Re: Converting 0-2200Vac to 0-10VDC


"Devendra"

I am designing a circuit which will convert a 0 to 2200Vac, 50/60Hz
voltage to 0-10VDC signal.

Designing a transformer with 2200Vac primary and 10Vac secondary is
one solution, but the transformer will be very bulky!!

Any other good ideas are welcome. Please help!


** You can buy 100:1 ratio scope probes that will safely divide such
voltages down to suit a 1 megohm input.

So, maybe use a 100:1 probe, followed by 1M resistive ladder attenuator then
fet op-amp buffer and a nice " rms to DC" converter IC from Analog Devices
like the AD636.

Long as your AC voltage " 0 " is securely linked to earth, it should be
quite safe.


........ Phil


.

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