Drive control integrated circuit special for microwave oven

Abstract

The invention discloses a drive control integrated circuit special for a microwave oven, and relates to circuit structures, in particular to the improvement technology of a drive circuit structure. The drive control integrated circuit special for the microwave oven is composed of a microcontroller, an integrated chip, a buzzer and six relays. A buzzer drive circuit and six relay drive circuits in the integrated chip are connected with the buzzer and the six relays respectively. A single-chip microcomputer detection circuit and a gate signal detection circuit are further arranged in the integrated chip. The output end of the single-chip microcomputer detection circuit is connected with a triode drive circuit and one relay drive circuit, the triode drive circuit is connected with the base electrode of a triode, the emitting electrode of the triode is grounded through a gate switch (remark: a Y end is grounded through the gate switch, when the switch is switched off, the Y end is suspended in midair, and when the switch is switched on, the Y end is grounded), and the collector electrode of the triode is connected with the three relay drive circuits. The input end of the gate signal detection circuit is connected with the gate switch, and the output end of the gate signal detection circuit is connected with a single-chip microcomputer. The drive control integrated circuit special for the microwave oven solves the problems that in the prior art, the number of peripheral elements is many, the size of a PCB is large, and the design cost of a system and machining reject ratio are high.

Description

technical field [0001] The invention relates to a circuit structure, in particular to an improvement technology of a driving circuit structure. Background technique [0002] Microwave ovens are widely accepted by the market for their convenience and safety. In order to realize various functions, the microwave oven needs to switch the function and mode by controlling the on / off of the relay. In order to realize the on / off of the relay, the microcontroller sends a control signal to control the on / off of the relay through the driving circuit. The microcontroller itself cannot directly drive the relay, nor can it suppress the voltage spikes generated by the on / off of the relay. Therefore, a drive circuit needs to be connected between the microcontroller and the relay. The drive circuit receives the signal from the microcontroller, and through the drive The circuit realizes the on / off of the relay. In addition, a buzzer is needed in the microwave oven, and the buzzer also need...

AI Technical Summary

Problems solved by technology

[0003] The invention provides a dedicated drive control integrated circuit for microwave ovens. The invention solves the problems of the prior art, such as the large number of peripheral components, the large size of the PCB circuit board, the cost of system design, and the high rate of defective processing.

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