Marconi TM6113 choke adaptor. - UK Vintage Radio Repair and Restoration Discussion Forum

Diabolical Artificer · 10th Jun 2018, 1:10 pm

I have a Marconi TF2700 LCR bridge which you can get an adaptor for so you can measure inductance with a DC bias. I've searched a lot for one, or for a schematic, but the best I've found is a schematic without value's in the TF2700 manual.

What inductor's/caps could I use for the two L/C's in parallel, the ones in series with the bias PSU? If I had a handle on those I could make a homemade TF6113. I presume a 10n would do as the cap across the supply and a 0.1u 630v as the blocker on the RHS.

Re measuring tfmr's, I've had great difficulty using my TF2700 as well as another L meter i have. I get a different result every time. There's a video here - https://www.youtube.com/watch?v=s62DL_v5zRg that goes into a bit of detail and a method of measuring said tfmr's.

Andy.

ms660 · 10th Jun 2018, 1:16 pm

https://www.vintage-radio.net/forum/...ad.php?t=99238

Lawrence.

Diabolical Artificer · 10th Jun 2018, 2:09 pm

Don't know what happened there Lawrence, I searched here first. Thanks.

Andy.

10th Jun 2018, 1:10 pm	#1
Diabolical Artificer Dekatron Join Date: Jul 2009 Location: Sleaford, Lincs. UK. Posts: 7,661	Marconi TM6113 choke adaptor. I have a Marconi TF2700 LCR bridge which you can get an adaptor for so you can measure inductance with a DC bias. I've searched a lot for one, or for a schematic, but the best I've found is a schematic without value's in the TF2700 manual. What inductor's/caps could I use for the two L/C's in parallel, the ones in series with the bias PSU? If I had a handle on those I could make a homemade TF6113. I presume a 10n would do as the cap across the supply and a 0.1u 630v as the blocker on the RHS. Re measuring tfmr's, I've had great difficulty using my TF2700 as well as another L meter i have. I get a different result every time. There's a video here - https://www.youtube.com/watch?v=s62DL_v5zRg that goes into a bit of detail and a method of measuring said tfmr's. Andy. Attached Thumbnails __________________ Curiosity hasn't killed this cat...so far. Last edited by Diabolical Artificer; 10th Jun 2018 at 1:16 pm.

10th Jun 2018, 1:16 pm	#2
ms660 Dekatron Join Date: Apr 2011 Location: Cornwall, UK. Posts: 13,454	Re: Marconi TM6113 choke adaptor. https://www.vintage-radio.net/forum/...ad.php?t=99238 Lawrence.

10th Jun 2018, 2:09 pm	#3
Diabolical Artificer Dekatron Join Date: Jul 2009 Location: Sleaford, Lincs. UK. Posts: 7,661	Re: Marconi TM6113 choke adaptor. Don't know what happened there Lawrence, I searched here first. Thanks. Andy. __________________ Curiosity hasn't killed this cat...so far.