Electronic electrodeless noise reduction adjustment device

A technology of adjusting device and noise reduction, applied in the components of pumping device for elastic fluid, pump control, non-variable-capacity pump, etc., can solve problems such as waste of electric energy and inaccurate judgment of detection signal.

CN109737086AInactive Publication Date: 2019-05-10江苏餐加科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2019-05-10
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses an electronic electrodeless noise reduction adjustment device. The electronic electrodeless noise reduction adjustment device comprises a shell and a resistor, and is characterized in that the input end of the resistor is connected to the output end of an element U4, the negative electrode input end of the element U4 is earthed, the positive electrode input end of the element U4 is connected to a resistor R2, and the other end of the resistor R2 is connected to a pin 3 of a coupler U3. A PID controller U10 of the device can accurately judge a detection result of a thermocouple transducer U1, and the PID controller U10 can change the number of draught fans to be started according to the internal temperature of the loading resistor, thereby saving electric energy.
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Description

technical field

[0001] The invention relates to the technical field of adjustment devices, in particular to an electronic stepless noise reduction adjustment device. Background technique

[0002] The existing high-power resistors used to test the load capacity of generators, power supplies, UPS and other equipment are generally made in the form of forced air cooling by cooling fans in order to simplify design, reduce volume, and reduce costs. Conventional automatic load resistors will be equipped with axial flow fans to cool the load with forced air, and the noise reduction treatment on the automatic load resistor needs a special stepless noise reduction adjustment device to complete, the existing automatic load resistor When the stepless noise reduction adjustment device heats up the automatic load resistors, all the fans on the automatic load resistors will be turned on, resulting in a waste of electric energy, and the automatic load resistor stepless noise reduction adjus...

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Embodiment Construction

[0014] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.

[0015] Such as figure 1 As shown, an electronic stepless noise reduction adjustment device includes a shell body and a resistor, the input end of the resistor is connected to the output end of the element U4, and the negative input end of the element U4 is grounded, and the positive input end of the element U4 The resistor R2 is connected, and the other end of the resistor R2 is connected to the pin 3 of the coupler U3, the pin 2 and the pin 4 of the coupler U3 are both grounded, and the pin 1 of the coupler U3 is connected to the pin of the element U2 output terminal, the negative output terminal of the component U2 is grounded, and the positive input terminal of th...