Transient high-voltage protection circuit for fixed fax machines
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A facsimile machine and resistance technology, applied in emergency protection circuit devices, emergency protection circuit devices, and circuit devices used to limit overcurrent/overvoltage, can solve problems such as human injury, inconvenient work, and facsimile machine damage, and achieve The effect of preventing lightning strikes
Inactive Publication Date: 2015-05-06
CHENGDU KEHONG ELECTRONICS
View PDF0 Cites 0 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
[0002] Today, with the rapid development of information, the fax machine is an important tool for document exchange between enterprises, but the external line may have a momentary high voltage due to voltage instability, or the fax machine may be damaged by accidental lightning strikes during a thunderstorm, causing inconvenience in work, and May cause injury to people due to high voltage
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0009] The present invention will be further described below in conjunction with accompanying drawing:
[0010] Such as figure 1 As shown, the present invention is used for the instantaneous high voltage protection circuit of a fixed facsimile machine, including a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, first diode D1, second diode D2, third diode D3, fourth diode D4, fifth diode D5, sixth diode D6, seventh diode D7 , eighth diode D8, ninth diode D9, tenth diode D10, first capacitor C1, second capacitor C2, third capacitor C3, first variable resistor RL1, second variable resistor RL2 , triode VT, inductance L and bidirectional thyristor SCR, the anode of the first diode D1 is respectively connected with the first end of the first resistor R1 and the first input end of the facsimile machine, and the cathode of the first diode D1 is respectively connected with the first ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
PUM
Login to view more
Abstract
The invention discloses a transient high-voltage protection circuit for fixed fax machines, comprising a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, a first diode, a second diode, a third diode, a fourth diode, a fifth diode, a sixth diode, a seventh diode, an eighth diode, a ninth diode, a tenth diode, a first capacitor, a second capacitor, a third capacitor, a first variable resistor, a second variable resistor, a triode, an inductor, and a bidirectional thyristor. The transient high-voltage protection circuit for fixed fax machines of the invention can effectively prevent damage of lightning and accident line overvoltage to fax machine equipment, and has no impact on the operation of fax machines.
Description
technical field [0001] The invention relates to a protection circuit, in particular to an instantaneous high voltage protection circuit for a fixed facsimile machine. Background technique [0002] Today, with the rapid development of information, the fax machine is an important tool for document exchange between enterprises, but the external line may have a momentary high voltage due to unstable voltage, or the fax machine may be damaged by accidental lightning strikes in thunderstorms, causing inconvenience in work. Human injury may be caused by high voltage. Contents of the invention [0003] The object of the present invention is to provide a transient high voltage protection circuit for a fixed facsimile machine in order to solve the above problems. [0004] The present invention achieves the above object through the following technical solutions: [0005] An instantaneous high voltage protection circuit for a fixed fax machine, comprising a first resistor, a second ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to view more 
Login to view more