Hoffman Amplifiers Tube Amplifier Forum

Other Stuff => Solid State => Topic started by: FREYES_7 on October 15, 2025, 04:40:36 pm

Title: SS rectifier with parallel caps
Post by: FREYES_7 on October 15, 2025, 04:40:36 pm
Hello all,

Been looking into ss rectifiers and found the topology attached in one of master blencowe's book,

I'm wondering why doesn't (or does?) the caps short circuit the PT secondary as shown in the poorly drawn schematic?

Wisdom will be well appreciated

(http://)
Title: Re: SS rectifier with parallel caps
Post by: shooter on October 15, 2025, 05:18:32 pm
they "bypass" or "filter out" transient spikes from the diodes.   when SS switches state, the electrons get overly excited n tend to overshoot their mark  :icon_biggrin:


 hunt up your favorite diode data sheet n read about transients
Title: Re: SS rectifier with parallel caps
Post by: SEL49 on October 15, 2025, 05:22:40 pm
Capacitors have reactance, ie, resistance to AC voltage. For example, a .01µF cap has a resistance of 265KΩ at 60Hz. Or a .047µF cap has a resistance of 56K at 60Hz. Making sense yet?