I require such a device which connects two wires, but does not short them.
When the device is 'enabled' by another input (say +5V), then it connects the two wires an they are shorted.
So in a sense does a device exist which allows me to connect and disconnect two wires depending on an external input
It all depends on the frequenct of your 5V control voltage... If it is a once ever few seconds....and switching speed does not matter - Use a relay.
If the contol voltage is of high frequency, Use ICs mentioned by techie or you may also use an optocoupler (MCT2E etc.) if the risetime and fall time are not important and the isolation voltage is too large.
SCR may also be used...(don't know much about them)
hi
you can use analog switch if you are dealing with signal current .as for using mosfets take care it must not have a diode between drain and source if your signal is bipolar.
regds
I require such a device which connects two wires, but does not short them.
When the device is 'enabled' by another input (say +5V), then it connects the two wires an they are shorted.
So in a sense does a device exist which allows me to connect and disconnect two wires depending on an external input
Use an optoMOS (like ASSR-4110 or ASSR-1510 dependong on voltage current ratings). It is a solid state relay activated by an LED (for 5V). I would say it is very reliable and convenient than using a MOSFET alone or EMR.
I think a transmission gate will do that work.
The transmission gate can transfer analog or digital signal from input to output when its control input is enabled. And if the control input is disabled, its input and output are disconnected.
I require such a device which connects two wires, but does not short them.
When the device is 'enabled' by another input (say +5V), then it connects the two wires an they are shorted.
So in a sense does a device exist which allows me to connect and disconnect two wires depending on an external input
Electromechanical relays are suitable if the frequency or the switching speed is not significant, otherwise use MOSFETs as switch (the circuit design may depend upon the current used in your problem)