Hi all. Could I please get your help to identify this capacitor type (per attached photo)? I can't find this form factor on any of the color-code charts.
I'm assuming it's a high-voltage poly or maybe paper? It's one of several used as a decoupling cap in a little console tube amp from around 1960, built in Australia (I think). They are all the same color scheme with no other markings. Photo is of the one that looked cleanest!
A couple of these caps show cracks so I'll replace them all. I intend to measure them as I remove them, but any help to find a relevant chart to decode these guys would be appreciated in case they don't measure accurately.
The circuit uses a 12AX7 and 6GW8 (single ended) so I'm trying to dredge up a schematic that might be similar. Based on context, I'm assuming 400/630V rating and a value between about .001 and .1 or thereabouts.
I'm assuming it's a high-voltage poly or maybe paper? It's one of several used as a decoupling cap in a little console tube amp from around 1960, built in Australia (I think). They are all the same color scheme with no other markings. Photo is of the one that looked cleanest!
A couple of these caps show cracks so I'll replace them all. I intend to measure them as I remove them, but any help to find a relevant chart to decode these guys would be appreciated in case they don't measure accurately.
The circuit uses a 12AX7 and 6GW8 (single ended) so I'm trying to dredge up a schematic that might be similar. Based on context, I'm assuming 400/630V rating and a value between about .001 and .1 or thereabouts.
Attachments
10,000 pF tube ceramic from the 60's. Fairly low voltage if I recall properly. It is probably fine.