audio-talk

Mike H wrote:Yeah, OK, like I mean what happens to the anode current, DC Voltages, or owt like that

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When one stops working I pull them both out and "bung" the Chinese ones in.

Never (ever ) bothered to check why. They are still both working though.

Well this is what I got ! Quote. Silicon rubber insulating washer (Size: 19.05mm x 12.7mm, Fixing hole dia 3.7mm), Reinforced with glass fiber. Eliminate the need for heatsink compound. MATERIAL THICKNESS: 0.3mm, THERMAL CONDUCTIVITY: 1.1W/m-K, BREAKDOWN VOLTAGE: 4000V, TEMP. RANGE: -40°C to +200°C,...

Mike H wrote:What exactly does it do when it goes wrong?

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It stops working !

And I will add a 3mm nylon washer to the kit as well, cos thats what I use !

As the GM70 amp is undergoing "modifications" the 300b / ECL82 amp is back in position. My pair of EH gold grids is playing, and they do sound a little better than the Chinese 300b. One gold grid has proved problematic in the past, but both are still going strong after an hours playing, so...

Dave the bass wrote:A mates old cat died this weekend. He'd had it for years and it had a good life... always playing and sleeping and generally being a happy cat.

For its last 2 weeks he rubbed lard into the cats back.

It went downhill fast soon after that....

DTB

Did it win a medal ?

I was looking on the RS site for TO-220 insulator kits earlier. Found one http://uk.rs-online.com/web/search/searchBrowseAction.html?method=retrieveTfg&binCount=1&Ne=4294957561&Ntt=to220+kit&Ntk=I18NAll&Nr=AND%28avl%3auk%2csearchDiscon_uk%3aN%29&Ntx=mode%2bmatchallpartial&...

No what I am saying is that the DCR is whatever it is, the winder will have aimed at a DCR, normally if it works out that he can find space for thicker wire then the DCR will be less, but as thats normally considered a good thing they probably wont tell anyone. Just explaining why it may be adverti...

Nick wrote:
I think normally DCR in chokes is best considered as a maximum, as lower is normally better.

I'm wearing my "thicko" hat at the moment !

Not sure I understand what Nick is saying. The DCR of a choke you have is what it is. Does it change in use ?

Ali Tait wrote:AVO's are great meters.

Certainly are ! I remember using them when I was at Marconi (1967/1968).

If I read on the higher range ( 320K or 32K ) I get a steady 550R, but if I go down a bit ( 3200R ) the reading just fluctuates. Phil, have you got an old analogue moving coil type meter?, they usually work OK on inductive components. DTB No, only got the DMM. I blew all the others up. :oops: I thi...

If I read on the higher range ( 320K or 32K ) I get a steady 550R, but if I go down a bit ( 3200R ) the reading just fluctuates.

I have to dash into another room in the adverts - that is my daily exercise.

Is choke DCR as measured with a multimeter ?

I have some HFC 40H @ 30ma chokes. HFC list the DCR at 700R and according to my DMM they are 550R.

The difference is not a problem as such, just want to be sure.

Mike H wrote:


I've got some paraffin if it's any use

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Thanks, but I'm not constipated.