This MOSFET circuit for microphone applications was found in the December 1969 issue of Radio Electronics magazine. The transistors are uncommon today.
Found in older Signetics documentation, this circuit generates signals from 30 Hz to 25 kHz....
This circuit trips a relay when it stops receiving a signal. The transistor is germanium. We found...
This standing wave alarm (SWR) warns when a high SWR value may mean an overload for the...