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TDA7057AQ伴音低放电路(由V301、VD301、C306组成)的关机静噪电路,与LA4287伴音低放电路的关机静噪电路相同,本处简略。因为TDA7057AQ内部含有过热保护电路,所以在TDA7057AQ输出端子上省去了相应的保护电路。 (3)TA8256H组成的伴音低放电路:海信TB1238机心以TA8256H为核心组成的伴音低放电路的机器有:TC2510G、TC2988A、TC2988、TC2940A、TC2975GD、TC2999、TC2999A等。
TDA7057AQ sound low discharge circuit (composed of V301, VD301, C306) shutdown mute circuit, and LA4287 sound low discharge circuit shutdown mute circuit the same, the Department briefly. Because TDA7057AQ contains over-temperature protection circuit, so the TDA7057AQ output terminal eliminates the need for the appropriate protection circuit. (3) Composition of TA8256H sound low discharge circuit: Hisense TB1238 movement to TA8256H as the core of the sound low discharge circuit of the machine are: TC2510G, TC2988A, TC2988, TC2940A, TC2975GD, TC2999, TC2999A and so on.