Abstract: A drive unit comprises a switching circuit and an abnormal signal generating circuit. The switching circuit is configured to be connected to an external time generating circuit, and is configured to switch a driving condition relating to a driving voltage of a voltage-driven element in a transitional period between a driving state and a non-driving state of the voltage-driven element based on a measurement time which is measured by using of the time generating circuit. The abnormal signal generating circuit is configured to generate an abnormal signal when an accurate measurement of the time using the time generating circuit is not executed.

Abstract: A drive unit comprises a first connector, second connector, switching element, and controller. The first connector is configured to be connected with a gate resistor of a voltage-driven element. The second connector is configured to be connected with a driving power source. A first input-output terminal of the switching element is connected to the first connector, and a second input-output terminal thereof is connected to the second connector. The controller is connected to a control terminal of the switching element, and controls a voltage input to the control terminal of the switching element. The controller has an error amplifier, reference power source, and switch. One input terminal of the error amplifier is connected to the reference power source, an other input terminal thereof is connected to the first connector, and an output terminal thereof is connected to the control terminal of the switching element.

Abstract: The present application provides a technique for a signal transmitting apparatus using a plane coil for a sending coil and a receiving coil respectively, so that the outer diameters of the sending coil and the receiving coil can be decreased, and a signal can be stably transmitted from a sending side to a receiving side. The signal transmitting apparatus disclosed in the present application is provided with: a sending coil driven by an inputted signal; a receiving coil configured to output a received signal in response to the sending coil being driven; a pre-processing circuit to which the received signal outputted by the receiving coil is inputted; and a detecting circuit configured to detect the inputted signal from a signal outputted by the pre-processing circuit.

Abstract: A signal transmitting apparatus that may suppress generation of a noise voltage attributable to a common mode voltage is provided. A transistor P1 is connected between a first terminal of a sending coil and a power supply voltage. A transistor N1 is connected between the first terminal and a ground voltage. A transistor P2 is connected between a second terminal of the sending coil wand the power supply voltage. A transistor N2 is connected between the second terminal and the ground voltage. In a period-PE1, a coil current flowing in a positive direction is generated by turning on the transistors P1 and N2 and turning off the transistors P2 and N1, and then the transistor N1 is turned on in response to turning off the transistor P1. In a period PE2, a coil current flowing in a negative direction is generated by turning off the transistors P1 and N2 and turning on the transistors P2 and N1, and then the transistor N2 is turned on in response to turning off the transistor P2.

Abstract: A drive unit comprises a first connector, second connector, switching element, and controller. The first connector is configured to be connected with a gate resistor of a voltage-driven element. The second connector is configured to be connected with a driving power source. A first input-output terminal of the switching element is connected to the first connector, and a second input-output terminal thereof is connected to the second connector. The controller is connected to a control terminal of the switching element, and controls a voltage input to the control terminal of the switching element. The controller has an error amplifier, reference power source, and switch. One input terminal of the error amplifier is connected to the reference power source, an other input terminal thereof is connected to the first connector, and an output terminal thereof is connected to the control terminal of the switching element.