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长虹CN—7机芯是长虹“红太阳”、“红双喜”系列彩电中最具有代表性的大屏幕(74～86 cm)彩色电视机,小信号处理集成电路和微处理器分别采用:TB1227AN和TMP87CM38N,其代表机型有:(1)红太阳系列—T2981/A/C、T2982/A/C、T3418/A、T3419T/PT;(2)红双喜系列—R2916T、R2917T、R2918T、R2919T、R3415T、R3416T等。由于长虹CN—7机芯开关电源与NC—3、NC—2机芯开关电源基本一致,而NC—3机芯开关电源电路已在2002年5～7期详细介绍过,因此,在这里只作重
Changhong CN-7 movement is the most representative large screen (74 ~ 86 cm) color TV in Changhong “Red Sun” and “Double Happiness” series of color televisions. The small signal processing integrated circuits and microprocessors adopt the TB1227AN and TMP87CM38N, the representative models are: (1) Red Sun series-T2981 / A / C, T2982 / A / C, T3418 / A, T3419T / PT; (2) Double Happiness series -R2916T, R2917T, R2918T, R2919T, R3415T , R3416T and so on. As Changhong CN-7 movement switching power supply and NC-3, NC-2 movement switching power supply basically the same, and NC-3 movement switching power supply circuit in 2002 5 to 7 described in detail, so here only Made heavy