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Push pull circuit using complementary transistor and CMOS dr

2016-05-08 09:44  
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Push pull circuit using complementary transistor and CMOS driving stage
It is using CMOS inverter 4049 as driving stage of inverter stage of TDA4700 's output signal and transistor T1, T2. Three inverters are parallel. Two output ends among them are separately adding to the base of two transistors in push pull circuit. Resistor R2 is used for controlling the circuit. When it can not guarantee enough voltage for SIPMOS tube's gate pole to offer a fixed potential, it can prevent the error breaking over of this tube. Capacitor C3 is used for shorting time constant R2CBE. Here, CBE is capacitor between base-emitter of transistor T.