Hi,
I have used this circuit to sense 220VAC RMS with an accuracy of 1 Volt with pseudo Isolation. The AC ground and DC grounds were 'isolated' except through the internals IC.
Right now I want to measure DC voltage, I am assuming that since there was no common ground for AC and DC previously and yet I was able to get a nice sine wave on the output I could use this circuit with a 48V DC source.
I tried to simulate this to verify but the results are rather strange / am unable to do it.
The DC Voltage sensing works fine as in the attachment, however if I increase the R to say 10000MEG (or remove it to create isolated sources) the output remains high for a DC sweep of V2 from 1 to 60.
My question being :
a) Will I be able to simulate with reliable accuracy or should I bread board and check (currently equipment is N/A)
b) Will this work in theory?
c) Any modifications suggestions?
Regards
I have used this circuit to sense 220VAC RMS with an accuracy of 1 Volt with pseudo Isolation. The AC ground and DC grounds were 'isolated' except through the internals IC.
Right now I want to measure DC voltage, I am assuming that since there was no common ground for AC and DC previously and yet I was able to get a nice sine wave on the output I could use this circuit with a 48V DC source.
I tried to simulate this to verify but the results are rather strange / am unable to do it.
The DC Voltage sensing works fine as in the attachment, however if I increase the R to say 10000MEG (or remove it to create isolated sources) the output remains high for a DC sweep of V2 from 1 to 60.
My question being :
a) Will I be able to simulate with reliable accuracy or should I bread board and check (currently equipment is N/A)
b) Will this work in theory?
c) Any modifications suggestions?
Regards
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