Heathkit 51-29 output transformers issure

Gleb375 · 2nd December 2011, 12:23 PM

I bought a pair of 51-29 transformers but they aren't shipped to me yet. I'm going to make a simple 6V6 PP switchable to Triode or Ultralinear mode.
There are no their winding data or any technical data, so I can't begin to design my amplifier while awaiting shipping.
Can you help me to find the data ?

Gleb

smbrown · 2nd December 2011, 05:41 PM

You might try here:
Push-Pull Transformer Test

Gleb375 · 2nd December 2011, 06:37 PM

Thank you so much ! I found my transformers data:

Load resistance: 4, 8, 16 Ohm
Zp-p ~ 10,5 K
UL ratio: 43%

It's a pity that there is no primary inductance data but I can measure it when I'll get the transformers.

2nd December 2011, 12:23 PM	#1
Gleb375 diyAudio Member Join Date: Nov 2011 Location: Russia	Heathkit 51-29 output transformers issure I bought a pair of 51-29 transformers but they aren't shipped to me yet. I'm going to make a simple 6V6 PP switchable to Triode or Ultralinear mode. There are no their winding data or any technical data, so I can't begin to design my amplifier while awaiting shipping. Can you help me to find the data ? Gleb

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2nd December 2011, 05:41 PM	#2
smbrown diyAudio Member Join Date: Jun 2004 Location: Portland, OR	You might try here: Push-Pull Transformer Test

2nd December 2011, 06:37 PM	#3
Gleb375 diyAudio Member Join Date: Nov 2011 Location: Russia	Thank you so much ! I found my transformers data: Load resistance: 4, 8, 16 Ohm Zp-p ~ 10,5 K UL ratio: 43% It's a pity that there is no primary inductance data but I can measure it when I'll get the transformers.

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