問答

熱點問題

• What is the reason why the high frequency PMOS cannot be turned off in the ultrasonic drive circuit?
• What is the function of the three transistors in the circuit?
• The output of the op amp circuit is saturated when the current is zero. How to analyze it?
• Can the differential amplifier circuit of this K-type thermocouple work normally?
• How do you see the parameters of the mos tube?
• How to improve the offset voltage generated by the input of the op amp?
• What is the reason for the triac PWM dimming, one of which has no effect on the thyristor?
• How to detect PCB grounding?
• Will the triode be burned out by the high current caused by the high level when it is used as the switching acceleration capacitor?
• A switch COM is pressed and connected to a high level, and how to connect after the nmos tube is turned on?
• How to design LLC resonant circuit?
• Ask the reason why the device will automatically restart when the power supply and battery are switched without gaps?
• What should I pay attention to when switching from high-level IO port to low-level IO port?
• Why is there a power supply at both ends of the transistor of this circuit?
• The problem that the single-chip microcomputer drives the thyristor to control the AC contactor through the optocoupler.
• High-voltage circuit do not know how to choose the topology?