| rfarn |
I'm looking for a simple switching circuit which, when power is supplied momentarily, an "electronic" switch would be closed.
I.E. An electronic version of a basic switch which is closed by momentarily applying power and stays closed after the power is removed. Idealy, there would be a second signal which would open the switch.
Thanks |
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| rfarn |
| Kind of. A relay only closes when there is power supplied. Looking for one that will "change state" when power is supplied, and keep that state (opened/closed) when the power is removed. Also looking for a strictly electronic, not electro-mechanical solution. |
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| dave_gerecke |
Hello rfarn, what kind of voltage and current capacity are you looking for? If it is low you could probably use a regular momentary contact switch with a flip-flop. The flip-flop, per its name will switch output states when it gets an input pulse. Usually they work off of logic voltages, 5vdc (TTL), 3vdc (LVTTL).
Peace,
Dave |
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| rfarn |
| That might work. Just looking for a simple A/B switch to change sources on a sterio. |
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| dave_gerecke |
Hello rfarn, the flip-flop would work for providing a latching control signal, but you would still need relays to actually switch the audio signal. In the application you are suggesting, reed relays would work.
Peace,
Dave |
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| AndrewT |
| there are a few latching switch circuits in the Forum. |
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