Driving circuit for preventing conduction pulse of circuit at power-on moment of system
The utility model provides a drive circuit for preventing conduction pulse of a circuit at the moment of system power-on, which comprises a resistor R65, a resistor R66, a resistor R67, a resistor R73, a triode U15, a triode U16, an MOS tube Q1, a triode Q2, a diode D13, a voltage stabilizing diode...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The utility model provides a drive circuit for preventing conduction pulse of a circuit at the moment of system power-on, which comprises a resistor R65, a resistor R66, a resistor R67, a resistor R73, a triode U15, a triode U16, an MOS tube Q1, a triode Q2, a diode D13, a voltage stabilizing diode D12 and a capacitor C38, one end of the resistor R67 is communicated and connected with an input end BRAKE-PWM and one end of the resistor R73, and the other end of the resistor R73 is connected with an external power supply; the driving end power supply only needs one resistor, one voltage stabilizing diode and one capacitor; the driving end is formed by building a common triode and a resistor, a special driving IC is not needed, a driving end signal can be driven only by adding a pull-up resistor to a signal power supply end, the situation that an instant unstable state of a driving circuit is generated due to interference of a system electrifying instant pulse signal is prevented, and meanwhile the cost is low; |
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