[AMPS] Screen protection WHAAAATTTTTT!!!!

[Tom Rauch]

> If the dissipation is going to be high in the dropper, a constant current
> source feeding the shunt screen regulator from a lower voltage can  have
> the same effect. The current can be set to the maximum allowable screen
> current, and the shunt regulator absorbs any excess. Just a variant on
> Tom's method.

That method also lends itself to being easily converted into a 
switch to remove screen voltage during faults or during standby.
 
> >Use the bias and blower voltage (with an air pressure switch) to turn on
> >the HV system. 
> 
> Question: is pressure the best thing to monitor, or is air flow as 
good? 

The easiest thing to measure is pressure gradient across the 
anode cooling area. That can be as simple as a below 
chassis/above chassis pressure differential switch. If you lose that 
pressure drop, you know you have a problem with inlet pressure or 
outlet pressure.



73, Tom W8JI
w8ji@contesting.com

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