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Components and Circuits For discussions about component types, alternatives and availability, circuit configurations and modifications etc. Discussions here should be of a general nature and not about specific sets.

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Old 28th Aug 2019, 6:51 pm   #1
trabant
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Default Can anyone identify this valve Philips rectifier

Can anyone put a number to this valve please 4 pin rectifier .
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Old 28th Aug 2019, 6:55 pm   #2
turretslug
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Default Re: Can anyone identify this valve Philips rectifier

I assume that what looks like a "30" is actually "80"- a common pre-war type with directly-heated 5V cathode. Of US origin but no doubt Philips and many others also made it.

http://www.r-type.org/exhib/aaa0296.htm
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Old 29th Aug 2019, 7:06 am   #3
barrymagrec
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Default Re: Can anyone identify this valve Philips rectifier

Certainly looks like an 80 - a 5Y3 before they put it on an octal base.

It`s listed in the Mullard Maintenance manual so it was certainly at least badged by Mullard / Philips.
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