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Questions about tubes and gear that glows. FAQ

You can't know that for sure.

It is likely true that he will be fine with a 12uf to 15uf input cap but neither you or I can know that for sure without first knowing the total current draw, the voltage ratio and DCR of the power transformer windings and the voltage.

The 5r4 has a peak repetitive current rating of .65 amps.

Here's an example where a 4uf cap is too large and the peak repetitive current rating is being exceeded 120 times a second (60 times per second, each diode).


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  • You can't know that for sure. - Tre' 16:16:24 01/26/17 (0)


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