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(6)行、场扫描小信号形成电路行、场扫描小信号形成电路由TB1251N輷訛輦、輧輮訛、輧輯訛、輰訛輧、輧輶訛脚外接元件和TB1251N内部相关电路构成。行振荡电路完全由TB1251N内部电路组成。TB1251N輧輯訛脚为行振荡电路供电端,只要外电路为行振荡电路提供的电源电压正常,行振荡电路便会启动进入振荡状态。行振荡电路的振荡频率由色副载波信号和行AFC电路输出的误差控制信号共同锁定。
(6) lines, the field scan small signal to form a circuit line, field scan small signal circuit formed by the TB1251N 輷 讹 辇, 輧 輮 correct, 輧 correct, 輰 讹 輧, 輧 輶 correct foot external components and TB1251N internal circuit. Line oscillation circuit entirely by the TB1251N internal circuit. TB1251N 輧 Edit foot erroneous foot for the oscillation circuit power supply terminal, as long as the external circuit for the line oscillator circuit to provide the normal supply voltage, the line oscillation circuit will start into the oscillation state. The oscillation frequency of the line oscillation circuit is locked by the color subcarrier signal and the error control signal output by the line AFC circuit.