Triac driver (CB22446E)

The presented circuit uses an optocoupler to trigger a triac. We found it in a Popular Electronics from 1992.

Triangular and square generator (CB21449E)
Found in older Signetics documentation, this circuit generates signals from 30 Hz to 25 kHz....
No signal alarm (CB22300E)
This circuit trips a relay when it stops receiving a signal. The transistor is germanium. We found...
SWR Alarm (CB4891E)
This standing wave alarm (SWR) warns when a high SWR value may mean an overload for the...