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海信TC2139系列彩电,包括:海信TC-2139、TC-2139C、TC-2151、TC-2165、TC-2166、TC-2179、TC-2180、TC-2182。小信号处理电路采用三洋单片小信号处理电路LA7687A,微处理器采用LC864512-5C77,开关电源采用常见的三洋A3型由分立元件组成的开关电源。该系列彩电围绕误差取样放大电路和微处理器保护专用端口,设计了多路过流、失压保护电路,当开关电源、
Hisense TC2139 series of color TV, including: Hisense TC-2139, TC-2139C, TC-2151, TC-2165, TC- 2166, TC- 2179, TC- 2180, TC- 2182. Small signal processing circuit using Sanyo single-chip small signal processing circuit LA7687A, microprocessor using LC864512-5C77, switching power supply using the common Sanyo A3-type discrete components composed of switching power supply. The series of color TV around the error amplifier sampling and microprocessor protection dedicated port, designed multi-channel over-current, loss of voltage protection circuit, when the switching power supply,