This circuit operates at a voltage of 1.3 V from a single mercury cell. We found in an old documentation and for the components used the frequency is 500 kHz.
RF voltmeters can be tested with this circuit that generates a test signal. We found it in old...
This circuit for currents from 500 mA to 1.5 A was found on a Ham Radio from the 90s. R4...
This buffer and driver is from the integrated circuit manual itself, the Linear Technology LT1206. The...