60results about How to "Realize isolation protection" patented technology

The invention discloses an LED (light emitting diode) backlight short-circuit protection circuit, which comprises a first triode Q1, a second triode Q2 and a third triode Q3, wherein an emitting electrode of the first triode Q1 is connected to an LED load, a collector electrode of the first triode Q1 is grounded through a resistor R1 and a resistor R4 which are connected in parallel, the junction point of the resistor R1 and the resistor R4 is connected with a base electrode of the second triode Q2, and the base electrode is connected with a collector electrode of the third triode Q3 through a resistor R2; a collector electrode of the second triode Q2 is connected with a short-circuit protection end, and an emitting electrode is grounded; a base electrode of the third triode Q3 is connected with a control signal end through a resistor R3, and an emitting electrode is grounded; a constant output current is provided for the LED load by outputting high level to the control signal end, and the constant output current is not provided for the LED load by outputting low level to the control signal end; the short-circuit protection end and the control signal end are both connected onto a single-chip microcomputer; when the LED load is in short circuit, the second triode Q2 is connected, so that the short-circuit protection end outputs the low level, when the single-chip microcomputer detects that the short-circuit protection end is low-level, the low level is outputted to the control signal end, and the isolation protection can be realized.

The invention relates to a system and a method for continuous electrolysis processing of microgroove groups of a flexible metal sheet, and belongs to the technical field of electrolysis processing. The system comprises a flexible metal sheet workpiece conveying system, an electrolysis processing tool electrode system, a processing power source, an electrolyte circulating system, and an electrolysis processing machine tool. The method comprises the following steps of during processing, firstly, clamping the flexible metal sheet, enabling the flexible metal sheet to penetrate between a plurality of support rollers and an arc-shaped masking plate, and enabling the inner and outer surfaces to tightly attach with the corresponding support rollers and the arc-shaped masking plate; according to the structure and size of each microgroove group, selecting a tool electrode, and completing the clamping; flushing electrolyte, feeding each tool electrode along the radial direction of the corresponding support roller, and processing a groove structure in the surface of the flexile metal sheet; processing to the specified depth, enabling a driving wheel to continuously rotate, and driving the flexible metal sheet to slowly slide along the tangential direction of each roller, so as to complete the continuous processing of the microgroove groups of the flexible metal sheet. The system and the method have the advantages that the tool electrodes can be synchronously performed with auxiliary movement, and the updating of electrolyte and the discharging of electrolysis products are promoted.

The invention discloses an easy-to-install electric power transformer, which comprises a mounting seat, a connecting rod is fixed on the mounting seat, a fixing plate is fixed on the connecting rod, a servo motor is fixed on the fixing plate, and the servo The output shaft of the motor is fixed with a first rotating shaft, and a first gear and a first pulley are fixed on the first rotating shaft, and the first gear meshes with a second gear, and the second gear is fixed on the second rotating shaft. The second rotating shaft is fixed with a second pulley, the first pulley and the second pulley are connected with a third pulley, the third pulley is fixed on the third rotating shaft, and the third rotating shaft is fixed with a third gear , the meshing transmission of the third gear is connected with a rack, the rack is fixed on the box, and the lower end of the mounting seat is provided with a support adjustment mechanism. The installation and maintenance of the transformer are facilitated by the structure, the structure is simple, the operation is easy, and the work efficiency is improved.

The invention discloses a protective cover of an ultrasonic device. The protective cover of the ultrasonic device comprises: a stable seat; a bin body assembly, which is connected with the stable seat and is used for cleaning and placing objects; at least two sets of protection A cover assembly, the protective cover assembly is arranged outside the silo body assembly for protection and isolation during ultrasonic cleaning; at least two sets of adjustment devices are arranged outside the silo body assembly; wherein, the adjustment device includes: a transmission assembly, the transmission assembly is arranged outside the silo body assembly; the cleaning assembly, the cleaning assembly is connected with the transmission assembly, and is used for cleaning the interior of the silo body assembly, the device realizes the isolation protection during ultrasonic cleaning through the external protective cover assembly , to prevent secondary pollution, the internal transmission component cooperates with the cleaning component to automatically clean the inside of the circular silo, and collect the ultrasonic cleaning dirt, which further improves the cleaning quality.