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DHT driver for triode wired SE EL84, 6V6 or EL34
DHT driver for triode wired SE EL84, 6V6 or EL34
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Old Today, 05:47 PM   #471
euro21 is offline euro21  Hungary
diyAudio Member
 
Join Date: Sep 2004
Location: Budapest
DHT driver for triode wired SE EL84, 6V6 or EL34
If you compare -any of them- to 10k internal resistance, it's -almost- negligible ... but across this resistor flowing the filament current.

If it's not clean enough (or the environment not enough shielded), the hum/noise/RF (use exclusively non inductive resistor!) directly modulating the tube's bias.

The greater the resistance/impedance, the greater a modulation.
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