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Drawing power from a rectified DC signal from a DC load?
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drummerdimitri:
I have a programmable DC electronic load and I'd like to draw power from a fully bridge rectified AC signal but I'm not sure if this may cause damage to the instrument.

Are they only able to draw current from stable DC voltages such as batteries, power supplies, capacitors etc or can they also do PWM, and rectfied signals?

Shock:
I'd suggest mentioning what electronic load you are using and how you are setting up your test circuit and what voltage it is etc. If you are also testing circuits to the point of failure you have to consider what happens when a component fails as well.
drummerdimitri:

--- Quote from: Shock on April 14, 2020, 08:12:21 pm ---I'd suggest mentioning what electronic load you are using and how you are setting up your test circuit and what voltage it is etc. If you are also testing circuits to the point of failure you have to consider what happens when a component fails as well.

--- End quote ---

The load is a Gwinstek PEL-3031e.

This is just a theoretical question. I have no use for it currently but would like to know if it is possible in case I ever decide to make my own power supply and would then load the full bridge rectifier after dropping down the voltage via a toroidal transformer.
Kleinstein:
The electronic load can get upset by the dropping voltage. Below some 0.2-1 V the load will not be able sink the current as planed. This can upset the regulation: either cause a drop out - turn off with a error message, more or less significant overshoot when the voltage comes back and probably some error in the average current.

It should not cause damage to the load - at least this is the plan and how it should be.

Things should better if the is a filter cap after the rectifier, just like i the real circuit.
Shock:
Minimum 1V according to the manual.
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