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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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11th Dec 2019, 5:23 pm | #1 |
Hexode
Join Date: Aug 2009
Location: Liverpool, Merseyside, UK.
Posts: 254
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What are these?
Can anyone suggest what the following components might be please?
Mnay thanks in anticipation.
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Geoff. (BVWS Member) |
11th Dec 2019, 5:30 pm | #2 |
Moderator
Join Date: Mar 2012
Location: Fife, Scotland, UK.
Posts: 22,801
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Re: What are these?
First photo: potted filters.
Normally used to filter switch clicks etc which could interfere with radio. Mains line and neutral in, ditto out and there'll be a common mode choke inside, and possibly a L-N connected capacitor or two. The one with the extra connection will have a pair of capacitors, one from L to earth and one from N to earth. As for the second photo, I haven't a clue. David
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11th Dec 2019, 5:55 pm | #3 |
Hexode
Join Date: Feb 2011
Location: Gloucestershire, UK.
Posts: 376
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Re: What are these?
I thought the first photo may be a trigger transformer, the sort used in xenon flash circuits.
The second photo are "video diodes" which is a particularly bad description. They fit in waveguide directional couplers for measuring forward and reverse power in microwave systems. Lord knows where they got the description from!
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11th Dec 2019, 6:27 pm | #4 | |
Nonode
Join Date: Oct 2008
Location: Warsaw, Poland and Cambridge, UK
Posts: 2,669
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Re: What are these?
Quote:
Chris
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11th Dec 2019, 8:16 pm | #5 |
Hexode
Join Date: Aug 2009
Location: Liverpool, Merseyside, UK.
Posts: 254
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Re: What are these?
Thanks for that, I can sleep easy now!
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Geoff. (BVWS Member) |
11th Dec 2019, 10:23 pm | #6 |
Dekatron
Join Date: Jul 2007
Location: Penrith, Cumbria, UK.
Posts: 3,684
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Re: What are these?
Those first things look like they may be opto-couplers? We used similar three-leg-one-end-two-leg-the-other transistor / diode optos in Marconi HF transmitters, but they were encapsulated in a black rectangular plastic.
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