I recently dug my old Pilot SA 232 out of the closet(which I bought new) and decided it was time. I replaced the cans and then variaced it up. There was hum on one channel so I assume it is one of the remaining caps(which I know now I should have just taken care of in the first place). M y question is which ones to go with. Most of them are .047mfd and .1mfd @400volt. The choices in this size seem to be metallized polyester or polypropylene. Does it make a difference? And is there another choice to consider?
Many thanks for your input,
Norman
P.S. I used NOS cans. I've heard different views on the wisdom of this.
Many thanks for your input,
Norman
P.S. I used NOS cans. I've heard different views on the wisdom of this.
Norman,
I no longer trust people when they say NOS. Unless it's in original shrink wrap (which won't be the case for anything worth having), there's no telling what the deal is.
Given a choice between polyester and polypropylene, I'd go polypropylene. I only use polyester for experiments, since they're cheap and readily available. Once I've got the circuit locked down, I change out the polyester caps for better stuff.
It can get pricey depending on how fancy a cap you want. Fancier still is polystyrene, but those are getting rare; as I understand it, the folks who used to make the styrene film discontinued the item. You want the scary stuff? Go Teflon. Call 911 if you have a heart attack upon seeing the prices.
Film & foil is better than metallized.
Grey
I no longer trust people when they say NOS. Unless it's in original shrink wrap (which won't be the case for anything worth having), there's no telling what the deal is.
Given a choice between polyester and polypropylene, I'd go polypropylene. I only use polyester for experiments, since they're cheap and readily available. Once I've got the circuit locked down, I change out the polyester caps for better stuff.
It can get pricey depending on how fancy a cap you want. Fancier still is polystyrene, but those are getting rare; as I understand it, the folks who used to make the styrene film discontinued the item. You want the scary stuff? Go Teflon. Call 911 if you have a heart attack upon seeing the prices.
Film & foil is better than metallized.
Grey
- Status
- This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.