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Old 26th Apr 2019, 11:03 am   #11
TrevorG3VLF
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Join Date: Apr 2011
Location: Matlock, Derbyshire, UK.
Posts: 1,288
Default Re: Rectifier

Andy #9
The resistor voltage drop will be higher than what Mr Ohm would say because the current comes in pulses. The resistor dissipation would also be higher than that calculated from a steady current.

The meter voltage error will depend on the meter resistance and the source resistance. I would think that there would be very little error when measuring the HT voltage with a low source resistance.
Some cheap digital meters have an input resistance of 1M which is the lower than an analog meter 20k/V on the 1kV range. Posher digital meters have an input resistance of 10M. The error can be calculated if you are so inclined.
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