32results about How to "Will not cause burnout" patented technology

A multi-phase switched capacitor power converter and a control method thereof are disclosed. The multi-phase switched capacitor power converter includes a first phase converting circuit and a second phase converting circuit. The first phase converting circuit and the second phase converting circuit include switches and a flying capacitor respectively. The switches are coupled in series and there are a first node and a second node between the switches. The flying capacitor is coupled to the first node and the second node. When the first phase converting circuit is in an operating mode and the second phase converting circuit is in a standby mode, the control method controls a part of the switches in the second phase converting circuit continuously conducted to charge the flying capacitor. The multi-phase switched capacitor power converter can prevent surge current in the phase change moment and sustains a stable output voltage, thereby improving working performance of the multi-phase switched capacitor power converter.

The invention relates to a new type of battery module, which includes a cell module, an insulating plate, a fixed steel frame, an aluminum sheet, a fixing bolt and a nut, and the cells in the cell module are alternately arranged with positive and negative poles, and any two adjacent The polarity setting between the cells is reversed, the number of cell modules is more than 3, aluminum sheets are arranged between adjacent cell modules, the number of aluminum sheets is one group less than the number of cell modules, and the copper There are two sets of copper sheets, insulating plates and fixed steel frames. The two sets of copper sheets, insulating plates and fixed steel frames are respectively arranged at both ends of the two outermost cell modules from the inside to the outside, and are connected by bolts and nuts. The cooperation between them is fixed, which improves the assembly efficiency and improves the safety performance at the same time.

The invention provides a process check meter, which comprises a shell, a light guide post and a main board, wherein the shell comprises an upper shell and a lower shell, and the main board is fixed between the upper and lower shells; the main board is provided with a plurality of input and output jacks, and an indicating lamp corresponding to each input and output jack is arranged in each input and output jack; a plurality of lampshades for covering the indicating lamps are arranged on the light guide post, and the lampshades correspond to the indicating lamps one by one; and the main board is provided with a control circuit and an input keyboard connected with the control circuit, and the control circuit is also connected with the indicating lamps and used for controlling the indicating lamps to flicker according to the input information of the keyboard. By adopting the mode, the process check meter can prompt the input and output jacks required to be plugged in advance, so that jack confusion produced during manual operation is avoided.

The invention discloses a timing protection circuit for controlling depletion-type power devices, comprising: DAC, a first inverse proportional operation circuit, a second inverse proportional operation circuit, a voltage comparator, an enable signal output module and a PMOS tube control circuit; the DAC includes a first voltage output terminal and a second voltage output terminal; the first terminal of the first inverse proportional operation circuit is connected to the first voltage output terminal, and the second terminal of the first inverse proportional operation circuit is used as the gate voltage output terminal; the second terminal of the first inverse proportional operation circuit is connected to the negative input voltage terminal of the voltage comparator with a second inverse proportional operation circuit; the positive input voltage terminal of the voltage comparator is connected to the second voltage output terminal; The enable signal output module is used to output the enable signal to the PMOS transistor control circuit when the voltage comparator outputs a low level. It solves the technical problem in the prior art that the damage of the inverse proportional operation circuit or the improper gate voltage will cause the burnout of the depletion power device.

A method for improving the test safety of a high-power semiconductor amplifier, comprising the following steps when performing a noise power density test: Step 1: Input a safe input power P at the input port of the high-power semiconductor amplifier IN‑safe ; Step 2: Detect the output power value P of the high-power semiconductor amplifier OUT , if it is greater than the upper limit, the output port of the high-power semiconductor amplifier is not connected with a suitable band-stop filter or is not connected with a band-stop filter. In the process of testing high-power semiconductor amplifiers, it not only realizes the testing of performance indicators, but also avoids burning out expensive testing instruments such as vector network analyzers and spectrum analyzers.

Te invention relates to a novel battery cell module which comprises a module shell. Battery cells are arranged in the module shell, the interior of the module shell is evenly divided into two battery cell installing cavities, the anodes of all the battery cells in one battery cell installing cavity are arranged upwards, and the cathodes of all the battery cells in the other battery cell installing cavity are arranged upwards; one side of the upper surface of the module shell is provided with a plurality of clamping plate fixing grooves, the other side of the upper surface of the module shell is provided with clamping plates, each clamping plate fixing groove is provided with two clamping plate fixing holes, and the clamping plates are fixed in clamping cavities of the battery cell module through clamping mechanism. According to the novel battery cell module, anode and cathode judgment is not needed during assembling, time and labor are saved, the assembling efficiency and quality are improved, and the safety is improved.

The invention discloses an SD card protection system, terminal equipment, an SD card protection method, a protection circuit for a connector with multiple card slots in one, and a connector with multiple card slots in one. The SD card protection system includes a multi-slot connector, a switch unit, a charge discharge unit, a detection unit, and a controller; the switch unit is connected in series to the power supply line of the SD card power pin of the connector; the charge discharge unit It is connected with the SD card power supply pin of the connector; the detection unit is used to detect the insertion and removal status of the card tray. The controller receives and obtains the insertion and removal status of the card tray according to the output information of the detection unit. When the card tray is inserted, the charge discharge unit is turned off, and the switch unit is turned on. When the card tray is pulled out, the control switch unit is turned off and turned on. The charge discharge unit discharges the charge on the SD card power pin of the connector, and through the scheduling of the controller, it is guaranteed from the system level that no matter whether the card tray is plugged or unplugged, the motherboard and the card will not be burned.

The invention discloses a display panel and a signal transmission method thereof. The display panel provided by the invention comprises a substrate and at least a first driving chip and a second driving chip. The first and second driving chips are directly arranged on one side of the substrate; the first driving chip is at least provided with a first power supply receiving solder pad, first and second auxiliary solder pads and a first auxiliary wire; and the second driving chip is at least provided with a second power supply receiving solder pad. The first power supply receiving solder pad and the first auxiliary solder pad are used for receiving system voltages respectively and the first auxiliary solder pad is also connected with the second auxiliary solder pad through the first auxiliary wire to transmit the system voltage to the second power supply receiving solder pad from the second auxiliary solder pad.

The invention relates to a volatile matter channel for a pot type calcining furnace. The volatile matter channel for the pot type calcining furnace comprises a material pot, a material pot upper portion volatile matter concentrated channel, a front wall and a rear wall; a front wall volatile matter vertical channel is formed inside the front wall; a fire channel smoke concentrated channel is arranged on the lower portion of the front wall; the front wall volatile matter vertical channel is directly communicated with the fire channel smoke concentrated channel from the material pot upper portion volatile matter concentrated channel; a first layer fire channel volatile matter concentrated channel, a third layer fire channel volatile matter concentrated channel and a fifth layer fire channel volatile matter concentrated channel are communicated with the front wall volatile matter vertical channel; a rear wall volatile matter vertical channel is formed inside the rear wall; a second layer fire channel volatile matter concentrated channel, a fourth layer fire channel volatile matter concentrated channel and a sixth layer fire channel volatile matter concentrated channel are communicated with the rear wall volatile matter vertical channel. The volatile matter channel for the pot type calcining furnace has the advantages of enabling redundant volatile matters in high volatile matter raw materials to be directly discharged to the fire channel smoke concentrated channel through the front wall volatile matter vertical channel, enabling energy of the redundant volatile matters after burning to be utilized by following devices and not needing return matching technology.

The invention discloses a printer fault control system, which comprises an alarm module, a processor module, a current acquisition module, a voltage reading module and a voltage acquisition module. The printer fault control system avoids fast rising in voltage of a main line of a printer main control circuit, stops and alarms in time and does not result in the burning of a motor control single-chip microcomputer.