Output transformer

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noworrybeefcurry
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Output transformer

Post by noworrybeefcurry » Wed May 26, 2010 3:37 am

Why is their a tap off of your power transformers high voltage supply going directly to your output transformer?

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flemingmras
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Re: Output transformer

Post by flemingmras » Thu May 27, 2010 4:33 am

noworrybeefcurry wrote:Why is their a tap off of your power transformers high voltage supply going directly to your output transformer?
Rectifier tubes have one side of their heaters connected to the cathode internal to the tube. This means that one side of the 5 volt heater winding must go to the cathode, which is also where the 1st filter caps get connected along with the output transformer CT.
There's just that fine line between stupid and clever - Nigel Tufnel

noworrybeefcurry
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Re: Output transformer

Post by noworrybeefcurry » Thu May 27, 2010 6:30 pm

But shouldnt the tap off of your rectifier tube be off of the actual tubes plate?

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flemingmras
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Re: Output transformer

Post by flemingmras » Thu May 27, 2010 10:39 pm

noworrybeefcurry wrote:But shouldnt the tap off of your rectifier tube be off of the actual tubes plate?
The high voltage windings go to the plates yes while the electrons flow from the center tap, up through the amplifier circuitry, then to the cathode of the rectifier tube, and from the cathode to each plate and return back to the transformer's outer windings. But something has to run the heater in order for it to work, hence the 5 volt winding.
There's just that fine line between stupid and clever - Nigel Tufnel

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