![]() ![]() H03G3/3042- Automatic control in amplifiers having semiconductor devices in high-frequency amplifiers or in frequency-changers in modulators, frequency-changers, transmitters or power amplifiers.H03G3/3036- Automatic control in amplifiers having semiconductor devices in high-frequency amplifiers or in frequency-changers.H03G3/30- Automatic control in amplifiers having semiconductor devices.H03G3/00- Gain control in amplifiers or frequency changers without distortion of the input signal. ![]()
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