I14R10
Full Member level 3

On this schematics http://d16837591.u227.surftown.dk/oz2cpu/20m/new-amp.htm
R1 and R2 are not used, as the author says. Why? If there was 2.2k resistor parallel to LC circuit in drain, then in resonance imepdance of that RLC circuit would be 2.2k and then the transformer in drain would make sense. 2.2k impedance would be transformed into 50 ohm.
But if there is not 2.2k resistor, then in resonance LC circuit impedance would become infinite (theoretically) and the transformer would not transform the impedance to 50 ohms. It would be much higher. Is there a reason for this?
R1 and R2 are not used, as the author says. Why? If there was 2.2k resistor parallel to LC circuit in drain, then in resonance imepdance of that RLC circuit would be 2.2k and then the transformer in drain would make sense. 2.2k impedance would be transformed into 50 ohm.
But if there is not 2.2k resistor, then in resonance LC circuit impedance would become infinite (theoretically) and the transformer would not transform the impedance to 50 ohms. It would be much higher. Is there a reason for this?