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CN-224233855-U - Dual-voltage heating element resistance control circuit

CN224233855UCN 224233855 UCN224233855 UCN 224233855UCN-224233855-U

Abstract

The utility model discloses a dual-voltage heating element resistor control circuit which comprises a first input interface, a second input interface, a singlechip, a voltage detection module, a heating element resistor, a first control switch module, a second control switch module and a third control switch module, wherein the third connecting end of the heating element resistor is connected with the first input interface, one end of the voltage detection module is connected with a power input interface, the other end of the voltage detection module is connected with the singlechip, the first end of the first control switch module is connected with the singlechip, the second end of the first control switch module is connected with the first connecting end of the heating element resistor, the third end of the first control switch module is connected with the first input interface, the first end of the third control switch module is connected with the singlechip, the second end of the third control switch module is connected with the first connecting end of the heating element resistor, and the third end of the third control switch module is connected with the second input interface.

Inventors

  • YAO HUIXIONG
  • SU GUANXIAN
  • ZHOU SHANZHI

Assignees

  • 东莞佐佑电子科技有限公司

Dates

Publication Date
20260512
Application Date
20250427

Claims (10)

  1. 1. The double-voltage heating element resistance control circuit is characterized by comprising a first input interface, a second input interface, a singlechip, a voltage detection module, a heating element resistance, a first control switch module, a second control switch module and a third control switch module; The heating element resistor is provided with a first connecting end, a second connecting end and a third connecting end, and the third connecting end of the heating element resistor is connected with the first input interface; one end of the voltage detection module is connected with the power input interface, and the other end of the voltage detection module is connected with the singlechip; The first end of the first control switch module is connected with the singlechip, the second end of the first control switch module is connected with the first connecting end of the heating element resistor, and the third end of the first control switch module is connected with the first input interface; The first end of the second control switch module is connected with the singlechip, the second end of the second control switch module is connected with the second connecting end of the heating element resistor, and the third end of the second control switch module is connected with the second input interface; the first end of the third control switch module is connected with the singlechip, the second end of the third control switch module is connected with the first connecting end of the heating element resistor, and the third end of the third control switch module is connected with the second input interface.
  2. 2. The dual-voltage heating element resistor control circuit of claim 1, wherein the first control switch module comprises a first switch control device, a first power device and a first resistor, wherein a first end of the first switch control device is connected with a power supply VCC, a second end of the first switch control device is connected with a second end of the first power device, a third end of the first switch control device is connected with a first connection end of the heating element resistor, a fourth end of the first switch control device is connected with a first input interface, a first end of the first power device is connected with one end of the first resistor, a third end of the first power device is grounded, and the other end of the first resistor is connected with a singlechip.
  3. 3. A dual voltage heating resistor control circuit as claimed in claim 2 wherein the first switching control device is a relay.
  4. 4. A dual voltage heating resistor control circuit according to claim 2, characterized in that the first power device is a triode or MOS transistor.
  5. 5. The dual-voltage heating element resistor control circuit according to claim 1, wherein the second control switch module comprises a second switch control device, a second power device and a second resistor, a first end of the second switch control device is connected with a power supply VCC, a second end of the second switch control device is connected with a second end of the second power device, a third end of the second switch control device is connected with a second input interface, a fourth end of the second switch control device is connected with a second connection end of the heating element resistor, a first end of the second power device is connected with one end of the second resistor, a third end of the second power device is grounded, and the other end of the second resistor is connected with a singlechip.
  6. 6. A dual voltage heating resistor control circuit according to claim 5 wherein the second switching control device is a relay.
  7. 7. A dual voltage heating resistor control circuit according to claim 5 wherein the second power device is a triode or MOS tube.
  8. 8. The dual-voltage heating element resistor control circuit according to claim 1, wherein the third control switch module comprises a third switch control device, a third power device and a third resistor, a first end of the third switch control device is connected with a power supply VCC, a second end of the third switch control device is connected with a second end of the third power device, a third end of the third switch control device is connected with a second input interface, a fourth end of the third switch control device is connected with a first connection end of the heating element resistor, a first end of the third power device is connected with one end of the third resistor, a third end of the third power device is grounded, and the other end of the third resistor is connected with a single chip microcomputer.
  9. 9. A dual voltage heating resistor control circuit according to claim 8, characterized in that the third switching control device is a relay.
  10. 10. A dual voltage heating resistor control circuit according to claim 8 wherein the third power device is a triode or MOS tube.

Description

Dual-voltage heating element resistance control circuit Technical Field The utility model relates to the technical field of instant heating, in particular to a resistance control circuit of a dual-voltage heating body. Background In order to cope with dual-voltage input, the existing heating element resistance control circuit is often provided with two heating resistors connected in parallel, then a heating loop corresponding to the heating resistors is controlled to work, so that the manufacturing cost is high and the space is occupied, and when one heating resistor works, the other heating resistor is in an idle state, so that the heating resistor utilization rate is low. Therefore, the existing heating element resistance control circuit has the problems of high manufacturing cost, space occupation and low heating resistance utilization rate. Disclosure of Invention The utility model aims to overcome the defects, and provides the dual-voltage heating element resistance control circuit which is capable of effectively reducing manufacturing cost, saving space and achieving high heating resistance utilization rate. In order to achieve the above object, the present utility model is specifically as follows: A dual-voltage heating element resistance control circuit comprises a first input interface, a second input interface, a singlechip, a voltage detection module, a heating element resistance, a first control switch module, a second control switch module and a third control switch module; The heating element resistor is provided with a first connecting end, a second connecting end and a third connecting end, and the third connecting end of the heating element resistor is connected with the first input interface; one end of the voltage detection module is connected with the power input interface, and the other end of the voltage detection module is connected with the singlechip; The first end of the first control switch module is connected with the singlechip, the second end of the first control switch module is connected with the first connecting end of the heating element resistor, and the third end of the first control switch module is connected with the first input interface; The first end of the second control switch module is connected with the singlechip, the second end of the second control switch module is connected with the second connecting end of the heating element resistor, and the third end of the second control switch module is connected with the second input interface; the first end of the third control switch module is connected with the singlechip, the second end of the third control switch module is connected with the first connecting end of the heating element resistor, and the third end of the third control switch module is connected with the second input interface. The utility model further discloses a power supply control device, which comprises a first control switch module, a first power device and a first resistor, wherein the first end of the first control switch module is connected with a power supply VCC, the second end of the first control switch module is connected with the second end of the first power device, the third end of the first control switch module is connected with the first connecting end of the heating element resistor, the fourth end of the first control switch module is connected with a first input interface, the first end of the first power device is connected with one end of the first resistor, the third end of the first power device is grounded, and the other end of the first resistor is connected with a singlechip. The utility model further provides that the first switch control device is a relay. In the utility model, the first power device is a triode or a MOS tube. The utility model further discloses a single-chip microcomputer control device, which comprises a first control switch module, a second power device and a second resistor, wherein the first end of the first control switch module is connected with a power supply VCC, the second end of the first control switch module is connected with the second end of the first power device, the third end of the first control switch module is connected with a first input interface, the fourth end of the first control switch module is connected with the first connecting end of the heating element resistor, the first end of the first control switch module is connected with one end of the first resistor, the third end of the first control switch module is grounded, and the other end of the first control switch module is connected with the single-chip microcomputer. The utility model further provides that the second switch control device is a relay. In the utility model, the second power device is a triode or a MOS tube. The utility model further discloses a three-phase power supply device, which comprises a third control switch module, a third power device and a third resistor, wherein the first end of the third swi