Amateur testing and adjustment of induction cooker output power

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Amateur testing and adjustment of induction cooker output power [Copy link]

There are multiple heating temperature selection buttons on the operation panel of the induction cooker, and there is also an output power adjustment potentiometer on the control circuit board inside the cooker. For example, the Rongsheng brand CR-16B microcomputer induction cooker has five-speed fire selection buttons from 70 to 240W, and the output power adjustment potentiometer of the cooker is DW1/103; while the Fujibao brand 1H-1OOOH induction cooker has five-speed fire selection buttons from 80 to 240W, and its output power adjustment potentiometer is VDL/203. After the induction cooker is damaged and repaired, a simple amateur test and adjustment should be made to its output power (heating) condition.

1. The common potentiometers for adjusting the output power of induction cookers are 10kΩ and 20kΩ (nominal 103 and 203). To prevent damage to the induction cooker due to misoperation, remember that if you turn the knob clockwise, the greater the resistance, the smaller the output power; if you turn the knob counterclockwise, the smaller the resistance, the greater the output power.

2. According to the product manual or the specifications of the AC fuse on the induction cooker power board, do a simple amateur test and adjustment. Take Fujibao 1H-1000H 700 - 130OW induction cooker as an example. The rated current of its AC fuse is 1OA. The adjustment steps are as follows.

(1) A 62T51 0-30A AC ammeter produced by Changzheng Group is connected in series in the power supply circuit of the induction cooker;

(2) After the induction cooker is started, select the highest heating level (240) and carefully adjust the output power adjustment potentiometer VDL so that the ammeter indicates 8A (preferably 80% of the rated current). At this time, the heating speed is fast and the IGBT tube power dissipation is small.