Micro-power wireless digital transmitter
A transmitter, micro power consumption technology, applied in the direction of force/torque/power measuring instrument calibration/test, measuring device, instrument, etc., can solve the problems of cumbersome adjustment of magnification, large offset voltage, high cost, etc. Equipment technical performance, low temperature drift and offset voltage, the effect of ensuring accuracy
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[0014] refer to figure 1 , the micro-power wireless digital transmitter includes an instrument integrated amplifier 1, a single-chip microcomputer 2, a carrier conditioning module 3, and the transmitter is also respectively connected with a sensor (not shown) and a power supply 4, and each composition can be assembled and installed in a box.
[0015] The instrument integrated amplifier 1 includes an instrument amplifier integrated chip 11 and a converter 12; the instrument amplifier integrated chip 11 is a differential input instrument amplifier integrated chip (AD620) that adopts dual power supply balanced power supply for weak signals in terms of conditioning and transformation principles. It is characterized by small size, low power consumption, extremely low temperature drift and offset voltage. The input end of the instrumentation amplifier integrated chip 11 is connected to a sensor (not shown in the figure), and its output end is connected to a converter 12. The instrume...
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