The Superior Instruments Co. Model 76 Bridge part 2: What’s (actually) in the box?
Wednesday, February 25, 2026 at 06:32:42
The Superior Instruments Co. Model 76 is an interesting piece, and appears to have been built out of whatever the manufacturer could find at the time. Considering this piece was designed about 10 years after the end of the war, the amount of surplus parts would have been quite high. The schematic that was published and what’s actually in the box don’t match one another.
Here’s what the schematic claims is in the box:
A check of what’s actually in the box:
There’s a lot of different types of components in here. Some RN-type mil-qualified resistors sit beside the cheapest of carbon composite parts. Early ceramic capacitors run with oddball metal can parts, which sit beside devices that have really strange values. The device even uses a low-power RF Triode as it’s rectifier tube.
While this device won’t be difficult to make work again, it’s going to be much easier now that I know what’s inside this thing.
Next part will be getting an order together for parts. Stay tuned!
Next part of this series: Coming soon
Previous part of this series: https://wereboar.com … -and-excuse-me-what/