Constant-current timing charger
A charger and rechargeable battery technology, applied in the electronic field, can solve the problems of the battery becoming garbage, waste, affecting battery capacity and life, etc.
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[0081] figure 1 , 2 , 3, 4, 5 examples of a constant current timing charger is an implementation of the workpiece example.
[0082] 1. Select components: the integrated circuit uses 78 series such as 7812, the triode adopts 8050, the sound chip in the sound body has no special requirements, the size of the piezoelectric ceramic chip in the sound body is determined according to the installation box, and the diode adopts surface-bonded diode , Adjustable resistance, and other resistance-capacitance parts have no special requirements.
[0083] 2. Making circuit boards and welding: press figure 2 The schematic diagram to make the circuit board, press figure 2 Schematic of soldered components.
[0084] The constant current voltage regulator is composed of a three-terminal voltage regulator circuit, a constant current adjustable resistor, and a constant current protection resistor: the input terminal of the three-terminal voltage regulator circuit is connected to the constant c...
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