Found in documentation from the 1980s, this circuit can have several adaptations to use modern transistors and LEDs instead of the lamp. The power supply voltage can also be changed.
This circuit is from a 70s documentation. The maximum sampling rate is 800 Hz. The operational...
This standing wave alarm (SWR) warns when a high SWR value may mean an overload for the...
This circuit has a very high input impedance and a very low output impedance. We found it on a...