Hi
I have a pulsed signal of a few V lasting 300uS superimposed on a 220 VAC 60Hz .
The pulses are always happening when VAC is passing -3V & rising ( we are generating them accurately)
I want to extract this pulse voltage from AC carrier with a DAQ.
For accuracy reason ( the pulse shape is important for the application) high pass filters are not considered.
I am considering using some kind of switch between the AC line and the daq input.
the switch will be open most of the time as the DAQ requirement is +/-10V and closed when the AC voltage is within this range.
This means that this switch must be bidirectional with on/off capabilities.
The daq impedance is high so current is low (mA range)
My question: what switch technology could be recommended for this application?
Thanks
JF
I have a pulsed signal of a few V lasting 300uS superimposed on a 220 VAC 60Hz .
The pulses are always happening when VAC is passing -3V & rising ( we are generating them accurately)
I want to extract this pulse voltage from AC carrier with a DAQ.
For accuracy reason ( the pulse shape is important for the application) high pass filters are not considered.
I am considering using some kind of switch between the AC line and the daq input.
the switch will be open most of the time as the DAQ requirement is +/-10V and closed when the AC voltage is within this range.
This means that this switch must be bidirectional with on/off capabilities.
The daq impedance is high so current is low (mA range)
My question: what switch technology could be recommended for this application?
Thanks
JF