On Sat, Dec 7, 2024 at 10:59 AM, Steven, W2MY wrote:
2) Why are there so many warnings about not going above 12 Volts (I assume for the 12 Volt supply), but no warnings about going over 9 Volts for the 9 Volt supply?
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Exceed the limits of the BS170s and they expire more readily.? Higher voltage is
more power also when there is SWR issue higher current.
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For 9 or 12V the transformer ratio is used to limit power at a given voltage.
The voltage to the final is not the same for 12 or 9V.? If that were the case
there would be no need for different transformer.
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3) Is everyone else getting 7.5 Volts to their finals regardless of input supply voltage, or do I have a problem?
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Nope!? But it is controlled by the MPU DAC output.
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--
Allison
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