Accompanying sound balance circuit between TV receiver channels
A technology of TV receiver and equalization circuit, which is applied in the direction of TV, color TV, color TV parts, etc., can solve the problem of unbalanced sound, achieve the effect of sound balance and avoid sound unbalanced phenomenon
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Embodiment 1
[0013] Embodiment 1, during implementation, components can be installed on the circuit board according to the circuit diagram in FIG. 1 . The circuit outside the virtual frame in Fig. 1 is an audio amplifier circuit composed of TDA1013B integrated circuit, which belongs to the prior art, and will not be described in detail here.
[0014] The connection relationship of the negative pressure freewheeling circuit is as described in the summary of the invention, and will not be described in detail again. The parameters of the main components are marked in the attached drawings.
[0015] The diodes in Figure 1 can be 1N5404 or 1N4007.
Embodiment 2
[0016] Embodiment 2, as shown in Figure 2 during implementation, is basically the same as Embodiment 1, except that the optocoupler PC817 is replaced by a triode BG1. When in use, a resistor R3 needs to be connected to the collector of the triode BG1, and a power supply of 7V is connected through the resistor R3.
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Abstract
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