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elisey4742018-12-16 16:15:19
Electronics
elisey474, 2018-12-16 16:15:19

Is there a toggle switch with a button effect?

I am looking for a tumbler, but so that it does not close the contacts, but, like a button, gives a short-term impulse. Is there something like that?

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Viktor, 2018-12-17
@nehrung

After some clarifications, it became clear what you need. I think this can be done in two ways.
1. Refine the toggle switch. But not everyone will succumb to such refinement. I have dealt a lot with domestic P2T toggle switches, produced in many modifications, incl. and with a return (button effect) both in one and both directions:
Modifications with a return have return springs near the lever (their ends in such modifications should stick out of the holes visible near the nut), and they also have a different form of a swinging movable contact . By giving it a different twist, you can achieve what you want. But... it's not the same toggle switch as in your link, it's not as pretty.
2. The effect of an impulse can be obtained in circuitry by switching a capacitor of the required capacity with a toggle switch. The PWR-SW pins on the motherboard where the switch is connected are a common wire (-5 volts) and a signal circuit connected to +5 volts through a resistor of several kilohms. It is necessary to connect a capacitor with a capacity of several hundred microfarads to these outputs with your toggle switch. When it is initially discharged, such a connection will create the effect of a short circuit for a short time (fractions of a second), then the capacitor will charge, which is equivalent to opening a button. This is what we need. But by the next turn on, the capacitor must be discharged again. This can be achieved again in two ways. Firstly, by connecting a resistor of several hundred kilo-ohms to it in parallel (with such resistance it will not interfere with regular processes, and after opening the toggle switch it will ensure discharge,
Secondly, in the opposite position of the toggle switch, this capacitor can be connected to a resistor of 100 ... 200 ohms (then its discharge will occur very quickly): Is it good
?

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Alexander, 2018-12-17
@Fox_Alex

Or you can simply disassemble the toggle switch and use only the upper half (screw part and lever), and put either a button or an optocoupler with a flag on the bottom. I have not seen ready-made toggle switches with a return, if they exist in nature, they are quite rare in ordinary radio components.

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