DC-DC switching circuit based on variable resistor
A conversion circuit, DC-DC technology, applied in the direction of adjusting electrical variables, control/regulating systems, instruments, etc., can solve the problem of not being able to adjust the output voltage in real time, and achieve the effect of convenient operation
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Embodiment 1
[0026] Such as figure 1 , figure 2 As shown, a variable resistor-based DC-DC conversion circuit of the present invention includes a power input terminal VIN and a DC-DC controller connected to the power input terminal, and the DC-DC controller includes an internal drive or an external drive, The internal drive or the external drive is connected to the output terminal VOUT of the power supply, the output terminal VOUT of the power supply is connected to a variable resistor R1, the variable resistor R1 is connected to the input port FB of the DC-DC controller, and the variable resistor R1 is connected to a drive device;
[0027] The driving device includes a motor, a rotating shaft connected to the motor at one end, and a sheet connected to the other end of the rotating shaft, the rotating shaft and the sheet are connected by a spring, and the sheet is installed in the groove of the variable resistor R1.
[0028] The power supply input terminal VIN inputs DC current to the DC...
Embodiment 2
[0030] Based on Embodiment 1, the motor is provided with three gears including first gear, second gear, and third gear. The first gear of the shaft rotates clockwise to 90°, the second gear clockwise to 180°, and the third gear to 270°. Each gear corresponds to a different resistance value
Embodiment 3
[0032] Based on the above embodiments, the spring is a torsion spring. After the motor is started, the rotating shaft is driven to rotate, and the rotating shaft rotates to make the spring generate torque so that the sheet rotates in the groove of the adjustable resistor, thereby changing the resistance value of the variable resistor R1.
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