Practical training examination device for SPWM variable-frequency speed regulation system
A technology of variable frequency speed regulation and practical training, which is applied in the direction of educational appliances, instruments, teaching models, etc., can solve problems such as large learning obstacles, and achieve the effect of improving overall analysis and professional skills
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[0009] Below in conjunction with accompanying drawing and embodiment the present invention is specifically introduced as follows:
[0010] A training and assessment device for SPWM frequency conversion speed regulation system, which has a square box, including SPWM frequency conversion speed regulation circuit (1), auxiliary circuit (2) and transparent panel (3), characterized in that: the SPWM frequency conversion speed regulation The circuit (1) is located at the bottom of the box, including input EMI (01), input rectification (02), input filter (03), single-phase bridge inverter circuit (04), ICL8038 and LM311 control circuit (05), M57962L driver circuit (06), CD4013 protection circuit (07), the ICL8038 and LM311 control circuit (05) includes SPWM1 and SPWM2 waveform outputs, and the CD4013 protection circuit (07) includes a CD4013 double D flip-flop with a Q output terminal, so The transparent panel (3) is located around and on the upper part, including power switch, fault...
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