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Introduction and Pentode CF question
Introduction and Pentode CF question
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Old 26th June 2020, 11:33 AM   #11
EZ80 is offline EZ80  England
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Thanks again Mona, I can see now that to use a step down OPT I would have to add gain at least equal to the step down ratio. Could you explain a little more on your comment about also doing balanced input to power amp, this is my reason for wanting TX output. Thanks John
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Old 26th June 2020, 01:56 PM   #12
Ketje is offline Ketje  Belgium
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The output of the transformer gives a signal as the difference between the two connections, no relation to ground.
If the amplifier needs a centre (ground) it's the responsability of the amp.
With a transformer input at the amplifier the connection is fully floating.In that case a resistor (>1MΩ) to ground on one of the leads (or a centre tap) to ground is best to prevent charge build-up.
Mona
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Old 26th June 2020, 02:06 PM   #13
EZ80 is offline EZ80  England
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Thanks again Mona, are you saying I could use the 126b but float the output ? Cheers John
 

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