[Amps] HV supply question

[Ian White GM3SEK]

Ulf Tjerneld wrote:
>
>I have noticed when I look on different HV supplys that sometimes the 
>negative lead is connected to chassis ground and sometimes it is kept 
>at a potential somewhat above ground by means of a resistor. Can anyone 
>explain to me why, and if, this is important?
>

The HV-minus lead (American: B-minus) is often allowed to go a little 
*below* chassis ground potential to permit safe metering of the anode 
current. In a triode amplifier, the grid current can also be measured 
separately.

For more details and diagrams of the current flows, you're welcome to 
download the Triode Board manual from the link below.


-- 

73 from Ian GM3SEK
http://www.ifwtech.co.uk/g3sek/boards