A surgical instrument is disclosed. The surgical instrument includes an electric motor and a control circuit. The control circuit includes a plurality of logic gates and a monostable multivibrator. The monostable multivibrator is connected to a first one of the logic gates. The control circuit is configured to alter a rate of action of a function of the surgical instrument by controlling a speed of rotation of the electric motor based on a sensed parameter.

A surgical instrument is disclosed. The surgical instrument includes an electric motor and a control circuit. The control circuit includes a plurality of logic gates and a monostable multivibrator. The monostable multivibrator is connected to a first one of the logic gates. The control circuit is configured to alter a rate of action of a function of the surgical instrument by controlling a speed of rotation of the electric motor based on a sensed parameter.

A power converter for providing power to a load includes a buck converter having a DC input and a DC output and that is configured to receive a DC voltage at the DC voltage input and provide DC output voltage at the DC output. The converter also includes a voltage monitor that monitors a voltage provided at the DC output and a selectively connectable transient suppression circuit connected across that DC output and connected to the voltage monitor. The selectively connectable transient suppression circuit includes a dissipation circuit and a suppression circuit switch connected in series with the dissipation circuit that controls charge dissipation from the DC output into the dissipation circuit based on the voltage monitor determining that the voltage across the DC output is above a threshold.

A power converter for providing power to a load includes a buck converter having a DC input and a DC output and that is configured to receive a DC voltage at the DC voltage input and provide DC output voltage at the DC output. The converter also includes a voltage monitor that monitors a voltage provided at the DC output and a selectively connectable transient suppression circuit connected across that DC output and connected to the voltage monitor. The selectively connectable transient suppression circuit includes a dissipation circuit and a suppression circuit switch connected in series with the dissipation circuit that controls charge dissipation from the DC output into the dissipation circuit based on the voltage monitor determining that the voltage across the DC output is above a threshold.

A surgical instrument is disclosed. The surgical instrument includes a shaft, a sensing array and a fluid detection circuit. The sensing array is positioned within the shaft. The fluid detection circuit is electrically coupled to the sensing array, and is configured to determine when a fluid originating from an environment external to the shaft is present within the shaft.

A power module and a memory device are disclosed. The power module includes: a voltage raise unit for outputting a power voltage; an enabling unit connected to the power output for generating and outputting an enabling signal; a control unit, includes: an oscillator, a pulse generator, and an OR operation unit; the oscillator generates a delayed pulse control signal with a certain period; the pulse generator connects to the output terminal of the enabling unit for receiving the enable signal, synchronously generates an instant pulse control signal; the OR operation unit performs OR calculation to the delay pulse control signal and the instant pulse control signal to generate a boost control signal. The output end of the control unit connects to the voltage raise unit, and outputs the boost control signal to the voltage raise unit. The above-mentioned power module has a high transient response capability and maintains the stability of the output power voltage.

A power module and a memory device are disclosed. The power module includes: a voltage raise unit for outputting a power voltage; an enabling unit connected to the power output for generating and outputting an enabling signal; a control unit, includes: an oscillator, a pulse generator, and an OR operation unit; the oscillator generates a delayed pulse control signal with a certain period; the pulse generator connects to the output terminal of the enabling unit for receiving the enable signal, synchronously generates an instant pulse control signal; the OR operation unit performs OR calculation to the delay pulse control signal and the instant pulse control signal to generate a boost control signal. The output end of the control unit connects to the voltage raise unit, and outputs the boost control signal to the voltage raise unit. The above-mentioned power module has a high transient response capability and maintains the stability of the output power voltage.

The resolution of a time to digital converter (TDC) is improved by using a gain stage at the input of the fine TDC. A delay line receives a pulse corresponding to the time information and recirculates the pulse in the delay line by coupling an output of the delay line to an input of the delay line. An integrating fine TDC receives a number of pulses from the delay line corresponding to the desired gain.

The resolution of a time to digital converter (TDC) is improved by using a gain stage at the input of the fine TDC. A delay line receives a pulse corresponding to the time information and recirculates the pulse in the delay line by coupling an output of the delay line to an input of the delay line. An integrating fine TDC receives a number of pulses from the delay line corresponding to the desired gain.

A power supply apparatus that can realize ripple reduction, and an electronic control unit including the power supply apparatus are provided. In view of this, a PWM controller generates a PWM signal, and a PFM controller generates a PFM signal having a phase independent of the PWM signal. A level-fixed period generating circuit sets a level-fixed period having a start timing at a selection timing set to an edge of the PFM signal. A mode selecting circuit selects, at the selection timing and as a switching control signal, the PWM signal instead of the PFM signal, and controls a logic level of the switching control signal in the level-fixed period starting at the selection timing, such that the logic level becomes a fixed logic level.