[Amps] Drake

Paul Baldock paul at paulbaldock.com
Thu Feb 20 10:12:54 EST 2014

As in most Grounded Grid Amplifiers the Drake 
requires that B- is allowed to float from ground. 
If your B- is connected directly to ground 
(chassis) the metering system will not work. You 
need to check the schematic for the OEM supply and wire accordingly.

- Paul
- KW7Y

At 12:59 AM 2/17/2014, thomas haglund wrote:
>I have a drake l4 hf amp.i have built a external 
>power supply that i connected to the hv miller
>In drake amp.and a still have orginal ps 
>connected to 220 line to amp to get power to
>Amp for 5v to tubes and so on.hv line from orginal ps has been disconnected.
>Now a small problem,grid current and anod current meters dont work,what has
>I missed?,
>Best regads
>Skickat från min iPad 
>Amps mailing list Amps at contesting.com 

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