[Collins] 872a Lamp, revisited

[ah7i@atl.org]

JERRY-

That's what the flourescent lamp ballest does :-)
The R is to limit the running current if the available ballast doesn't
match the tube...

-Bob
ah7i


On Thu, 28 Aug 2003, Dr. Gerald N. Johnson, electrical engineer wrote:

> So long as its AC applied to the plate, a choke works better than a
> series resistor. Dissipates much less power. And allows a super start
> mechanism for low voltage by shorting the tube then opening the circuit
> to let the inductive kick of the choke rise to the necessary initial
> firing voltage.
>
> 73, Jerry, K0CQ
>