维修电磁炉必看（Maintenance electromagnetic oven must see）.docVIP

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维修电磁炉必看（Maintenance electromagnetic oven must see）.doc

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维修电磁炉必看（Maintenance electromagnetic oven must see）

维修电磁炉必看（Maintenance electromagnetic oven must see） Reason of tube burning in induction cooker After the electromagnetic oven tube 25N120 machine, check all the suspicious components, all components of the replacement, test before the important premise of the boot: 1, the power adjustment resistance to new, transferred to the middle! 2, first use 1 insurance instead of the original burned 10 insurance! (hair copper wire) prevent electric instant breakdown tube! 3, do not put the pot boot! Viewing phenomenon! As normal! Insurance is not broken well! Put the pan to see the current, low fire, 4A, middle fire, 5A high fire, 7A current is too large, please power off, adjust the power potentiometer. So, how big is the fuse? Whats the A number? Answer: the most desirable number of users in use is 3-5A, with no damage to the power tube.! If the electricity is 1, the fuse will fuse! Please check the suspect components again!. Rest assured that your 25N120 is not bad! Learn how to do it. What are you afraid of repairing the electromagnetic oven? Eight reasons for IGBT tube burning in electromagnetic oven [1] 0, 3UF/1200V, 5UF/400V resonant capacitor filter capacitor capacity becomes small, failure or bad, will lead to the electromagnetic oven LC resonant circuit frequency change, if we find two capacitors have a bad together to replace the OK. [2] IGBT excitation circuit due to abnormal pulse output of the oscillation circuit, not directly control the IGBT saturation, on and off, must pass through the drive circuit amplifies the pulse signal to complete, if the excitation circuit failure, high voltage will be married to IGBT pipe, IGBT pipe leads to instantaneous breakdown. [3] synchronous circuit abnormalities, synchronous circuit role is to guarantee to add to the IGBT tube, switch pulse front and IGBT pipe on the VCE pulse after extension synchronization, if this circuit is unusual, will burn IGBT tube. [4] 18V voltage anomaly, if this point is abnormal, it will cause the e