[Milsurplus] High Voltage Electronic Load

[Richard Brunner]

I don't have the article, but it isn't hard to figure.  Put a variable 
bias supply across the grid, cut off will be minus 250-300 volts, and 
current will increase as bias is reduced.  The 304-TL is rated 3000 
volts, 300 Watts, 900 ma maximum.  Also put RF chokes in the grid and 
plate leads perchance it wants to oscillate.

At the time 304-TL's sold for less that a dollar, so this was a 
reasonable application.  Today they are worth significant money, so it's 
not so clear-cut.

Richard, AA1P


On 02/21/2014 09:17 PM, n2lxm at juno.com wrote:
> Good Evening All,
>
>          I am trying to fine some information on a Radio Magazine article.
> I be leave it was in 73 magazine, years ago. The author used a 304 TL
> Triode as an electronic load for testing High Voltage supplies. Dose
> anyone remember such an article and what magazine it cold have been in.
> Or if you have a circuit that you have used. Thanks
>
>
>                                  Jeff N2LXM
>                    AMATEUR RADIO OPERATOR
>                                  AMERICAN
>                                    PATRIOT
>                    Proud Father of two US MARINES
>
> ____________________________________________________________
>