Amplifier provided with automatic level control

Amplifier system

Amplifier with a quadrature amplitude modulation (qam)...

Amplifier with automatic gain control

Amplifier with modulated resistor gain control

Amplifier with muting circuit

Amplifier with over-current protection

Amplifier with plurality of negative feedback circuits

Amplifier with signal level control

Amplifier-limiter circuit with reduced amplitude modulation...

Amplitude control circuit

An amplifier circuit

An automatic gain control for digital radar intercept receivers

Analog recording on magnetic media

Apparatus and method for detecting crossmodulation distortion

Apparatus and method for smooth audio scaling

Apparatus and method for voice band reduction

Apparatus and methods for enhancing electronic audio signals

Apparatus and methods for the harmonic enhancement of...

Apparatus for adjusting the efficiency of electric power...