MQracing said:There was a previous discussion on this forum of phase splitting autoformers---
might be worth a review.
Jaime said:Yes, I saw the SETH amplifier and others in the MQ forum ( the nice Keto amps.....), but others in Japan and Russia Webs.
It is an old very good idea.
Best regards Jaime
Do you have a part # and a price?Bandersnatch said:hey-Hey!!!,
Heyboer TX in Michigan can also wind these. They have a design of mine in their books. It is based on the same interleave of the prototype Mike and I worked out for his 173PPS. Balanced capacitance and most importantly balanced and mimimum leakage L is how these things work.
Out of curiosity--- are you fimiliar with the "compact" type amp circuit--- where essentially the phase splitting is done in the PP output stage itself---- it is yet another approach worth exploring.
Brett said:Do you have a part # and a price?
I have such a project on the back burner. Mine will be based on a design that appears on the diyparadise site.
....I dug this up just in case you wanted to see how well your choke mesured.
I did an 832A PP first using a CT choke for phase inversion and it worked fine, sounded better than my LTP phase inverter based on the coldwar project at ultranalog.
Then Yeo of diyparadise.com suggested to use the output self phase inversion which I tried. It sounded excellent and is as good as the CT choke phase inversion.
In the end, I took off the CT choke phase inverter (I will be using it on another PP project either an EL34 or KT88 PP).
The CT choke phase inverter is really nice to use, lessen the number of parts that the signal must go through.