The basic principle of pulse width modulation (PWM): The control method is to control the on and off of the switching devices in the inverter circuit so that a series of pulses with equal amplitude ar...
This paper discusses the design of a basic feedback oscillator, using a lumped element resonator with varactor control. A design center frequency of 1GHz has been chosen, with a tuning bandwidth of 50...
At present, in China's DWDM backbone transmission network, the system basically adopts a span of about 80km for EDFA optical amplification and 500km~600km for 3R (timing, shaping and amplification) el...
Author: Li Shengyuan In the feedback circuits of single-ended flyback circuits such as TOP and 3842, TL431 and PC817 are often used as reference, isolation and sampling. The typical application circui...
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