4results about How to "Simple application circuit" patented technology

This utility model discloses a high-precision digital sensor keypad switch keyboard, characterized by: including a PCB board, on which at least one digital magnetic sensor keypad switch is disposed; and on which a digital magnetic sensor is disposed, capable of linearly and accurately detecting the change in magnetic flux in the Z-axis direction caused by the height difference of the permanent magnet within the keypad switch, and quantifying it into a digital sample value to generate a high or low level digital signal output. The digital magnetic sensor and the keypad switch are configured in a one-to-one correspondence. The purpose of this utility model is to overcome the shortcomings of the prior art and provide a digital magnetic sensor keypad switch keyboard with a simple structure, low cost, effectively reducing the wobbling amplitude during the keypad's movement stroke, high triggering accuracy and reliability, relatively low frictional resistance, good tactile feel, and ultra-low latency.

The invention discloses a modular servo system and module library, and belongs to the technical field of servo control, and the modular servo system comprises a driving module, a control module, a communication module and a power supply module which are detachably connected. Each functional circuit of the servo system is designed based on a modular concept and can be directly called by designers, and required driver hardware is combined in a building block building mode. The modular support is used for carrying out customized design on a single module or multiple modules, so that the compatibility is good, the workload and the cost of customized development of the whole system are reduced on the premise of meeting specific environment or function requirements, the development efficiency is high, and relatively excellent performance can be provided in a specific scene; and meanwhile, modularization is relatively independent in physical space, so that the problem is conveniently and quickly positioned, and the maintenance difficulty is reduced.

The utility model relates to a kind of multifunctional electromagnetic buzzer drive integrated circuit, including EN enable control circuit, DIN external signal control circuit, RC oscillation circuit, counting frequency division circuit, OUT output drive circuit, anti-peak absorption circuit.It can control high-precision RC oscillation circuit work by EN enable control circuit, after counting frequency division, drive circuit OUT exports fixed square wave signal, DIN can additional input signal, make output signal follow input signal;The anti-peak absorption circuit is connected with output drive circuit OUT.The utility model multifunctional electromagnetic buzzer drive integrated circuit is simple, in addition to itself can generate fixed drive signal, also can be controlled by single-chip microcontroller to enable EN enable port and DIN external signal input port, through software algorithm, can make buzzer produce continuous sound, various drop drop sound and various sound effect prompt sound, use more widely and intelligent.

According to the self-protection electrically-controlled thyristor capable of accurately controlling the breakover voltage, a sinking distortion junction with a proper depth is manufactured at a forward blocking junction below an effective cathode region of an amplification gate electrode front auxiliary thyristor, so that the thickness of a long base region of the front thyristor is reduced, and a fixed region for forward voltage breakover starting is formed. The turning current in the area is equal to the gate pole strong trigger current entering the amplification gate pole area, and is sufficient to implement strong trigger on the main thyristor, so that the main thyristor enters a safety mode of opening the amplification gate pole-cathode perimeter, the thyristor has a self-trigger protection function on forward voltage turning, the size and the shape of a sinking distortion junction are accurately designed, and the reliability of the device is improved. And the breakover voltage of the device can be accurately controlled. The overvoltage self-protection device has the advantages that an overvoltage self-protection function is integrated in the device, tedious external circuit triggering protection is not needed, a thyristor application circuit is greatly simplified, and the reliability of a power electronic device is improved.