Hoffman Amplifiers Tube Amplifier Forum
Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: joesatch on March 13, 2025, 10:20:29 am
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PT repurpose. I want to take the yellow taps from this PT and run them into a rectifier then to filtering and a regulator for 12vdc heaters/relay. The yellows appear to share the CT of the HT reds. Would i use a 2-phase rectifier on the yellows (since the CT is grounded)? In this diagram they use a bridge rectifier but they are getting +15vdc and -15VDC out of it.
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Would i use a 2-phase rectifier on the yellows (since the CT is grounded)? In this diagram they use a bridge rectifier but they are getting +15vdc and -15VDC out of it.
It's drawn like a bridge rectifier but really it's a pair of two-phase rectifiers. So yeah, you only need one.
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can you estimate what this yellow tap will put out in amps? I need at least 1 amp
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can you estimate what this yellow tap will put out in amps? I need at least 1 amp
You've not provided any info to base an estimate on.
It's the same as asking how long the piece of string in your pocket is :icon_biggrin:
Maybe start with where you've got this transformer from?
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X60 amp
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can you estimate what this yellow tap will put out in amps? I need at least 1 amp
Hmm, I doubt it. That winding was only designed for a few opamps, probably a few hundred milliamps at most, same as the B+
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ya project scrapped. not enough current there.