电磁炉断续加热（Intermittent heating of induction cooker）.docVIP

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电磁炉断续加热（Intermittent heating of induction cooker）.doc

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电磁炉断续加热（Intermittent heating of induction cooker） Induction cooker, intermittent heating, Ye Quanlin, -[2008-07-01] [from, my article] read: 3 -------------------------------------------------------------------------------- When the electromagnetic oven intermittent heating fault, the fault coverage for the general: the main power rectifier +305V power supply circuit, current detection circuit, circuit voltage comparison circuit, and electromagnetic furnace control circuit and other components damaged. At the same time, consideration should be given to customers in the use of the electromagnetic oven, due to excessive force to start switch, the control circuit board solder sealing off, or cause circuit damage. All of them lead to the above faults. Maintenance method Under the condition of fittings, it can be replaced by the control panel first. If the test machine is normal, the control panel is damaged and should be repaired or replaced. If the trouble has not been removed after the test of the induction cooker, the fault shall be maintained or replaced on the main circuit board. In order to distinguish and reduce the potential range of failure, in order to save the maintenance time and improve the quality of maintenance, the above alternative methods are used instead of maintenance. Maintenance of power supply circuit; The DC voltage of the rectifier bridge is normal to the ground +305V voltage by using the 500 type three meter DC voltage 500V gear. When the voltage is low to +205V, the capacitor is generally considered to be C4 (5 F/275V) failure or open circuit. If the positive resistance of the rectifier bridge becomes larger or fails, the intermittent heating fault occurs in the induction cooker. Troubleshooting after replacement of damaged components. Two 、 maintenance of current detection circuit; The first 500 three meter resistance 100 ohm, road detection in CT1 current transformer (WX22006A) secondary winding resistance value is normal 300, if less than 3