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A. Simulation of a Parallel Resonance Circuit
A. Simulation of a Parallel Resonance Circuit

... between 700 Hz to 734 Hz (in steps of 2 Hz) to obtain the minimum source current, IS. Note it and also record the frequency below. New resonant frequency with the J1 switch OPEN = ...
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Valve RF amplifier



A valve RF amplifier (UK and Aus.) or tube amplifier (U.S.), is a device for electrically amplifying the power of an electrical radio frequency signal.Low to medium power valve amplifiers for frequencies below the microwaves were largely replaced by solid state amplifiers during the 1960s and 1970s, initially for receivers and low power stages of transmitters, transmitter output stages switching to transistors somewhat later. Specially constructed valves are still in use for very high power transmitters, although rarely in new designs.
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