| Electronics > Beginners |
| Simplest circuit to connect/diconnect a wire. |
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| hgg:
Hi, What is the simplest way to connect or disconnect a wire in a DC circuit? Like a relay or SSR for example but its low voltage, it does not carry a lot of current and it can have any polarity. Thanks. |
| Brumby:
The simplest way is via a mechanical switch - but from your suggestions, it would seem you are after something that will operate from a control signal of some sort. You will need to specify what you mean by "low voltage" and "not a lot of current" - which I presume is the load you wish to control. You will also need to tell us what your control signal will be. Other things that will be helpful is required speed of operation, repetition rate, physical environment (water, vibration, temperatures, etc.) ... and possibly a whole lot more. Or you could simply tell us what you are trying to achieve (not how you think you can achieve it). |
| hgg:
Vibration would be 102Vdb max. |
| ebastler:
--- Quote from: hgg on April 19, 2019, 03:44:03 pm ---Vibration would be 102Vdb max. --- End quote --- Sorry, this is rather unclear. Both, the physical quantity and the unit you mention, come from the technical field of (mechanical) vibrations, not electrical quantities or signals. Does the wire you want to connect actually vibrate? I second Brumby's suggestion that you tell us what you want to achieve. |
| hgg:
I have a wireless doorbell. Its switch shorts Vcc with some other point in the circuit. I also have a PIR sensor with a 3.3V control signal. What I want is a circuit that when the PIR control signal is high, it will short Vcc with the other point on the circuit. Like pressing the button, so the wireless doorbell will chime with motion as well. |
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