IP Logged

I know it is not a momentary pushbutton, but this is the only thing that I can think of that may meet your criteria.

http://www.radioshack.com/product/index.jsp?productid=2062536

howie ll

Pot Metal - Posts: 16,466

Joined: January 09, 2007

Location: United Kingdom

Posted: June 28, 2010 at 4:54 PM / IP Logged

Talk about old school Mr. I we were wiring up demo stands with those in 1973.

i am an idiot

Platinum - Posts: 13,669

Joined: September 21, 2006

Location: Louisiana, United States

Posted: June 28, 2010 at 6:49 PM / IP Logged

I was adding crystals to CB radios with that switch at about that time. From what I read from his requirements, that switch will be perfect, short of the bling factor he may want.

oldspark

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Joined: November 03, 2008

Location: Australia

Posted: June 28, 2010 at 8:21 PM / IP Logged

I was dimming fluorescent lights around then....

543sp

Member - Posts: 3

Joined: June 28, 2010

Location: United Kingdom

Posted: June 29, 2010 at 3:14 AM / IP Logged

so by the sound of it, it can be done but how is it done ?

oldspark

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Joined: November 03, 2008

Location: Australia

Posted: June 29, 2010 at 3:37 AM / IP Logged

By adding together successive functions - latching, flip-flops etc.

What can be done in modern "logic" circuits can be done with relays - it's just that few people do it that way any more (relays replaced by valves replaced by transistors replaced by VLSI (chips etc); these days PICs else older discrete logic chips).

Logic Tables (Boolean Algebra; state tables/diagrams) help the circuit simplification, but might drive you nuts in the process. (It did me!)

543sp

Member - Posts: 3

Joined: June 28, 2010

Location: United Kingdom

Posted: June 29, 2010 at 5:28 AM / IP Logged

a diagram would be of good use

howie ll

Pot Metal - Posts: 16,466

Joined: January 09, 2007

Location: United Kingdom

Posted: June 29, 2010 at 11:26 AM / IP Logged

Wouldn't these diagrammes be chargeable as they are your intellectual property Mr. Oldie?

oldspark

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Joined: November 03, 2008

Location: Australia

Posted: June 29, 2010 at 11:40 AM / IP Logged

LOL!

And here I thought it was someone asking the OP for diagrams....

At this stage I wouldn't charge for the IP, but I'd charge for tuition!

I could post a diagram of a PIC.....

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momentary switch, multiple functions?

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