Temperature checker
A calibrator and temperature measurement technology, applied in the field of temperature calibrator, can solve the problems of bulky function and expensive
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[0007] Embodiment 1: A kind of temperature calibrator
[0008] The invention relates to a temperature calibrator, which is made portable and used for calibrating the display value of a temperature measuring instrument in operation on site. Its circuit structure is as figure 1 As shown, it consists of a power supply 1, a display module 2, a single-chip microcomputer module 3, a photocoupler 4, a DC power supply voltage module 5, an input electronic switch module 6, a storage module 7, a filter amplifier circuit module 8, and an output electronic switch module 9. Wherein the single-chip microcomputer module 3 is used to generate the pulse width modulation signal, and the pulse width modulation signal is sent to the input electronic switch module 6 through the photocoupler 4, so that it controls the electronic switch according to the duty ratio of the pulse width modulation signal, and is used to turn on and turn off the DC stable voltage of the DC supply voltage module 5 . The...
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