220248 ⎘
Gain control in amplifiers or frequency changers without distortion of the input signal; Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers the gain being continuously variable by varying the duty cycle
Clipping state detecting circuit and clipping state detecting method
#2Two-state automatic gain control for communications and radar
#3Class-D amplifier with duty cycle control
#4Zero drift, limitless and adjustable reference voltage generation
#5Sensor signal output circuit and method for adjusting it
#6Automatic gain control of amplifier by dynamic suppressing and output control at multiple stages
#7Amplifier arrangement and method for signal amplification
#8Class-D amplifier
#9Data processing system for clipping correction
#10AUDIO SIGNAL AMPLIFYING CIRCUIT AND ELECTRONIC DEVICE USING THE SAME
#11Speaker
#12System and method of generating electrical stimulation waveforms as a therapeutic modality
#13Audio amplifier
#14Apparatus and method to control audio volume in D class amplifier
#15Volume adjustment device, digital amplifier, and digital signal reproducing device
#16Pulse-width modulation circuit and switching amplifier using the same