Tube DIY Asylum

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Voltage Drop = Current Goes Up Somewhere Else...

Posted by Interstage Tranny on February 11, 2017 at 07:17:26:
First, choke input filter drops High Voltage B+, but allows more current draw than a cap input filter power supply.

Is your GZ34 testing strong ? Then, either the power tranny has limited current available, or your amp circuit is drawing more current than you anticipated. Have you checked the amp tubes ? If voltage goes down, current goes up somewhere. Ohm's Law always applies...

It might be beneficial for you to do some more research concerning Ohm's Law, Voltage Drops and inherent power supply losses. Google searches can help and link to some fantastic online calculators and specialty audio engineering sites. pspatial.com and sengpielaudio.com are only two great sites which have significant audio-related info. The math gets easier as you reread and apply the formulae. Electrical and electronic theory can be overwhelming, but only if you let it confuse you. Sometimes, simply remembering wording or a formula is all that is needed to understand the next "step" involved. Rereading often, and voila, the inner brain's lightbulb glows; then planning and devising can eventually become an instinct....