论文部分内容阅读
②当需要点亮液晶彩电时,微控制器输出的ON/OFF信号为高电平,经R87加到Q1的基极,控制Q1导通,其集电极输出低电平,进而使Q2导通,于是CNl的①、②脚输入的12V电压经R10、导通的Q2加到BIT3106的⑥脚和(12)脚,BIT3106内部振荡电路开始工作,其振荡频率由⑧、⑨脚外接的定时电阻和定时电容大小决定。振荡电路工作后,产生振荡脉冲,经分频后,
② When you need to light the LCD color TV, the microcontroller output ON / OFF signal is high, the R87 added to the base of Q1, the control Q1 is turned on, the collector output low, so that Q2 is turned on , So CNl ①, ② foot input 12V voltage through R10, Q2 turned on BIT3106 added to the feet and (12) feet, BIT3106 internal oscillation circuit to start the work, the oscillation frequency by ⑧, ⑨ pin external timing resistor And the timing capacitor size decision. Oscillation circuit work, the oscillation pulse, the frequency division,