Difference Amplifier OP37 (CB19724E)

Raytheon's used operational amplifier is rare today, but the configuration can be adapted to use modern operational amplifiers.

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Current Regulator (CB13409E)
We found this circuit in a documentation for 1977 American radio amateurs. The LM336 integrated circuit...
Signal Injector (CB24158E)
The frequency of this oscillator depends on the coil and the 10 nF capacitor. The circuit is from...
Tone Burst Oscillator (CB20617E)
This circuit can work with the previous one generating signals, that can be decoded by it. The...