Vehicle-mounted weighing amplifying filter circuit
A technology of amplifying filtering and on-board weighing, applied in differential amplifiers, detailed information of weighing equipment, DC-coupled DC amplifiers, etc. and other problems to prevent illegal dumping and theft and reselling
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[0023] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:
[0024] A vehicle-mounted weighing amplifier filter circuit, including a power supply module, an amplifier module, a filter module and a weighing processing module, wherein:
[0025] Such as figure 1 As shown, the power module includes a polar capacitor C1, a polar capacitor C2, a power switch S-PWR and a linear voltage regulator chip U1; one end of the power switch S-PWR is connected to the vehicle power supply, and the other end is connected to the polar capacitor C1 The positive pole of the polar capacitor C1 is connected to the IN port of the linear voltage regulator chip U1; the positive pole of the polar capacitor C2 is connected to the OUT port and the BRY port of the linear voltage regulator chip U1, and the negative pole is connected to the negative pole of the polar capacitor C1 and the linear voltage regulator chip U1. The GND port is co...
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