Carrier frequency bridge - Unknown device

KL7AJ

Joined Nov 4, 2008
2,224
It's a bridge for a transducer like a strain gauge or thermocouple. To avoid drift, a low frequency AC (chopped) signal is used instead of DC.

Looks pretty clean.....well worth fixing up if it needs fixing.
 

Thread Starter

telec16

Joined Oct 28, 2014
4
Thank you.

It actually works, I managed to use the left part of the 'Bridge Supply' selector with a Wheatstone bridge, but I have no idea how to use the right part, the half-bridge...

It's pretty big, I wonder what kind of application needs that (unless there are no other choices back in the days ?).
 

KL7AJ

Joined Nov 4, 2008
2,224
Thank you.

It actually works, I managed to use the left part of the 'Bridge Supply' selector with a Wheatstone bridge, but I have no idea how to use the right part, the half-bridge...

It's pretty big, I wonder what kind of application needs that (unless there are no other choices back in the days ?).
+You haven't seen a big bridge till you've lugged around a General Radio 916. :)
 
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