Dubilier capacitor hunt

[paddy ryan]

Hi, Can anyone tell me where I can find replacement dubilier canned drilitic capacitors for my Ampro 16mm projector amplifier, its an old 1950s model. The caps are 80uF 150 volt dc polarised. I have hunted high and low for them! Or could I use something else to replace them. I am no expert on electronics, and have carefully noted the wiring to the four prongs on the old caps. Any advice would be greatly appreciated. oh the cans are 75mm x 20mm, and just fit in the projector body, so anything larger would be a problem.
Patrick

 

[danadak]

The electrolytic caps now a lot smaller than in 1950's. If they are in power supply
you can always use higher V than 150. Higher C can be circuit dependent on rectifier
tube loading, so do not go crazy.

https://vinylsavor.blogspot.com/2021/05/tube-of-month-5u4.html (example discussion)

You can go here and filter to desired C and V -

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Regards, Dana.

 

[Nigel Goodwin]

If you want to keep it looking original strip the insides out and fit a new capacitor in the can - as danadak mentioned, modern ones are a lot smaller.

 

[Les Jones]

When you say it has "four prongs on the old caps." it may be that there are 2 (Or even possibly 3 if one prong is common negative.) capacitors in the can. You need to check if it is just a single capacitor with two prongs for each connection.

Les.

 

[paddy ryan]

Thats great, thanks

 

[rjenkinsgb]

The caps are 80uF 150 volt dc polarised.

Does it say "80+80" or something similar?

A higher voltage replacement is fine, and the tolerance is very loose; eg. 100uF would definitely be OK< 150uF probably..

There are plenty of places online to get large can, single dual or multi section electrolytic caps, if that is what it is.
eg.

Dual Section Electrolytic Capacitors

www.surplussales.com

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Browse products from the Capacitors category - listing products sorted by Voltage, page 1

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