Thermostatic relay (CB21285E)

We found this circuit in an old QST magazine. The circuit is powered according to the thermostatic relay used.

Miller Oscillator (CB9649E)
This crystal-controlled 1000 kHz oscillator was found in 1980s American documentation. The...
Neon flahser with SIDAC (CB4244E)
This circuit using a SIDAC as a relaxation oscillator was found in the ON Semiconductor manual for...
High Input Impedance Operational (CB14094E)
The configuration shown is from the National Semiconductor Linear Applications Handbook. The...