please allow me to do some "brute-force-reverse-engineering" with no theoretical basis whatsoever, just what I have observed by measuring
this is with the intention of understanding the selection of a new transformer (if needed)
HIGH VOLTAGE: the two transformer secondary RED wires are delivering (measured value) 320 VAC which after the RECTIFIER end up in 213 VDC
I am assuming that to get 400 VDC required by the amp's schematic i would need a transformer that delivers 601 VAC (400 VDC * 320 VAC / 213 VDC)
as, by some reason (there surely is a good explanation), whatever AC voltage I send through the rectifier ends up being divided by 1.5 and transformed in DC voltage
if that is the case, the HAMMOND 370BX seems to be the closest (601.4 VAC)
https://www.hammfg.com/files/parts/pdf/370BX.pdf
BIAS VOLTAGE: the Hammond transformers I've seen, they all deliver 50 VAC and I am failing to see how 50 VAC are going to become -50 VDC
https://www.hammfg.com/electronics/t...rs/classic/300
in any case I am willing to understand who to do some "magic" with the diode arrangement to get the current transformer to do the job
this is with the intention of understanding the selection of a new transformer (if needed)
HIGH VOLTAGE: the two transformer secondary RED wires are delivering (measured value) 320 VAC which after the RECTIFIER end up in 213 VDC
I am assuming that to get 400 VDC required by the amp's schematic i would need a transformer that delivers 601 VAC (400 VDC * 320 VAC / 213 VDC)
as, by some reason (there surely is a good explanation), whatever AC voltage I send through the rectifier ends up being divided by 1.5 and transformed in DC voltage
if that is the case, the HAMMOND 370BX seems to be the closest (601.4 VAC)
https://www.hammfg.com/files/parts/pdf/370BX.pdf
BIAS VOLTAGE: the Hammond transformers I've seen, they all deliver 50 VAC and I am failing to see how 50 VAC are going to become -50 VDC
https://www.hammfg.com/electronics/t...rs/classic/300
in any case I am willing to understand who to do some "magic" with the diode arrangement to get the current transformer to do the job
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