This receiver was found in a Popular Electronics from the 90's. Its different configuration shows a tuning circuit after the tube that works as an aperiodic amplifier. Observe supply voltages.
This circuit was found in a 1964 Electronic Design to indicate when a headlight or flashlight bulb is...
Other amplifiers of the series like the MC3301, MC3401 and LM2900 can be used in this circuit. We found...
The circuit shown enables dynamic diode testing with an oscilloscope. We found this configuration in a...