CN2079299U - Multi-function micro electric field detector - Google Patents
Multi-function micro electric field detector Download PDFInfo
- Publication number
- CN2079299U CN2079299U CN 90224232 CN90224232U CN2079299U CN 2079299 U CN2079299 U CN 2079299U CN 90224232 CN90224232 CN 90224232 CN 90224232 U CN90224232 U CN 90224232U CN 2079299 U CN2079299 U CN 2079299U
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- Prior art keywords
- line
- electric field
- circuit
- field detector
- utility
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- Measurement Of Current Or Voltage (AREA)
Abstract
The utility model discloses a multi-function micro electric field detector which is composed of a box body, a box cover, a baffle, a detecting head, a coupled apparatus, a triple-tube Darlington amplifying circuit, a tunable displaying switch circuit, a lighting circuit and a direct-current power supply. The detecting head comprises an induction detecting piece being used for non-contacting a directing line being measured and a contact detecting rod being used for contacting the directing line being measured. The utility model has the advantages of the adoption of few components, handy box body, compact structure and low cost. The multi-function micro electric field detector can detect out the on-line electricity in the insulating layer of the directing line, distinguish the phase wire or the zero line and ensure the electrical leakage of the zero line to the ground, the head breaking position of the directing line and the distribution of the dark line in buildings. The utility model can also detect the metal surfaces of the daily electrical appliances with electricity through contacting the detecting rod.
Description
The utility model belongs to the measurement electric variable device of indicator current or voltage existence, especially belongs to a kind of multifunction micro electric field detector.
Existing electric field detector, contactless electricity measurer or electroscope, various informative, function differs, and differs from one another.
The utility model aims to provide the more compact and lower-cost multifunction micro electric field detector of a kind of structure, for market increases new practical product.
The utility model is made up of box body, lid, dividing plate, detecting head, coupled apparatus, three pipe darlington amplifying circuits, adjustable display switch circuit, lighting circuit and direct supply.Wherein detecting head comprises induction the spy sheet and the contact feeler lever that is used to contact tested lead that is used for the tested lead of noncontact, the input end that collector is connected with the transistor display switch circuit of light emitting diode is provided with potentiometer with switch and forms adjustable display switch circuit, direct supply is connected to each collector loop of adjustable display switch circuit and three pipe darlington amplifying circuits by this switch, and the movable end of potentiometer with switch is connected to three pipe darlington amplifying circuit output terminals, and three pipe darlington amplifying circuit input ends are connected to induction respectively by coupled apparatus and visit sheet and contact feeler lever.The lighting circuit of being made up of light switch and miniature spotlight bead is connected across the two ends of direct supply.
The utility model adopts components and parts few, and box body is small and exquisite, compact conformation, and cost is lower.Can be in the existence of wire insulation probing surface electric field, to determine onlinely to have, distinguish phase line or zero line, determine that concealed wire distributes in zero line Leaked Current of Line to Ground, disconnection fault position and the buildings, it is charged to survey the daily-use electrical appliance metal surface by the contact feeler lever.Owing to be provided with three pipe darlington amplifying circuits of high-amplification-factor, can be with 380 volts of voltage conductive line surfaces 2-3 centimeters or distance to be with 1-1.5 rice, 10 kilovolts of high-voltage conducting wires surfaces to carry out electric field detecting accurately in distance.At the low light level or do not have in the luminous environment, can also be used as ligthing paraphernalia.
Fig. 1 is the utility model box body structure synoptic diagram;
Fig. 2 is the utility model circuit theory diagrams.
Contrasting accompanying drawing below in conjunction with embodiment is described further.
Rectangle box body 1 is formed shell of the present utility model with lid, and physical dimension is 800 * 400 * 15 millimeters.By dividing plate 2 box body 1 is separated into two parts that does not wait in the space.Little space segment is to survey with light to show cavity 3.Be provided with detecting head at box body 1 long side plate top ends extexine, it comprises that an induction made from 20 * 10 * 0.5 millimeter copper sheet visits sheet TP, contacts feeler lever TG with one with what 1.5 * 30 millimeters copper bars of Φ were made.Box body 1 another long side plate is provided with light emitting diode eyelet 4, and is provided with miniature spotlight bead fenestra 5 at short side plate, and miniature spotlight bead XD is fixed in the cavity 3 by lamp socket.In cavity 3, also be provided with and sheet TP and three is visited in induction manage the coupling capacitance Co that the darlington amplifying circuits first transistor BG1 base stage is connected and will contact series coupled branch road that feeler lever TG is connected with transistor BG1 base stage, that form by coupling capacitance C and dropping resistor R.Large space partly is to amplify and power supply cavity 6.Wherein be provided with the three pipe darlington amplifying circuits of forming by three same polarity transistor BG1, BG2 and BG3, by transistor BG4, be located at the potentiometer with switch W of cavity 6 long side plates and be located at the adjustable display switch circuit that the LED in the cavity 3 is formed, and the direct supply E that connects pole piece and No. 5 batteries series connection of two joints by battery.Be connected to potentiometer with switch W between transistor BG4 base stage and the direct supply E negative terminal, direct supply E anode is connected to each collector loop of adjustable display switch circuit and three pipe darlington amplifying circuits by the switch of potentiometer W, the movable end of potentiometer W is connected to three pipe darlington amplifying circuit output terminal, i.e. transistor BG3 emitters.Place the light switch K on cavity 6 base plates to be connected across direct supply E two ends with the lighting circuit that the miniature spotlight bead XD that is fixed on cavity 3 forms.
The main component parameter of present embodiment is: transistor BG1-4:4 * 3DG6A; Coupling capacitance Co:0.01 microfarad; The C:40 picofarad; Dropping resistor R:1 megaohm; Potentiometer W:51 kilo-ohm.
When the utility model is used for electric field detecting, at first connect the switch of potentiometer with switch W, and it is threaded to and the corresponding position of display switch circuit turn-on threshold values.The curtage signal of the tested lead that is obtained by detecting head is delivered to adjustable display switch circuit through three pipe darlington amplifying circuits.If meet or exceed the display switch circuit turn-on threshold values of setting up in advance, display switch circuit turn-on, the luminous demonstration of LED; If do not have electric current, voltage in the tested lead or only have electric current, the voltage that is not enough to meet or exceed display switch circuit turn-on threshold values, the not luminous demonstration of LED through amplification.When being used to throw light on, connect light switch K, miniature spotlight bead XD is luminous.
Claims (1)
1, a kind of box body 1, lid, dividing plate 2, detecting head, coupled apparatus, amplifying circuit, collector of comprising is connected with the multifunction micro electric field detector of transistor BG4 display switch circuit, lighting circuit and the direct supply E of LED, it is characterized in that:
1.1, detecting head comprises that the induction that is used for the tested lead of noncontact visits sheet TP and the contact feeler lever TG that is used to contact tested lead;
1.2, amplifying circuit by three same polarity transistor BG1, BG2 and BG3 form three the pipe darlington amplifying circuits;
1.3, be connected to potentiometer with switch W between transistor BG4 base stage and direct supply E one end and form adjustable display switch circuit, potentiometer W movable end is connected to three pipe darlington amplifying circuit output terminals, and the direct supply E other end is connected to each collector loop of adjustable display switch circuit and three pipe darlington amplifying circuits by its switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90224232 CN2079299U (en) | 1990-11-22 | 1990-11-22 | Multi-function micro electric field detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90224232 CN2079299U (en) | 1990-11-22 | 1990-11-22 | Multi-function micro electric field detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2079299U true CN2079299U (en) | 1991-06-19 |
Family
ID=4901842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90224232 Withdrawn CN2079299U (en) | 1990-11-22 | 1990-11-22 | Multi-function micro electric field detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2079299U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017107556A1 (en) * | 2015-12-25 | 2017-06-29 | 深圳长城开发科技股份有限公司 | Electricity meter and live wire detection circuit |
| CN110470893A (en) * | 2019-08-30 | 2019-11-19 | 何林 | Induction type electricity measurer |
| CN110470894A (en) * | 2019-09-03 | 2019-11-19 | 何林 | Non-contact inductive test pencil |
-
1990
- 1990-11-22 CN CN 90224232 patent/CN2079299U/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017107556A1 (en) * | 2015-12-25 | 2017-06-29 | 深圳长城开发科技股份有限公司 | Electricity meter and live wire detection circuit |
| CN110470893A (en) * | 2019-08-30 | 2019-11-19 | 何林 | Induction type electricity measurer |
| CN110470894A (en) * | 2019-09-03 | 2019-11-19 | 何林 | Non-contact inductive test pencil |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |