Abstract: A switch-mode DC-DC power converter includes one or more input terminals for receiving an input voltage from a voltage source, one or more output terminals for supplying an output voltage to a load, and a transformer coupled between the input and output terminals. The transformer includes at least one primary winding and at least one secondary winding. The converter also includes a primary switch coupled to control current through the at least one primary winding, a synchronous rectifier coupled to control current through the at least one secondary winding, and means for controlling switching operation of the synchronous rectifier by disabling switching of the synchronous rectifier for a defined time delay in response to receiving an input signal indicative of a startup of the DC-DC power converter, and enabling switching of the synchronous rectifier after the defined time delay has elapsed.

Abstract: A switch-mode DC-DC power converter includes one or more input terminals for receiving an input voltage from a voltage source, one or more output terminals for supplying an output voltage to a load, and a transformer coupled between the input and output terminals. The transformer includes at least one primary winding and at least one secondary winding. The converter also includes a primary switch coupled to control current through the at least one primary winding, a synchronous rectifier coupled to control current through the at least one secondary winding, and means for controlling switching operation of the synchronous rectifier by disabling switching of the synchronous rectifier for a defined time delay in response to receiving an input signal indicative of a startup of the DC-DC power converter, and enabling switching of the synchronous rectifier after the defined time delay has elapsed.

Abstract: In some examples, a device applies an electrical potential difference across a blood sample. The device measures an electrical signal that passes through the blood sample over a duration of time to obtain a plurality of measurements representing a measurement function of time. An accumulative property of the measurement function may be determined such that the accumulative property correlates to a blood coagulation characteristic.

Abstract: In some examples, a device applies an electrical potential difference across a blood sample. The device measures an electrical signal that passes through the blood sample over a duration of time to obtain a plurality of measurements representing a measurement function of time. An accumulative property of the measurement function may be determined such that the accumulative property correlates to a blood coagulation characteristic.

Abstract: In some examples, a device applies an electrical potential difference across a blood sample. The device measures an electrical signal that passes through the blood sample over a duration of time to obtain a plurality of measurements representing a measurement function of time. An accumulative property of the measurement function may be determined such that the accumulative property correlates to a blood coagulation characteristic.

Abstract: In some examples, a device applies an electrical potential difference across a blood sample. The device measures an electrical signal that passes through the blood sample over a duration of time to obtain a plurality of measurements representing a measurement function of time. An accumulative property of the measurement function may be determined such that the accumulative property correlates to a blood coagulation characteristic.