[ARC5] HV oil caps - keep or not ?

[Francesco Ledda]

Hi Hue,

I am interested in 2 of those capacitors to repair a TMC power amp supply.

Best, Francesco K5URG

Sent from my iPad

> On Jan 13, 2022, at 17:28, Hubert Miller <Kargo_cult at msn.com> wrote:
> 
> I found in my storage, 6 of oil caps 4 uF 2000V. I need to decide whether to keep these a little longer or not. 
> I only maybe anticipate having to build one HV DC supply, for about 1000 volts for a Japanese aircraft radio.
> I don't know if these caps have enough capacity to be practical for this use. I would, I think, use a choke input filter. Then would 2 or maybe 3 of these parallel, give me enough filtering? The supply, I'm thinking, should do about 1000 volts at around 150 mA max. Since the transmitter is CW only, I could actually go cap input, and the big jump in voltage would probably be okay, as long as I regulate the VFO voltage. The alternative to these caps would be lytics, a stack of 3 of 450 lytics and choke input to keep the B+ from flying up to AC peak. So what think?
> What would you do? If I don't keep these oil caps, I would most likely give them away at a hamfest. Which may be optimistic thinking, because who builds anything like that, or even knows what an oil cap is? BTW, they are Pyranol, but I won't be licking the case or using it on a salad, so no problem. 
> thanks-
> Hue Miller
> ______________________________________________________________
> ARC5 mailing list
> Home: http://mailman.qth.net/mailman/listinfo/arc5
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:ARC5 at mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: https://www.qsl.net/donate.html