AMPLIFIER WITH PULSE-DURATION MODULATION Russian patent published in 1995 - IPC

FIELD: radio engineering. SUBSTANCE: characteristic feature of invention consists in decrease of nonlinear distortions and in expansion of band of frequencies of amplified signal while keeping high efficiency. Amplifier with pulse-duration modulation has former 1 of pulses with PDM, amplifying tube 2, diode 3, source 4 of anode supply, load 5, capacitor 6 of first low-pass filter, choke 7 of first low-pass filter, choke 8 of second low-pass filter, capacitor 9 second of low-pass filter, key amplifier 10, subtracter 11, respective voltage divider 12, unit 13 of optical decoupling, delay unit 14, adder 15, source 16 of bias voltage, constant current amplifier 17. EFFECT: decreased nonlinear distortions, expanded frequency band. 2 dwg