Heyboer HYPT100 bias voltage?

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Heyboer HYPT100 bias voltage?

Post by freakshow__ » Fri Nov 20, 2020 4:38 pm

Hi all

I am building a 100 watt super lead and am trying to use some spare transformers I have. For the PT I have a Heyboer HYPT100. The question I have is: There is a 45volt tap on the secondary, is that what I use for the bias circuit? Aren't super leads supposed to have 100volts for the bias?

Apparently I can't attach the drawing so here's the wire color code:

Secondary color code:

Red 350Vac @ 360ma rms
Red/wht 320V
Blue/Red 45V
Red/Yel CT 0V
Red/wht 320V
Red 350V
Green 3.15Vac @ 7.5 Amps rms
Green/Yellow 0V
Green 3.15V

Thanks for any help!

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Re: Heyboer HYPT100 bias voltage?

Post by neikeel » Wed Dec 09, 2020 11:36 am

Yes they are supposed to be 95vac
You could use it for your Superlead if you omit the 27k dropper before the diode
You will need to change the type of rectifier you use, you will use the two parallel pairs of diodes but not ground the diodes as you would in the bridge type.
Look at the 50w and JTM45/100 recifiers as examples of what you will need to do.

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