My project is connected to one CT (current transformer) which is for two purposes, one to charge a capacitor, and the other to take current readings. In the last version of the circuit I had a DPDT relay to switch the contacts between the two options. However, I now need a much reduced power usage method of switching.
The 'switch' must let AC through so can't be any form of diode or standard transistor, plus it must have very low on resistance to prevent the current measurements (voltage across a burden resistor) being distorted. I thought a triac may do the trick, but the few common ones I have are for vastly more voltage, so I don't think they will work.
Does anybody have any suggestions what options I could try?
The 'switch' must let AC through so can't be any form of diode or standard transistor, plus it must have very low on resistance to prevent the current measurements (voltage across a burden resistor) being distorted. I thought a triac may do the trick, but the few common ones I have are for vastly more voltage, so I don't think they will work.
Does anybody have any suggestions what options I could try?
