Second typical electromagnetic oven overhaul exercise - and non network（第节 典型电磁炉的检修演练--与非网）.docVIP

Second typical electromagnetic oven overhaul exercise - and non network（第2节 典型电磁炉的检修演练--与非网） General technical | hot maintenance drills - and non network website | special | second typical electromagnetic oven recruitment | Book column | blog | Technology Forum | my space Your position: article content second typical electromagnetic oven overhaul exercises Recommended for friends, print add, update on 2008-07-18 20:54:21 4.2.1 operation display circuit board overhaul Figure 4-32 shows the electromagnetic oven operation display circuit board, the circuit board by micro control switch, capacitor, resistor, light-emitting diode, crystal triode and operation display interface circuit (shift register) and so on. Figure 4-32 electromagnetic oven operation display circuit board When using an induction cooker, manual instructions are input by operating the microswitch on the display panel. That is when the press button, the operation display interface circuit (shift register) artificial instruction signal through the data line connected to the other end of the microprocessor. At the same time, the operation display interface circuit controls the display of the LED under the cooperation of the microprocessor, and realizes various functions of the electromagnetic oven. For example: the operation of the power switch, the power indicator will light; fire operation selection key, there will be a corresponding display light emitting diode thermal luminescence; operation timing button, will have the corresponding time of the light emitting display light emitting diode. When detecting the components on the display panel, it can be removed to detect. If the signal on the operation panel is detected, the energization test is required. The operation display circuit is shown in figure 4-33. The SW4 to SW8 in the drawing is a micro switch in an electromagnetic oven. The electromagnetic oven uses a microswitch with contacts. During operation, the signals of each inching switch are sent t