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苏州组装的飞利浦Aunbis—SBB机芯彩电型号有:21B9、25B9、29B9等。该机芯彩电开关电源主要由UC3842BN控制集成电路及场效应开关管V7513组成,属于它激式、并联型开关电源。该开关电源采用间接稳压法,并通过切断对行振荡集成块TDA8362(36)脚的8.3V供电来实现待机,因而省去目前流行的稳压、待机控制过程中的光电耦合器,使开关电源电路得以简化。该机芯25B9型开关电源主输出电压为115V(21B9型稍低一些,29B9型稍高一些)。开关电源电路如图1所示。
Suzhou assembly Philips Aunbis-SBB movement color TV models are: 21B9, 25B9, 29B9 and so on. The movement of color TV switching power supply mainly by the UC3842BN control integrated circuits and field-effect switch V7513 components, it is excited, parallel switching power supply. The switching power supply using indirect voltage regulator, and by cutting off the line oscillation manifold TDA8362 (36) feet 8.3V power supply to achieve standby, thus eliminating the current popular regulator, standby control optocouplers, the switch Power circuit is simplified. The movement 25B9-type switching power supply main output voltage of 115V (21B9 slightly lower, 29B9 slightly higher). Switching power supply circuit shown in Figure 1.