Resistor at center-tap

Tom Bavis All Messages By This Member #318 Edited Topic locked, so I'll start a new one. A resistor inserted at the center tap of a full-wave rectifier acts the same as adding two resistors of the same value, one in series with each diode, and could be modeled as extra resistance in the secondary. Of course the dissipation? is doubled (RMS current is 1.4 times what is modeled).? This could also be used provide a negative bias voltage, though it's not much different from cathode bias.? Often called "back bias".? Definitely out of PSUD territory...
Ian Eales Member Profile All Messages By This Member #319 开云体育 Is there some reason you can't lower the input voltage. I built this two stage bucker to lower our 120v+ to ≈117 is case the link is stripped. - Ian On 6/30/2024 06:46, Tom Bavis wrote: toggle quoted message Show quoted text [Edited Message Follows] Topic locked, so I'll start a new one. A resistor inserted at the center tap of a full-wave rectifier acts the same as adding two resistors of the same value, one in series with each diode, and could be modeled as extra resistance in the secondary. Of course the dissipation? is doubled (RMS current is 1.4 times what is modeled).? This could also be used provide a negative bias voltage, though it's not much different from cathode bias.? Often called "back bias".? Definitely out of PSUD territory...

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