ABSTRACT
The microwave power supply adopts phase-control three-phase AC voltage regulator technology to control the magnetron and then controls the output power; the output power of the magnetron is set through the user carrying out operation for SCM as needed. The workflow of the system is as shown in Figure 1; 380V industrial electricity is sent to the step-up transformer primary after voltage regulator treatment, and it will be output via secondary after conversion to high voltage alternating current; and then carry out rectification, filtration and voltage stabilization treatment through rectifier circuit, filter circuit and regulator circuit respectively, and then apply the stable and adjustable DC in thousands of volts through treatment to the cathode of magnetron. Throughout the design, the role of A/D converter is that display the module display
1 INTRODUCTION
In order to achieve stable and efficient output power of microwave power supply, the author adopts ATmega16 L SCM as the control device of the whole electrical power unit; the SCM has high cost performance, 8-bit AVR microprocessor with high performance and low power and advanced RISC structure; its kernel has rich instruction set with 32 general working registers. All registers are directly connected to the Arithmetic Logic Unit (ALU), so that an instruction can access to two separate registers in one clock cycle. This structure greatly improves code efficiency and its data throughput is up to 10 times faster than ordinary CISC microcontroller. It is these characteristics that lay foundation for the perfect hardware design in the future.
