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G6Tanuki · 6th Nov 2017, 5:50 pm

It's not a cheap way to do things, but it does make repairs, ad-hoc changes/customisations a lot easier.

Plenty of stuff in the 1950s/early-60s - specially military gear and 'instrumentation' like oscilloscopes - was built similarly. The US called these "cordwood modules". The "Philbrick" company in the US produced op-amps using the same idea -

http://www.cowardstereoview.com/analog/philk2w.jpg

http://www.dvq.com/oldcomp/analog/Ph...dium/gapr2.JPG

in 1952!

[This being one of the designs which made the late Bob Pease famous].

6th Nov 2017, 5:50 pm	#5
G6Tanuki Dekatron Join Date: Apr 2012 Location: Wiltshire, UK. Posts: 13,998	Re: Why did Ferrograph do this? It's not a cheap way to do things, but it does make repairs, ad-hoc changes/customisations a lot easier. Plenty of stuff in the 1950s/early-60s - specially military gear and 'instrumentation' like oscilloscopes - was built similarly. The US called these "cordwood modules". The "Philbrick" company in the US produced op-amps using the same idea - http://www.cowardstereoview.com/analog/philk2w.jpg http://www.dvq.com/oldcomp/analog/Ph...dium/gapr2.JPG in 1952! [This being one of the designs which made the late Bob Pease famous].