Abstract:
A screw fastening device includes a driver, a photographing portion, a transfer unit, a barycentric coordinate calculating portion, and a screw hole specifying portion. The driver fastens a screw. The photographing portion photographs a substrate. The transfer unit transfers the driver and photographing portion in front-rear and left-right directions. The screw fastening device specifies, a photographed image, screw fastening coordinates, moves the driver, using the transfer unit, to the position indicated by the screw fastening coordinates, and fastens the substrate to a frame. A mark is imparted to an inner side of a screw hole in the frame, such that the mark is distinguishable in the photographed image from the substrate and the frame. The barycentric coordinate calculating portion calculates barycentric coordinates of a position of the detected mark. The screw hole specifying portion specifies the screw fastening coordinates based on the calculated barycentric coordinates.
Abstract:
Provided is a lighting-on/off control circuit that can increase number of LEDs that can go on/off, without increasing number of control signal lines. It includes a control circuit outputting plural first and second signals, a first push-pull circuit receiving plural first signals, a second push-pull circuit receiving plural second signals, and an LED group capable of being connected in between one of outputs of first push-pull circuit and one of outputs of second one. When first signal has a first value and second signal has a second value, a first current flows from first to second push-pull circuit; when second signal has a first value and first signal has a second value, a second current flows from second to first push-pull circuit.
Abstract:
A connector includes a connector body, a first elastic member, and a second elastic member. The connector body has an insertion hole that allows a connection member to be inserted thereinto. The connection member has a plate shape or a sheet shape. Each of the first and second elastic members is a conductive member that includes a base fixed to the connector body. The first and second elastic members are elongated in a thickness direction of the connection member and butted against each other so as to partially block the insertion hole. The thickness direction intersects an insertion direction of the connection member.
Abstract:
A power supply device includes a signal generation portion, a voltage generation portion, and a correction portion. The signal generation portion generates a PWM signal. In the voltage generation portion, an output voltage value is adjusted according to the PWM signal. The correction portion finds a correction value for a duty ratio corresponding to a frequency or a period of the PWM signal, and corrects the duty ratio of the PWM signal based on the correction value.
Abstract:
A bundling band includes: a first band portion having a first band, and a first head portion connected to a first end thereof; and a second band portion having a second band, and a second head portion connected to first and second ends thereof. In the first head portion and second head portion, a first insertion hole (insertable with the second band, second head portion, and first band) and a second insertion hole (insertable with the second band) are formed, respectively. The first insertion hole is provided with a locking mechanism locking drawing-out of the inserted first band by engaging with one of engaging grooves. The second insertion hole is provided with a locking mechanism locking drawing-out of the inserted second band by engaging with one of engaging grooves.
Abstract:
A lighting control circuit (1) controls lighting and extinguishing a plurality of light-emitting elements (D11 to D19, D21 to D29, and D31 to D39). The lighting control circuit (1) has: a first scanning circuit (10) that sequentially scans the light-emitting elements by a predetermined first unit number at a time; a second scanning circuit (20) that sequentially scans the light-emitting elements being scanned by the first scanning circuit (10) by a second unit number at a time, which is lower than the first unit number; and a control circuit (30) that controls lighting and extinguishing the individual light-emitting elements being scanned by the first and second scanning circuits (10, 20).
Abstract:
A lighting control circuit (1) controls lighting and extinguishing a plurality of light-emitting elements (D11 to D19, D21 to D29, and D31 to D39). The lighting control circuit (1) has: a first scanning circuit (10) that sequentially scans the light-emitting elements by a predetermined first unit number at a time; a second scanning circuit (20) that sequentially scans the light-emitting elements being scanned by the first scanning circuit (10) by a second unit number at a time, which is lower than the first unit number; and a control circuit (30) that controls lighting and extinguishing the individual light-emitting elements being scanned by the first and second scanning circuits (10, 20).