Variable frequency resonator, variable frequency oscillator,...

Variable frequency selective circuits

Variable frequency signal generating method

Variable frequency synthesizer

Variable frequency system

Variable frequency u.h.f. local oscillator for a television...

Variable frequency voltage controlled crystal oscillator

Variable gain amplifier

Variable gain amplifier

Variable gain amplifier automatic gain control method and...

Variable gain amplifying device

Variable gain control circuit

Variable gain direct coupled amplifier

Variable gain distributed amplifier

Variable gain electronic amplifier

Variable gain encoder apparatus and method

Variable gain low-noise amplifier for a wireless terminal

Variable impedance circuit employing an ris field effect...

Variable impedance circuit for coin telephone ground isolation

Variable impedance circuit having a linear characteristic...