CN2055940U

CN2055940U - Colour changing logic pen

Info

Publication number: CN2055940U
Application number: CN 89214668
Authority: CN
Inventors: 范立刚; 蒋金锁
Original assignee: Individual
Current assignee: Individual
Priority date: 1989-07-28
Filing date: 1989-07-28
Publication date: 1990-04-11

Abstract

The utility model discloses a color changing logic pen which adopts a double color luminous tube. Three digital logic states of a high level, a low level, and a float in sky can be displayed by red, green, and yellow. The color changing logic pen comprises a pen casing, a luminous circuit, and a logic circuit.

Description

Colour changing logic pen

The utility model relates to a kind of device that is used for the existence of instructed voltage.

Logic pen is the common tool of a kind of debugging and maintenance digitizing electrical equipment, instrument and meter and computer hardware, is widely used in electron trade.Logic pen profile commonly used is box-like, and size is about 80 * 30 * 20mm, pops one's head in to oblique, and circuit board is housed in the box, and 2 or 3 luminotrons are arranged in the middle part of lid, show high and low level respectively.There is following defective in this logic of class pen:

1, must adopt 2 or 3 luminotrons just can demonstrate the high and low of logic level and floating empty three kinds of states.

2, luminotron is arranged in the middle part away from probe, and the user will observe probe simultaneously and feel inconvenience very much with the contact condition and the luminotron display result of measuring point, and easily causes visual fatigue.

3, complex structure, volume is bigger, and price is higher.

The purpose of this utility model is to design a kind of simple in structure, easy to use, cheap variable color logic pen.

The drawing explanation:

Fig. 1 is the design's a variable color logic pen structural representation, 1-probe among the figure, and the 2-penholder, the 3-stage clip, the 4-crown top of burner, 5(LD)-and luminotron, 6-logical circuit, the 7-pen cap, 8-power lead, 9-trim ring, 10-darkening ring.

Fig. 2 is the circuit diagram of logical circuit 6, R1, R2-resistance among the figure, and G1, G2, G3-not gate, the T-triode, the LD-luminotron ,+SV-connects dc power anode, and S-is switched to probe 1.

Fig. 3 is a luminotron external connection arrangenent diagram, 5(LD among the figure)-luminotron, 51-pin, 52-bare copper wire coil, 53-bare copper wire lead-out wires of coil, 54-nesa coating.

Be described in detail the design's content below in conjunction with description of drawings.

Shown in Fig. 1～3, the design's variable color logic pen comprises probe, penholder, and the pen cap, stage clip, the crown top of burner, luminotron, logical circuit, power lead and trim ring is characterized in that logical circuit 6 is made up of resistance R 1～R2, triode T, not gate G1～G3, luminotron LD.Wherein luminotron LD is the twin-core dichromatic LED, is coated with nesa coating 54 on its shell, and its edge is provided with bare copper wire coil 52 and extension line 53 thereof; Logical circuit 6+SV end is connected with dc power anode, and S holds and is connected in series with extension line 53, nesa coating 54, the crown top of burner 4, stage clip 3 and probe 1; Penholder 2 in a tubular form, adopt transparent rigid plastic to make, probe 1 is fixed on the bottom of penholder 2, the pen cap 7 in a tubular form, adopt dark plastics to make, adopt between penholder 2 and the pen cap 7 to be threaded stage clip 3, the crown top of burner 4, luminotron 5(LD), logical circuit 6 is arranged in the penholder 2 successively, power lead 8 is arranged in the top of the pen cap 7, its anodal and logical circuit 6+SV holds and is connected.Energized, probe 1 contacts with the measured point, and luminotron LD demonstrates the level state of measured point.When the measured point level was higher than 2.8V, luminotron LD azarin light was when the measured point level is lower than 0.8V, the bright green glow of luminotron LD, when the measured point level when between the two above-mentioned or measured point " floating empty ", luminotron LD is azarin light and green glow simultaneously, the compound gold-tinted that presents.

Adopt the not luminotron LD of plating conducting film, then the S of logical circuit 6 end directly is connected in series with stage clip 2, probe 1 with thin wire, and can save bare copper wire coil 52 and extension line 53 this moment.

Adopt conductive rubber replacement stage clip 2 its effects identical.The outer rim of luminotron LD arranges that a papery helps luminotron LD location and gold-tinted to observe all over aperture 10.

With prior art relatively, the design has following advantage:

1, luminotron LD and probe 1 close proximity help improving operator's work efficiency, and both distances of existing logic pen are bigger, and the operator easily produces visual fatigue.

2, only with a luminotron, all level logic states are all decided with the glow color difference of this luminotron, not only save element but also be convenient to observe.And existing logic pen adopts 2～3 luminotrons, will determine a kind of level logic state so that two luminotrons are simultaneously bright sometimes, makes troubles to the operator.

3, logical circuit 6 circuits are simple, and the element consumption is few.

4, structure is light and handy, and production cost only is about 50% of existing logic pen.

Embodiment:

Make the variable color logic pen of a kind of structure shown in Fig. 1～3, triode T is 9013, not gate G1～G3 is 74LS04, luminotron LD is common twin-core dichromatic LED, select suitable resistance R 1 for use, R2, the nesa coating 54 that approaches with magnetron sputtering method plating one deck on the shell of luminotron LD, the shell outer rim around diameter phi 0.1mm bare copper wire coil 52 a few, extract extension line 53 out, papery darkening ring 10 covers luminotron LD tube core, logical circuit 6+SV termination direct supply+5V, make logic pen length 120mm, external diameter φ 12mm, luminotron LD is from probe 1 terminal 45mm.

Claims

1, a kind of variable color logic pen comprises probe, penholder, and the pen cap, stage clip, the crown top of burner, luminotron, logical circuit, power lead and trim ring is characterized in that: logical circuit 6 is made up of resistance R 1～R2, triode T, not gate G1～G3, twin-core double color luminotron LD; Plating layer of transparent conducting film 54 on the luminotron LD shell wherein, the edge is provided with bare copper wire coil 52 and extension line 53 thereof; Logical circuit 6+SV end is connected with dc power anode, and S holds and is connected in series with extension line 53, nesa coating 54, the crown top of burner 4, stage clip 3 and probe 1; Penholder 2 adopts transparent rigid plastic to make in a tubular form, and probe 1 is fixed on the bottom of penholder 2, and the pen cap 7 adopts dark plastics to make, and in a tubular form, adopts between penholder 2 and the pen cap 7 to be threaded; When the measured point level is higher than 2.8V, luminotron LD azarin light, when the measured point level is lower than 0.8V, the bright green glow of luminotron LD, when probe 1 or measured point " floating empty "/when the measured point level is between 0.8～2.8V, the red tube core of luminotron LD and green tube core are shinny simultaneously and be combined into gold-tinted.

2, according to the variable color logic pen of claim 1, it is characterized in that: luminotron LD is arranged in the bottom of penholder 2.

3, according to the variable color logic pen of claim 1 and 2, it is characterized in that: used luminotron LD has only one.

4, according to the variable color logic pen of claim 1, it is characterized in that: when used luminotron LD did not add nesa coating, bare copper wire coil and extension line thereof, the S of logical circuit 6 end adopted thin wire directly to be connected in series with stage clip 2, probe 1.

5, according to the variable color logic pen of claim 1, it is characterized in that: the outer rim of luminotron LD is arranged a papery darkening ring 10.