Abstract: Provided is an encoder capable of suppressing a decrease in detection accuracy. The encoder includes a moving plate, a light irradiator that irradiates a code pattern with light, and a light receiver. The code pattern includes a light guider and a non-light guider. A code pattern array is an array in which an error correction code for correcting an error is inserted into a position information data string that can specify a position. The light receiver includes a position detecting light receiving element that reads a position array of a code pattern and a position correcting light receiving element that outputs information for correcting an error.

Abstract: Provided is an encoder capable of achieving high position resolution without being finely divided, and capable of detecting a rotation angle or the like with high sensitivity. The encoder includes: rotary plate (2) having a plurality of reflection structures (10) repeatedly formed and code (20) including light reflector (21); irradiator (4) that irradiates the plurality of reflection structures (10) with light; and light receiver (5) that receives light reflected by the plurality of reflection structures (10). Each of the plurality of reflection structures (10) has a surface in a convex shape, and each of the plurality of reflection structures (10) has a width that is an integral multiple of a width of light reflector (21).

Abstract: An encoder includes rotatable plate including first and second patterns, light emission unit, and light receiving unit. The first pattern includes first and second unit regions. The first unit regions guide the light from light emission unit to the light receiving unit. The second unit regions are configured not to guide light from the light emission unit to the light receiving unit. The second pattern includes first and second unit regions. The first unit regions of the second pattern guide light from light emission unit to the light receiving unit. The second unit regions of the second pattern are configured not to guide light from the light emission unit to the light receiving unit. The first and second unit regions of the first pattern are reverse to the first and second unit regions of the second pattern in a direction perpendicular to a rotation direction of the rotatable plate.

Abstract: An electromagnetic resonance coupler includes a first transmission line on a top surface of a first dielectric layer, and a second transmission line on a top surface of a second dielectric layer. The first transmission line includes first and second resonance lines and first and second input-output lines. The second transmission line includes third and fourth resonance lines and third and fourth input-output lines. Third and fourth ground parts are provided separated from each other on the top surface of the second dielectric layer or the top surface of the first dielectric layer. The first resonance line and the third ground part are connected via a third connector, and the fourth resonance line and the fourth ground part are connected via a fourth connector.

Abstract: A gate driving circuit that controls a switching element includes: a startup switch which is provided between a gate voltage source and an output terminal; a termination switch which is provided between the output terminal and an output ground terminal; a startup resistor provided between a gate and a source of the startup switch; and a termination resistor provided between a gate and a source of the termination switch. At least one of the startup resistor or the termination resistor is configured to adjust a resistance value.

Abstract: A signal transmission apparatus includes: a first lead frame; a second lead frame spaced from the first lead frame; a primary semiconductor chip electrically connected to the first lead frame; a secondary semiconductor chip electrically connected to the second lead frame; and a signal isolator through which a signal is isolatedly transmitted from the primary semiconductor chip to the secondary semiconductor chip, the signal isolator having a first main surface that is bonded to both the first lead frame and the second lead frame.

Abstract: A charging-voltage generating unit generates voltage which charges a charge storage element from one input signal. An output-voltage generating unit generates voltage referenced to a signal output reference terminal and output at a signal output terminal from another input signal. A charging-voltage output terminal and first terminals of a first switching element and the charge storage element are connected at a first point. A charging-voltage output reference terminal is connected with a second terminal of the first switching element at a second point. An output-voltage output terminal, a first terminal of a second switching element, and the signal output terminal are connected at a third point. The output-voltage output reference terminal, a signal output reference terminal, and second terminals of the second switching element and the charge storage element are connected at a fourth point. The second and third points are interconnected.

Abstract: A signal generation device, including: an insulation element having transmission and reception units, and isolatedly transmitting an input wave introduced to the transmission unit, to thereby output an output wave from the reception unit; a power unit generating a voltage according to the output wave; a terminal having an output signal corresponding to the voltage; a generation unit generating a control signal; an insulation unit isolatedly transmitting the control signal, and generating a drive signal according to the control signal; a selection unit selecting whether to output the output signal to the terminal, according to the drive signal; a detection unit generating a detection signal indicating the state of the output signal, according to a detection wave obtained from the transmission unit; and a control signal adjustment unit adjusting the control signal according to the detection signal, the output signal being adjusted according to the adjustment of the control signal.

Abstract: A signal transmission device comprises: a first lead frame having a first major surface and a second major surface opposite to the first major surface; a second lead frame having a third major surface and a fourth major surface and isolated from the first lead frame, the fourth major surface located opposite to the third major surface; a transmission circuit that sends a transmission signal, the transmission circuit located on the first major surface of the first lead frame; a receiving circuit located on the third major surface of the second lead frame; and an electromagnetic resonance coupler located across between the second major surface of the first lead frame and the fourth major surface of the second lead frame to transmit the transmission signal, sent by the transmission circuit, to the receiving circuit in a contactless manner.

Abstract: A signal transmission apparatus includes: a first lead frame; a second lead frame spaced from the first lead frame; a primary semiconductor chip electrically connected to the first lead frame; a secondary semiconductor chip electrically connected to the second lead frame; and a signal isolator through which a signal is isolatedly transmitted from the primary semiconductor chip to the secondary semiconductor chip, the signal isolator having a first main surface that is bonded to both the first lead frame and the second lead frame.

Abstract: A signal transmission device comprises: a first lead frame having a first major surface and a second major surface opposite to the first major surface; a second lead frame having a third major surface and a fourth major surface and isolated from the first lead frame, the fourth major surface located opposite to the third major surface; a transmission circuit that sends a transmission signal, the transmission circuit located on the first major surface of the first lead frame; a receiving circuit located on the third major surface of the second lead frame; and an electromagnetic resonance coupler located across between the second major surface of the first lead frame and the fourth major surface of the second lead frame to transmit the transmission signal, sent by the transmission circuit, to the receiving circuit in a contactless manner.

Abstract: A high-frequency transmission device includes first and second resonators as ring-shaped wires each having an opening part at a part thereof, first and second input/output terminals each electrically connected to both resonators, a first ground shield formed on a plane different from planes on which both resonators are arranged, a second ground shield formed on a plane different from the planes on which both resonators and the first ground shield are arranged, and first and second ground wires each formed to surround peripheries of both resonators. The ground shields and the ground wires are respectively connected to each other. A dielectric wire is present between both ground wires, and the ground wires are not electrically connected to each other.

Abstract: A signal generation device, including: an insulation element having transmission and reception units, and isolatedly transmitting an input wave introduced to the transmission unit, to thereby output an output wave from the reception unit; a power unit generating a voltage according to the output wave; a terminal having an output signal corresponding to the voltage; a generation unit generating a control signal; an insulation unit isolatedly transmitting the control signal, and generating a drive signal according to the control signal; a selection unit selecting whether to output the output signal to the terminal, according to the drive signal; a detection unit generating a detection signal indicating the state of the output signal, according to a detection wave obtained from the transmission unit; and a control signal adjustment unit adjusting the control signal according to the detection signal, the output signal being adjusted according to the adjustment of the control signal.

Abstract: A resonant coupler includes, on the main surface of a first dielectric substrate: a first resonant line disposed in a circumferential shape and having proximate first and second ends; an input line into which a signal is inputted; and a first connecting line that grounds a first end of the first resonant line, and, similar to the first dielectric substrate, includes, on the main surface of a second dielectric substrate: a second resonant line; an output line; and a second connecting line. When viewed in a direction perpendicular to the main surface of the first dielectric substrate, the first resonant line and the second resonant line have substantially matching contours, and the first resonant line and the second resonant line have a combined shape that is symmetrical about a line.

Abstract: A signal reception circuit according to an aspect of the present disclosure includes: an input terminal; an input reference terminal; an output terminal; an output reference terminal; a normally-on type transistor that includes a first terminal connected to the output terminal, a second terminal connected to the output reference terminal, and a control terminal; a first detector circuit that detects an input signal applied between the input terminal and the input reference terminal, to apply an output signal between the output terminal and the output reference terminal; and a second detector circuit that detects the input signal, to apply a negative voltage pulse to the control terminal of the transistor with the output reference terminal as a reference.

Abstract: A signal transmission circuit includes an input terminal to which an input signal is input, a high-frequency oscillation circuit that outputs a high-frequency wave, a switching mixing circuit that modulates the high-frequency wave according to the input signal to generate modulated signals including first to third modulated signals, a first output terminal from which the first modulated signal is output, a second output terminal from which the second modulated signal is output, and a third output terminal from which the third modulated signal is output. While the first modulated signal is output from the first output terminal, the second and third modulated signals are not output. While the second modulated signal is output from the second output terminal, the first and third modulated signals are not output. While the third modulated signal is output from the third output terminal, the first and second modulated signals are not output.

Abstract: A drive device that drives a semiconductor switching device includes a capacitor and an output selection unit that selects whether or not to supply charge of the capacitor to a conduction control terminal of the semiconductor switching device, in which the output selection unit includes a first switching device and a second switching device, the charge of the capacitor is supplied to the conduction control terminal of the semiconductor switching device by the first switching device going to a conducting state, the charge is extracted from the conduction control terminal of the semiconductor switching device by the second switching device going to the conducting state, and a gate width of the second switching device is smaller than the gate width of the first switching device.

Abstract: In a signal generating circuit, a power supply terminal is connected with first terminals of a first switching element, a second switching element, and a third switching element; second terminals of the second switching element and the third switching element are connected to each other at a first node; the first node is connected with a ground and a first input terminal; a conduction control terminal of the third switching element is connected with the power supply terminal and the first terminal of the first switching element; a second terminal of the first switching element is connected with the first node; the second input terminal is connected with conduction control terminals of the first switching element and the second switching element; a first output terminal is connected with a second node; a second output terminal is connected with a third node; a first high-frequency cutoff element is connected with the power supply terminal and the second node; and a second high-frequency cutoff element is conne

Abstract: In a signal generating circuit, a power supply terminal is connected with first terminals of a first switching element, a second switching element, and a third switching element; second terminals of the second switching element and the third switching element are connected to each other at a first node; the first node is connected with a ground and a first input terminal; a conduction control terminal of the third switching element is connected with the power supply terminal and the first terminal of the first switching element; a second terminal of the first switching element is connected with the first node; the second input terminal is connected with conduction control terminals of the first switching element and the second switching element; a first output terminal is connected with a second node; a second output terminal is connected with a third node; a first high-frequency cutoff element is connected with the power supply terminal and the second node; and a second high-frequency cutoff element is conne

Abstract: A charging-voltage generating unit generates voltage which charges a charge storage element from one input signal. An output-voltage generating unit generates voltage referenced to a signal output reference terminal and output at a signal output terminal from another input signal. A charging-voltage output terminal and first terminals of a first switching element and the charge storage element are connected at a first point. A charging-voltage output reference terminal is connected with a second terminal of the first switching element at a second point. An output-voltage output terminal, a first terminal of a second switching element, and the signal output terminal are connected at a third point. The output-voltage output reference terminal, a signal output reference terminal, and second terminals of the second switching element and the charge storage element are connected at a fourth point. The second and third points are interconnected.