Hi, can somebody explain to me in very simple terms the following:- Push to make switch.- Momentary-actionThanks in advance,CM.

A 'push to make' switch is the type used for a door-bell or similar.When you push it the switch contacts close, when you release thecontacts open again.A 'momentary-action' switch is probably different things to differentpeople. It *could* (to some people) be the same as a 'push to make'switch. I.e. it's 'momentary' for the length of time you press thebutton. Alternatively (and I think this is what I'd go for) when youpress the button the switch closes momentarily and then opens againeven if you keep the button depressed. You then have to release thebutton and press it again to get another momentary closure.Note that I have used the terms 'contacts close' and 'close/open' aboveon the basis that the switch has 'normally open' contacts and switchesa circuit on when you actuate it. It's perfectly possible for thingsto be the other way about (i.e. you press to open a contact) or evenfor the switch to have multiple sets of contacts which do lots ofdifferent things for the period of...

Can anyone explain this...

Dec 09, 2004 21 Replies

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Lurch 21 years ago

On Mon, 13 Dec 2004 23:04:11 +0000 (UTC), "Peter Stockdale" strung together this:

Hmmm, that's the problem with usenet.

Erm, no. 0/10 ;-)

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Dave Plowman (News) 21 years ago

A special switch added *between* two way ones - it's of a different design. It has four terminals rather than the three of a two way, which is why it's so expensive. ;-)

You may add as many as you want - but the circuit must have a two way one at either end. Diagram below.

Two way switching with optional intermediate.

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L1 L1 0===========0 0===========0============= Line | \ / | C 0================================O C \ / \ / 0===========0 0===========0============= Switch return L2 Optional L2 Intermediate

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