CN2308903Y

CN2308903Y - Universal purpose test pencil

Info

Publication number: CN2308903Y
Application number: CN 97233299
Authority: CN
Inventors: 滕洪福
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-06-04
Filing date: 1997-06-04
Publication date: 1999-02-24
Anticipated expiration: 2007-06-04

Abstract

The utility model relates to an electricity testing device, particularly a universal electricity-testing pencil which is composed of a testing contact, a plastic casing and a hand-contacting electrode which is positioned at the casing. A contact electricity-testing circuit, a short-distance induction electricity-testing circuit, a far-distance induction electricity-testing circuit, a sensitivity adjusting circuit, a sounding and lighting circuit and a self-checking circuit are arranged at the utility model; thus, when the utility model is used, the utility model can contact electrical equipment to test the electricity of the electrical equipment, the utility model can test whether the circuit is switched on or not, the utility model can do the electricity test of induction for the electrical-carrying equipment at a short distance or a far distance, the utility model can adjust the sensitivity of the electricity test of induction, and the electricity test of induction can be realized with the sounding and lighting display. The utility model has the advantages of small volume, multi-function, reliable work, etc. The utility model can be used for testing various electrical equipment.

Description

Omnipotent test pencil

The utility model relates to electroscopic device, especially by test contact, plastic casing and be positioned at the omnipotent test pencil that the hand touched electrode of shell is formed.

Existing test pencil is a kind of to be to be in series by test contact, metal spring, current-limiting resistance, neon lamp and hand touched electrode, and its weak point is that the neon lamp demonstration is not obvious, and has only a kind of function of contact electrical verification; Another kind is that liquid crystal digital shows test pencil, and its weak point is all to cannot see shown numeral when light is strong or weak; In addition, also have my invention " multifunction test pencil " (patent No.: 91211565.3) and " omnipotent test pencil " (patent No.: 95233962.5), still there is the incomplete shortcoming of function in these two kinds of test pencils.

The purpose of this utility model just is to overcome the deficiencies in the prior art, and provide that a kind of volume is little, reliable operation, have the contact electrical verification, closely respond to electrical verification, distance sensing electrical verification, sensitivity is adjustable, the multifunction test pencil of check circuit on-off, sound, the dual demonstration of light.

For achieving the above object, the utility model can reach by following measure: the positive pole of diode (D1) and test contact (T) are joined, negative pole is through the base stage (b) of resistance (R1) with triode (BG1), one end of resistance (R2) joins, the emitter (e) of triode (BG1) joins with the base stage (b) of triode (BG2), the emitter (e) of the other end of resistance (R2) and triode (BG2), the stationary contact (1) of step switch (K) joins, the moving contact (2) of step switch (K) is pressed the negative pole of power supply (E), the collector (c) of triode (BG1) and the collector (c) of triode (BG2), the negative pole of light emitting diode (LED1) joins, the positive pole of the positive pole of light emitting diode (LED1) and power supply (E) joins, the negative pole of diode (D1) is through the negative pole of resistance (R3) with diode (D2), 1 pin of integrated circuit (IC1) joins, the stationary contact (3) of the positive pole of diode (D1) and step switch (K), the negative pole of diode (D3) joins, the negative pole of the positive pole of diode (D3) and diode (D4) joins, the positive pole of diode (D4) and step switch (K) stationary contact (3 '), stationary contact (4), 7 pin of integrated circuit (IC1), 4 pin of integrated circuit (IC2), the negative pole of light emitting diode (LED2) joins, 14 pin of integrated circuit (IC1) and power supply (E) positive pole join, one end of 2 pin of integrated circuit (IC1) and resistance (R4), the base stage (b) of triode (BG3) is joined, one end of the other end of resistance (R4) and potentiometer (W) joins, the positive pole of the other end of potentiometer (W) and adjustable end and power supply (E) joins, the collector (c) of triode (BG3) and the negative pole of capacitor (C1), 1 pin of integrated circuit (IC2) joins, the emitter (e) of triode (BG3), the positive pole of capacitor (C1), the positive pole of 3 pin of integrated circuit (IC2) and power supply (E) joins, 2 pin of integrated circuit (IC2) join through the resistance (R6) and the base stage (b) of triode (BG4), the emitter (e) of triode (BG4) joins with 5 pin of integrated circuit (IC2), the collector (c) of triode (BG4) and the negative pole of hummer (FM), the positive pole of capacitor (C2) joins, one end of the negative pole of capacitor (C2) and resistance (R5), the positive pole of light emitting diode (LED2) joins, the other end of resistance (R5), hummer (FM) anodal and the positive pole that is positioned at hand touched electrode (D) and power supply (E) on the plastic casing join.

The utility model is owing to be provided with the contact electrical circuit inspection, closely respond to electrical circuit inspection, long distance induction electroscopy circuit, sensitivity adjustment circuit, acoustic luminous circuit, self-checking circuit, so can contact electrical verification to electric equipment, break-make to circuit is tested,, distance sensing electrical verification near to charging equipment, and can adjust harmony, the dual demonstration of light to the sensitivity of induction electrical verification, have advantages such as volume is little, function is many, reliable operation, can be widely used in the measurement of various electric equipments.

Description of drawings:

Fig. 1 is a front view of the present utility model;

Fig. 2 is circuit theory diagrams of the present utility model.

Mark among the figure: resistance (R1), (R2), (R3), (R4), (R5), (R6), capacitor (C1), (C2), diode (D1), (D2), (D3), (D4), triode (BG1), (BG2), (BG3), (BG4), light emitting diode (LED1), (LED2), hummer (FM), integrated circuit (IC1), (IC2), step switch (K), test contact (T), hand touched electrode (N), power supply (E), potentiometer (W).

Below in conjunction with accompanying drawing embodiment of the present utility model is further described: as shown in drawings, the contact electrical circuit inspection forms by test contact (T), diode (D1), resistance (R1), (R2), triode (BG1), (BC2), step switch (K), light emitting diode (LED1), hand touched electrode (N), by the observation light emitting diode (LED1) but whether whether luminous Direct Test equipment under test charged; Closely respond to electrical circuit inspection and form, can realize closely induction electrical verification tested electric equipment by 1,2 pin of test contact (T), diode (D1), (D2), resistance (R3), step switch (K), integrated circuit (IC1); 1,2 pin of distance sensing electrical verification route test contact (T), diode (D1), (D2), (D3), (D4), resistance (R3), step switch (K), integrated circuit (IC1) are formed, and can realize the distance sensing electrical verification to tested electric equipment; Sensitivity adjustment circuit is made up of 2 pin, potentiometer (W), resistance (R4), the triode (BG3) of integrated circuit (IC1), can adjust the sensitivity of induction during electrical verification; Phonation circuit is made up of triode (BG3), (BG4), electric capacity (C1), (C2), integrated circuit (IC2), resistance (R5), (R6), hummer (FM), light emitting diode (LED2), and this circuit sends chimes of doom when activation signal.The parameter of each element of the utility model is respectively: resistance (R1), (R2), (R3), (R3), (R4), (R5), (R6) resistance is respectively 3 megaohms, 10 megaohms, 10 megaohms, 5 kilo-ohms, 2 kilo-ohms, 4.7 kilo-ohm, capacitor (C1), (C2) capacity is 1 microfarad, diode (D1), (D2), (D3), (D4) be the 2CP type, triode (BG1), (BG2), (BG4) be 9013 types, triode (BG3) is 9015 types, light emitting diode (LED1), (LED2) be φ 3mm light emitting diode, hummer (FM) is a φ 12mm hummer, integrated circuit (IC1) is common tailored version, integrated circuit (IC2) is a music integrated circuit, step switch (K) is small-sized fourth gear toggle switch, power supply (E) is a button cell, test contact (T) is the screwdriver on the test pencil, and hand touched electrode (N) is for being positioned at the contact on the plastic casing.Wherein the positive pole of diode (D1) and test contact (T) are joined, negative pole is through the base stage (b) of resistance (R1) with triode (BG1), one end of resistance (R2) joins, the emitter (e) of triode (BG1) joins with the base stage (b) of triode (BG2), the emitter (e) of the other end of resistance (R2) and triode (BG2), the stationary contact (1) of step switch (K) [this contact is that 1 gear of step switch (K) is put the contact] joins, the moving contact (2) of step switch (K) connects the negative pole of power supply (E), the collector (c) of triode (BG1) and the collector (c) of triode (BG2), the negative pole of light emitting diode (LED1) joins, the positive pole of the positive pole of light emitting diode (LED1) and power supply (E) joins, the negative pole of diode (D1) is through the negative pole of resistance (R3) with diode (D2), 1 pin of integrated circuit (IC1) joins, the stationary contact (3) of the positive pole of diode (D1) and step switch (K) [this contact is that 3 gears of step switch (K) are put the contact], the negative pole of diode (D3) joins, the negative pole of the positive pole of diode (D3) and diode (D4) joins, the positive pole of diode (D4) and step switch (K) stationary contact (3 ') [this contact is the attached contact that step switch (K) 3 gears are put], stationary contact (4) [this contact is that step switch (K) 4 gears are put the contact], 7 pin of integrated circuit (IC1), 4 pin of integrated circuit (IC2), the negative pole of light emitting diode (LED2) joins, 14 pin of integrated circuit (IC1) and power supply (E) positive pole join, one end of 2 pin of integrated circuit (IC1) and resistance (R4), the base stage (b) of triode (BG3) is joined, one end of the other end of resistance (R4) and potentiometer (W) joins, the positive pole of the other end of potentiometer (W) and adjustable end and power supply (E) joins, the collector (c) of triode (BG3) and the negative pole of capacitor (C1), 1 pin of integrated circuit (IC2) joins, the emitter (e) of triode (BG3), the positive pole of capacitor (C1), the positive pole of 3 pin of integrated circuit (IC2) and power supply (E) joins, 2 pin of integrated circuit (IC2) join through the resistance (R6) and the base stage (b) of triode (BG4), the emitter (e) of triode (BG4) joins with 5 pin of integrated circuit (IC2), the collector (c) of triode (BG4) and the negative pole of hummer (FM), the positive pole of capacitor (C2) joins, one end of the negative pole of capacitor (C2) and resistance (R5), the positive pole of light emitting diode (LED2) joins, the other end of resistance (R5), hummer (FM) anodal and the positive pole that is positioned at hand touched electrode (D) and power supply (E) on the plastic casing join.

When test pencil was in off position, 2 pin of integrated circuit (IC1) are output signal not, and triode (BG3) is in cut-off state, integrated circuit (IC2) no signal input and outputting music signal not.When need carry out self check to test pencil, with contacting hand touches the utmost point (N) on the other hand, another hand engaged test contact (T), positive electrical is flowed through 1 pin input positive signal that human body gives integrated circuit (IC1), 2 pin of integrated circuit (IC1) have promptly been exported the signal that has amplified, make triode (BG3) become state of saturation, make its outputting music signal and trigger music integrated circuit (IC2) by cut-off state.Just can carry out other test after having only proof test pencil itself working properly.

When needs contact electrical verification to tested electric equipment, step switch (K) is allocated to 1 gear to be put, at this moment, the stationary contact (1) of step switch (K) and moving contact (2) are connected, the tentacle touched electrode that catches (N), with test contact (T) contact measured body, if measured body is charged, electric current can pass through test contact (T), diode (D1), through resistance (R1), (R2) make triode (BG1) after the dividing potential drop, (BG2) saturation conduction, thereby make anodal hand touched electrode (N) and human body and the earth formation loop on power supply (E) positive pole of light emitting diode (LED1), make light emitting diode (LED1) luminous.

When to remote electric equipment (as hi-line) when responding to electrical verification, then at first step switch (K) being allocated to 4 gears puts, the stationary contact (3 ') of step switch this moment (K), (4) and moving contact (2) connect, connected power supply (E), hand touched electrode (N) on the stylus shell catches, with test contact (T) near measured body, when when the measured body distance is suitable, if measured body is charged, the electric field of measured body will be sensed on the test contact (T), and by diode (D1), resistance (R3) is added on 1 pin of integrated circuit (IC1), carrying out signal amplifies, signal after the amplification provides input signal for triode (BG3) by the 2 pin output of integrated circuit (IC1), adjust the duty that potentiometer (W) can change triode (BG3), promptly carry out the input signal sensitivity adjustment, collector (c) output signal by triode (BG3), trigger music integrated circuit (IC2), ticking of integrated circuit (IC2) output, the acoustical signal that ticks promotes hummer (FM) after triode (BG4) amplifies, light emitting diode (LED2) sounding, luminous.

When closely responding to electrical verification (as surveying the lighting loop live wire, zero line) time, at first step switch (K) is allocated to 3 grades, the stationary contact (3) of step switch this moment (K), (3 '), (4) and moving contact (2) connect, connected power supply (E), hand touched electrode (N) on the stylus shell catches, with test contact (T) near measured body, when when the measured body distance is suitable, when if measured body is power firestreak, hummer (FM), light emitting diode (LED2) sounding, luminous, its principle of work is the part electric field signal that is received by test contact (T), through diode (D2), step switch (K) is to power supply (E) negative pole branch most of electric field signal that pours off, on 1 pin of remaining fraction signal ability input ic (IC1), other principle is identical with distance sensing electrical verification principle, the signal remaining owing to shunted most of electric field signal is very weak, so the electrical verification distance nearby, thereby can distinguish AC power zero, live wire.

In the time will carrying out on off test to circuit, with contacting test line one end on the other hand, test the other end of test line with test contact (T) with hand touched electrode (N) back of another hand contact, when being path as test line, test pencil sounding, luminous, when opening circuit, test pencil is noiseless, light shows that its principle of work is identical with the self check test principle as test line.

Claims

1, a kind of omnipotent test pencil, by test contact, plastic casing and the hand touched electrode that is positioned at shell are formed, it is characterized in that: the positive pole of diode (D1) and test contact (T) are joined, negative pole is through the base stage (b) of resistance (R1) with triode (BG1), one end of resistance (R2) joins, the emitter (e) of triode (BG1) joins with the base stage (b) of triode (BG2), the emitter (e) of the other end of resistance (R2) and triode (BG2), the stationary contact (1) of step switch (K) joins, the moving contact (2) of step switch (K) connects the negative pole of power supply (E), the collector (c) of triode (BG1) and the collector (c) of triode (BG2), the negative pole of light emitting diode (LED1) joins, the positive pole of the positive pole of light emitting diode (LED1) and power supply (E) joins, the negative pole of diode (D1) is through the negative pole of resistance (R3) with diode (D2), 1 pin of integrated circuit (IC1) joins, the stationary contact (3) of the positive pole of diode (D1) and step switch (K), the negative pole of diode (D3) joins, the negative pole of the positive pole of diode (D3) and diode (D4) joins, the positive pole of diode (D4) and step switch (K) stationary contact (3 '), stationary contact (4), 7 pin of integrated circuit (IC1), 4 pin of integrated circuit (IC2), the negative pole of light emitting diode (LED2) joins, 14 pin of integrated circuit (IC1) and power supply (E) positive pole join, one end of 2 pin of integrated circuit (IC1) and resistance (R4), the base stage (b) of triode (BG3) is joined, one end of the other end of resistance (R4) and potentiometer (W) joins, the positive pole of the other end of potentiometer (W) and adjustable end and power supply (E) joins, the collector (c) of triode (BG3) and the negative pole of capacitor (C1), 1 pin of integrated circuit (IC2) joins, the emitter (e) of triode (BG3), the positive pole of capacitor (C1), the positive pole of 3 pin of integrated circuit (IC2) and power supply (E) joins, 2 pin of integrated circuit (IC2) join through the resistance (R6) and the base stage (b) of triode (BG4), the emitter (e) of triode (BG4) joins with 5 pin of integrated circuit (IC2), the collector (c) of triode (BG4) and the negative pole of hummer (FM), the positive pole of capacitor (C2) joins, one end of the negative pole of capacitor (C2) and resistance (R5), the positive pole of light emitting diode (LED2) joins, the other end of resistance (R5), hummer (FM) anodal and the positive pole that is positioned at hand touched electrode (D) and power supply (E) on the plastic casing join.