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一、索尼KV—2965MTJ型彩电开关电源采用全功能一体化(大功率开关管、脉宽调制管、取样放大电路以及过流保护电路等)电源厚膜电路STR—S5741,使电源整体电路更加简洁,提高了各方面的电路性能及可靠性,在输入电压110～240V范围内可使整机正常工作。 1.整流限流电路(见图1),由R604、Q601、D602等组成限流电路,其工作原理是:刚开机时,由于整流电图1索尼KV—2965MTJ整流限流电路
First, the Sony KV-2965MTJ-type color TV switching power supply using full-featured integrated (high-power switch, pulse width modulation tube, sampling amplifier circuit and over-current protection circuit, etc.) Power thick film circuit STR-S5741, the power supply overall circuit more concise , Improve all aspects of the circuit performance and reliability, the input voltage 110 ~ 240V range can make the normal work. 1. Rectifier current limiting circuit (see Figure 1), by the R604, Q601, D602 and other components of the current limiting circuit, the working principle is: just turned on, due to the rectifier Figure 1 Sony KV-2965MTJ rectifier current limiting circuit