plate choke for 10k Rp type and HF limitation

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Hi,

I'm needing to use a low DCR plate load as the voltage across this load provides bias for the next stage, this rules out resistor loading and also CCS loading (voltage compliance) = leaves choke loading.. ok great.

Question is one I cant find the answer for.. say ~10k Rp tube (UX-201A),should be a matter finding an off the shelf coil - say MQ EX-010 = 300H at 10mA Ip = great.. and 1k DCR is fine.. but what is the capacitance of such a coil as it relates to HF limit ?

I've asked at the MQ forum and it .. well, it just didn't = after some initial expression of interest to provide me a product from the winder (at suggested extra cost) when it got to 'what sort of capacitance = what sort of HF limitation to expect' it got quiet really quickly..

Any ideas..

10k Rp, Ip anywhere between 4 - 15mA depending on how I can shunt current around the tube (beneficial in this design).. can I get thru 20kHz at less an -1dB.. ??

Thanks,
Shane

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Topic - plate choke for 10k Rp type and HF limitation - shane. 00:01:43 12/14/16 (8)

RE: plate choke for 10k Rp type and HF limitation - Paul Joppa 20:03:12 12/14/16 (1)

RE: plate choke for 10k Rp type and HF limitation - shane. 21:26:14 12/14/16 (0)

RE: plate choke for 10k Rp type and HF limitation - Larry D. Moore 06:57:32 12/14/16 (1)

RE: plate choke for 10k Rp type and HF limitation - shane. 19:43:36 12/14/16 (0)

Bartola Gyrator - andy evans 02:27:14 12/14/16 (3)

RE: Bartola Gyrator - shane. 19:52:13 12/14/16 (2)

RE: Bartola Gyrator - send a message - andy evans 04:38:44 12/15/16 (1)

RE: Bartola Gyrator - thanks, will do (nt) - shane. 13:50:37 12/15/16 (0)

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