Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: joesatch on June 09, 2022, 10:13:00 pm

Title: Help with AS-05T200 PT rectification
Post by: joesatch on June 09, 2022, 10:13:00 pm

This toroidial PT is outputting 210vac into the FWB and i'm measuring 210VDC on the rectifier out tap. I've never seen this. The voltage rectified is the same. What's wrong here? Shouldn't it be much higher? I have the reservoir cap disconnected.

Title: Re: Help with AS-05T200 PT rectification
Post by: PRR on June 09, 2022, 10:15:58 pm

You have the reservoir cap disconnected.

Try connecting it.

Title: Re: Help with AS-05T200 PT rectification
Post by: joesatch on June 09, 2022, 10:16:16 pm

i think because the cap is disconnected, the peak voltage isn't being sustained. I' guessing this is the issue

Title: Re: Help with AS-05T200 PT rectification
Post by: PRR on June 09, 2022, 10:18:23 pm

Try connecting it.

Title: Re: Help with AS-05T200 PT rectification
Post by: joesatch on June 09, 2022, 10:27:35 pm

ok i formed the cap. it's reading 286vdc. All good. I knew i forgot something. Thanks!