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[AMPS] Caveat on Dentron Filaments + MLA-2500B Notes

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Subject: [AMPS] Caveat on Dentron Filaments + MLA-2500B Notes
From: (Tom Rauch)
Date: Mon, 31 Jul 2000 21:05:52 -0400
> ?  Yes.   Also, the orig. shunt resistor was wire wound.  The cathodes
> themselves are c. 27-ohms avg. so a series cathode-resistor is needed to
> increase the driving Z of the cathodes.  Another circuit improvement is to
> add a ultra fast recovery 1a/400v  diode in series with the shunt R.   The
> diode is oriented to prevent current from flowing in the shunt R when the
> tubes are conducting.  This makes for a more balanced load on the radio.  

What is the reverse recovery time of the diode you used?

73, Tom W8JI

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