[dirty1_1garry]

Hi folk!
Have on hands a pair of Sowter 8650a trxes. It's a substitute for UA 175 as output trx. Can be used in  other output amps with PP topology.

I'm studyng transformers and have a plan to wind my own tranies so I measure every transformer that falls into my hands.
Make measurements of DCR and inductance on two friencies (pretty simple LCR meter).
If you have an ideas what additional specs I should measure - feel free to give an advice.

[ruffrecords]

Always worth measuring leakage inductance as well. Gives you a better idea of HF response.

Cheers

Ian

[dirty1_1garry]

Always worth measuring leakage inductance as well. Gives you a better idea of HF response.

Thanks for your response, Ian!

Already measured it, but result confused me a little bit. Primary inductance with secondary shorted gave me 310mH(1kHz) and 19.58H(120Hz) on RED-CT and 403mH(1kHz) and 27.26H(120Hz) on GREEN-CT. Is it normal results?

[ruffrecords]

Thanks for your response, Ian!

Already measured it, but result confused me a little bit. Primary inductance with secondary shorted gave me 310mH(1kHz) and 19.58H(120Hz) on RED-CT and 403mH(1kHz) and 27.26H(120Hz) on GREEN-CT. Is it normal results?

The mH readings seem more typical to me. What meter are you using to make the measurements?

Cheers

Ian

[dirty1_1garry]

The mH readings seem more typical to me. What meter are you using to make the measurements?

I used E7-22 LCR meter. It's same as EXTECH 380193. It has two frieqencies and gives fairly accurate results as I compare it with Instek LCR-6300.

[ruffrecords]

I used E7-22 LCR meter. It's same as EXTECH 380193. It has two frieqencies and gives fairly accurate results as I compare it with Instek LCR-6300.

They should be plenty good enough. I must admit I do not often measure leakage inductance and when I have it has probably been at 1KHz. I will try a couple at 100Hz and let you know the results.

Cheers

Ian

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