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In Reply to:
RE: How many KT170 posted by **PakProtector**
on August 2, 2024 at 05:44:13:

So, 600 Ohm a-a output will deliver 300 Ohms to each phase in Class A. If we take four pairs, and idle them a bit higher at 175 mA, the quad will carry 700 mA. Break out Ohm's Law. You are looking for how much voltage 700 mA can develop across 300 Ohms. 210 Volts. For how many, figure each can swing 52 volts. That load may take 6 pairs to get up around 300V. B+ can be higher since we'll not be able to swing the plate to zero volts.

Now for the fun part, how much power. You'll be able to put 600V across that 600 Ohms( one side 300V up, the other 300 down ). So a 600W( peak ), Class A amp for your trouble.

Douglas

Friend, I would not hurt thee for the world...but thou art standing where I am about to shoot.

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Follow Ups

How many? Just do the simple math-PakProtector04:12:10 08/03/24(1)

- Don't forget pics -
PakProtector14:00:50 08/10/24(0)