I have a Hammond 270EX PT in front of me. I do not see a center tap wiring for the 6.3v wiring, so I am thinking that this Hammond trannie has an internal center tap and that I do not need to create an artificial center tap with 100ohm resistors?
Anyone know if this is correct and there is essentially no center tap wiring needed for the Hammond 270EX? I've looked at the Hammond spec sheets and done a google search. However, I couldn't tell for sure.
Thanks! With respect, 10thtx
Hammond 270EX PT 6.3v wiring center tap?
Moderators: pompeiisneaks, Colossal
Re: Hammond 270EX PT 6.3v wiring center tap?
10th, I just looked at a 270HX that I've had for awhile, which should be the same series. It does have the 6.3v ct. Interesting.
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Re: Hammond 270EX PT 6.3v wiring center tap?
You are correct Martin, guess they are NOT the in same series...
Re: Hammond 270EX PT 6.3v wiring center tap?
Yes, the Hammond specs don't mention a center tap for the 6.3v heater wires. I did not know if that meant it wasn't needed, that there is an internal center tap inside the PT itself, or if there is an expectation of creating an artificial center tap?
with respect, 10thtx
with respect, 10thtx
Re: Hammond 270EX PT 6.3v wiring center tap?
I'd assume no center tap. Measure from the filament leads to every ground coming out of the transformer, and the case. That should be definitive.
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It looks like 100 ohm 1/2 watt resistors to ground time!
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Not screaming like the passengers in his car!
Cutting out a man's tongue does not mean he’s a liar, but it does show that you fear the truth he might speak about you!
Re: Hammond 270EX PT 6.3v wiring center tap?
I did install 100ohm resistors to ground to make an artificial center tap and it works great.
with respect, 10thtx
with respect, 10thtx