Electromagnetic furnace maintenance skills
At the same time, remember to replace the IGBT maintenance drive tube change together (whether it is good or bad; many people have bad measurement did not change; the price is not too long to burn IGBT; two audions up to 1 yuan; a IGBT to turn over ten) to check 0.2 UF 0.3UF 5UF capacitor; everything is ready in the exchange of 220V, a series of 60-100W lighting, and pan, connect the power supply: 1 if the red bulb (suitable for inserting 220V after standby indicator), open the electromagnetic oven power, the bulb flicked on and off, (and plug 220V standby indicator light is not bright, open) the electromagnetic oven power supply, a light bulb that is dark is a dark light power resume; that the electromagnetic oven has the basic OK. 2. if the bulb is bright, it indicates that the IGBT pipe is fully connected. At this point, if the light bulb is removed, the IGBT tube must be burned! It should be the main driver of resonant capacitor voltage rectifier circuit. 3 if the bulb is dark red, open the electromagnetic oven power, lighting brightness unchanged. It should be the main control panel power supply side power circuit of microcomputer. 4 if the bulb is dark red, open the electromagnetic oven power, a light bulb of a secretly flashing, but the pot up light bulb is very bright; to lift the pan fried IGBT, most should check the CPU disc drive line is this method can prevent damage to the coil can not ensure the working principle of the first chapter, no danger of anything going wrong; electromagnetic oven
The working principle of induction cookerWhen the electromagnetic oven is in normal operation, the alternating magnetic field produced by the coil on the electromagnetic oven plate is repeatedly cut and changed at the bottom of the cooker, so that the ring current (Wo Liu) is generated at the bottom of the cooker, and a small resistor is used to generate electricity
Main function of induction cooker1. Ceramic plate: imported high temperature resistant crystalline ceramic plate.2 、 high voltage main board: constitute the main current loop.3 、 low voltage main board: computer control function.4, LED circuit board: display the working state and transfer operation instructions.5, wire coil: high-frequency alternating current into alternating magnetic field6 fan components: heat sink auxiliary component (FAN).7, IGBT: through the low current signal, control large current on-off (IGBT).8 、 bridge rectifier block: convert AC power to DC power supply9 、 thermistor parts: the heat signal is transmitted to the control circuit.10 、 thermal switch module: sensing the IGBT operating temperature, thereby protecting the IGBT due to overheating damage.
