Re: Film of Erie Type 8 resistor manufacture
High-stab Eries behave wonderfully. They look similar to the carbon comps from the outside (very slightly different sizes) but they are entirely different internally. The resistive element is a carbon film which is completely stable. It is also less electrically noisy. They were more expensive to make though than the carbon comps. And they wouldn't stand pulsed overload in the way the comps would.
I've been in touch with Douglas Fisher's son through the radararchive website and he's confirmed that his father was at TRE only during the war. He thinks he never returned, not even briefly. So the film would certainly have been made in the first half of the 1940's. His son remembers Douglas (his grandfather) telling him that there was a significant issue with designers ordering up non-standard resistor values and that they tried to explain to them how expensive and time-consuming this was. Maybe the point of the film, at least in part, was to drive this home ?
Cheers,
GJ
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