CN2149660Y

CN2149660Y - Money Testing pen

Info

Publication number: CN2149660Y
Application number: CN93210133U
Authority: CN
Inventors: 田勇; 胡凯华
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-04-21
Filing date: 1993-04-21
Publication date: 1993-12-15
Anticipated expiration: 2003-04-21

Abstract

The utility model discloses a money Testing pen, and the pen body is divided into a front part, a middle part and a back part. The front part is provided with an ultraviolet lamp and a pen cavity, the middle part is provided with a machine core, and the back end is a cell cavity. A capacitive oscillating circuit which is composed of a transistor and a magnetic core is used as a machine core circuit. The utility model has the advantages of dual-purpose in one pen and portability.

Description

Money Testing pen

Utility model relates to a kind of banknote tester, especially a kind of currency examine pen that utilizes ultraviolet ray to check currency or ticket, certificate conveniently, reliably.

Technology such as the false proof main employing dedicated paper printing of currency, watermark, gravure in the past, like this under the natural light condition, touch, can judge roughly soon the true and false of currency by hand, but these false proof means are along with the passing of the universal and time of science and technology, seemed perfect inadequately, technology aging, the anti-counterfeiting performance effect is low day by day, is easy to be forged.In order to change this situation, the bank note of present nearly all country has all adopted the anti-fake mark of ultraviolet light induced color shifting ink printing currency.In about 50 yuan of the new edition Renminbi that is being issued throughout the country from August 20th, 1992 as People's Bank of China, 100 yuan note fronts, just be printed with the Chinese phonetic alphabet and the arabic numeral printed words that show denomination respectively, under ultra violet lamp, can be revealed, thereby reach false proof purpose.

Like this, ultraviolet light induced color varying counterfeit-proof ink just needs a ultraviolet source to differentiate, now as bank, the special-purpose ultraviolet light source that uses in the security affairs exchange, volume is big, need AC power and be the style of fixing, can not carry, use inconvenience and uneconomical for general shop, individual.

The purpose of this utility model is to carry from a kind of currency examine pen, and it can not only distinguish the currency that adopts ultraviolet light induced color varying counterfeit-proof ink to print, the true and false of ticket fast, expediently, also can use as common lettering pen, and volume is little, and is easy to carry.

The purpose of this utility model is achieved in that the currency examine pen comprises front end, middle part and the rear end of handwriting.Front end in handwriting is equipped with ultraviolet lamp tube, and is provided with the chamber that can load and unload pen core easily, and the sidepiece of nib has window, and printed circuit board (PCB) is equipped with at the middle part, and lateral wall is provided with switch, and the rear end is a battery cavities; The circuit of above-mentioned currency examine pen is such, two resistance that connect series connection between the positive and negative electrode of power supply, company's point of resistance connects an end of two windings of magnetic core transducer respectively, the other end of above-mentioned winding connects the base stage of two triodes respectively, their emitter links to each other with power cathode, collector connects an end of the input winding of magnetic core transducer, another termination positive source of above-mentioned input winding, and the output winding connects the ultraviolet lamp electrode.

The utlity model has unique design, easy to use, can carry, not only can currency examine but also can write, can be widely used in all kinds of place, unit or the departments that need currency examine.

Description of drawings is as follows:

Fig. 1 is the structural representation of currency examine pen of the present utility model;

Fig. 2 is the circuit theory diagrams of currency examine pen of the present utility model;

Existing accompanying drawings most preferred embodiment of the present utility model.

The handwriting of currency examine pen is divided into three parts, adopt compact design at front end, ultraviolet lamp tube 1 is arranged in front end dexterously with pen core, on the sidewall of nib, have window 2 and can launch ultraviolet light, can stick reflectorized material on the madial wall of window 2 and strengthen the reflection of light, chamber 3 is hollow cones, there is spiral small cap the upper end, can load and unload pen core easily, the middle part is the movement chamber, utilizes insertion slot type structure mounting circuit boards 4 easily, should divide bilateral to install in transducer on the circuit board 4 and components and parts in order to maximally utilise the space, be provided with switch 5 on its lateral wall, the rear end is a battery cavities, No. 7 batteries 6 of two joints of can packing into.

Now contrast accompanying drawing 2 explanation circuit working principles, this circuit adopts the transistor self excited inverter principle, direct current is become alternating current supply with uviol lamp, utilizes transistor AND gate magnetic core transducer to form resistance capacitance formula oscillatory circuit.Constantly obtain energy, export the alternating voltage of rectangular ripple from direct supply.

Resistance R ₁And R ₂Be serially connected on the both positive and negative polarity of power supply, wherein resistance R ₁And R ₂Company's point be connected to winding N ₃And N ₄An end, winding is from N ₃And N ₄The other end be connected to triode BG ₁And BG ₂Base stage, its emitter is connected to the negative pole of power supply jointly, three utmost point BG ₁And BG ₂Collector be connected to input winding N ₁And N ₂An end, winding N ₁And N ₂The other end link the positive pole of power supply jointly, the two ends of output winding N5 are output, are connected to the electrode of ultraviolet lamp.

After the energized, BG ₁And BG ₂Conducting simultaneously under the external dc power supply effect, electric current I ₁And I ₂In magnetic core, produce magnetic field H upwards respectively ₁With downward magnetic field H ₂, since the resistance of winding and the effect of two characteristics of transistor parameters, I ₁And I ₂After cancelling each other in magnetic core in the magnetic field that produces, remaining magnetic flux increases the magnetic flux in the magnetic core gradually, thereby produce equidirectional induction electromotive force, this induction electromotive force is implemented positive feedback effect to circuit, cause the flux change in the magnetic core faster, so the transistor inverter starting oscillation, according to nonlinear characteristic and two alternately conductings of transistor of magnetic core, output voltage is high time variant voltage.

Ultraviolet lamp of the present utility model is the cold cathode ultraviolet lamp, life-span 〉=1000 hour.Detect illuminance at the 3cm place with 53 type illuminometers and can reach 200Lx.

Claims

1, a kind of currency examine pen, comprise handwriting and movement two parts, it is characterized in that handwriting is divided into front end, middle part and rear end, the front end of handwriting is equipped with ultraviolet lamp (1) and a chamber (3), sidepiece in nib has window (2), printed circuit board (PCB) (4) is equipped with at the middle part of handwriting, and switch (5) is housed on the lateral wall, and the rear end is a battery cavities; Circuit on the printed circuit board (PCB) (4) is: two resistance (R that connect series connection between the positive and negative electrode of power supply ₁, R ₂), resistance (R ₁, R ₂) company's point connect two winding (N of magnetic core transducer respectively ₃, N ₄) an end, above-mentioned winding (N ₃, N ₄) the other end connect two triode (BG respectively ₁, BG ₂) base stage, its emitter links to each other with power cathode, its collector connects the input winding (N of magnetic core transducer ₁, N ₂) an end, input winding (N ₁, N ₂) the other end connect positive source, output winding (N ₅) connect the electrode of ultraviolet lamp.

2,, it is characterized in that ultraviolet lamp (1) is the cold cathode ultraviolet lamp according to the currency examine pen of claim 1.