Electronics Help Care electronics circuit diagram
Audio amplifier 2X300W using LM4702:
This is an audio amplifier 2X300W using an LM4702 IC. The IC is also used with two pair transistors to make 300+300-watt outputs. we can use 50-0-50 voltage to 85-0-85 voltage depending on the IC. we can see the voltage listed in the diagram. here also need transistors. PNP and NPN transistors are needed in this circuit diagram.
for the main output transistor, we can use 2sc5200 and 2sa1943. 2sc5200 for the positive transistor and 2sa1943 for the negative transistors. here also need a driver transistor before the main transistor. we can use C2073 for a positive driver transistor. and A940 for the negative driver transistor. before the driver transistor, there was one positive transistor used on both sides. that we can use C2073.
The IC must need a good-quality heatsink. transistors also need a heatsink. the driver transistor also can be used with heatsink. without a heatsink, the driver transistors can’t be long-lasting. all transistor need separator to separate the voltage. because this circuit diagram runs using dual voltage positive negative and ground voltage.
If possible use a speaker protection circuit. because this circuit diagram is without speaker protection. as here use a transistor and high voltage to make high watts. then must need speaker protection to save the speakers. here is the speaker protection circuit diagram link Speaker protection
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