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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 21st Oct 2019, 12:22 pm   #1
Dave757
Hexode
 
Join Date: Apr 2009
Location: Scratby, Norfolk, UK.
Posts: 382
Default Eddystone diecast boxes.

Hi,

Whilst turning out some old junk, I came across a boxful of old Eddystone
diecast boxes (JV Murcott manufacture).

These included
1 x 27134/IP/BP 111mm x 60mm
4 x 10758P/BP 145mm x 95mm
1 x 11130P/BP 125mm x 125mm

All unused. They came from Eddystone when the stores was cleared.

BUT They are all only 15mm approx thick with the lids on.

I can't imagine what these would have been used for.

Any Ideas?

Kind regards
Dave
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Old 21st Oct 2019, 1:05 pm   #2
GrimJosef
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Default Re: Eddystone diecast boxes.

A high-frequency small-signal RF pcb with SMA connectors, or with larger connectors mounted through the bottom of the box ?

Cheers,

GJ
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Old 21st Oct 2019, 1:07 pm   #3
G6Tanuki
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Default Re: Eddystone diecast boxes.

I remember using those shallow Eddystone diecasts for mounting heater- and low-HT-rail feedthrough-capacitors in RF applications where the spec had been tightened and the original design didn't meet the 'conducted' component of the new spec.

Bolt a really-shallow Eddybox over the existing unfiltered holes in the chassis, fit the feedthroughs, re-test and you'd got a nice 20dB reduction in unwanted RF leakage.

For reasons-forgotten, the filterboxes were always painted a very pale blue!
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Old 21st Oct 2019, 11:33 pm   #4
Dave757
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Join Date: Apr 2009
Location: Scratby, Norfolk, UK.
Posts: 382
Default Re: Eddystone diecast boxes.

Hi,

Many thanks for the replies.
Certainly food for thought!

Kind regards
Dave
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