CN203786237U - Alternating current zero line and fire line identification circuit - Google Patents
Alternating current zero line and fire line identification circuit Download PDFInfo
- Publication number
- CN203786237U CN203786237U CN201420146245.0U CN201420146245U CN203786237U CN 203786237 U CN203786237 U CN 203786237U CN 201420146245 U CN201420146245 U CN 201420146245U CN 203786237 U CN203786237 U CN 203786237U
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- triode
- connects
- alternating current
- resistance
- emitter
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- Expired - Lifetime
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- 230000006698 induction Effects 0.000 claims abstract description 21
- 239000003990 capacitor Substances 0.000 claims abstract description 5
- 238000013459 approach Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
Abstract
The utility model relates to an alternating current zero line and fire line identification circuit which comprises an input end which is connected with alternating current. The input end is connected with an induction electrode close to the ground or a wall through a resistor R1. The base of a triode Q1 is connected between the induction electrode and the resistor R1. The collector of the triode Q1 is connected with the positive electrode of a direct current power supply through a resistor R2. The emitter of the triode Q1 is connected with the negative electrode of the direct current power supply through a capacitor C1. The emitter of the triode Q1 is connected with the base of a triode Q2 through a resistor R3. The collector of the triode Q2 is connected with the positive electrode of the direct current power supply through a resistor R4. The emitter of the triode Q2 is connected with the negative electrode of the direct current power supply. The collector of the triode Q2 is connected with an output end. According to the utility model, the circuit and the induction electrode form a loop; an input signal is amplified by a secondary amplifying circuit; when the signal is input, low level is output; when no signal is input, high level is output; and zero line and fire line identification is realized.
Description
Technical field
The utility model relates to a kind of zero line live wire identification circuit that can be applicable to the alternating current on all kinds of household electrical appliance.
Background technology
The have access to special requirement of many electrical appliances to zero live wire, once zero line and live wire connect instead, light affect the performance and used life of electrical appliance, serious go back entail dangers to personal safety.The many electrical appliances of China all adopt two core plug at present, when the plug of electrical appliance inserts electrical network socket, just cannot determine that whether the on-position of zero live wire is correct.Because the identification circuit that need to have zero line on household electrical appliance and live wire to identify.
Summary of the invention
In order to overcome the above-mentioned deficiency of prior art, the utility model provides a kind of identification circuit that can identify alternating current zero line and live wire.
The technical scheme in the invention for solving the technical problem is:
Alternating current zero line live wire identification circuit, comprise the input end that connects alternating current, it is characterized in that: input end connects the induction electrode of near-earth or nearly wall by resistance R 1, the base stage that is connected a triode Q1 between described induction electrode and resistance R 1, the collector of triode Q1 connects the positive pole of direct supply by resistance R 2, the emitter of triode Q1 connects the negative pole of direct supply by capacitor C 1, the emitter of triode Q1 also connects the base stage of a triode Q2 by resistance R 3, the collector of triode Q2 connects the positive pole of direct supply by resistance R 4, the emitter of triode Q2 connects the negative pole of direct supply, the collector of triode Q2 is also connected with output terminal.
As preferably, input end directly connects or connects by electric capacity Y one end of alternating current.
Alternating current connects induction electrode by resistance R 1, induction electrode near-earth or nearly wall, form a loop, when the live wire of alternating current is connected to input end, between input end and induction electrode, form voltage difference, electric current passes through, signal input is amplified by triode Q1 and triode Q2, is equivalent to second amplifying circuit, now, the electric current that flows through resistance R 4 is larger, and output terminal is low level.When input end connects zero line, between input end and induction electrode, voltage difference approaches zero, no signal input, output terminal output high level.What can judge connection is zero line or live wire.
Input end directly connects one end of alternating current or isolates safely by electric capacity Y.
The beneficial effects of the utility model are: the utility model is by forming loop with induction electrode, then by second amplifying circuit, input signal are amplified, while having signal input, output low level, during no signal input, output high level, realizes the identification of zero line live wire.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment mono-of the present utility model.
Fig. 2 is the structural representation of embodiment bis-of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
As shown in Figure 1, alternating current zero line live wire identification circuit, comprise the input end 2 that connects alternating current, input end 2 connects the induction electrode 1 of near-earth or nearly wall by resistance R 1, the base stage that is connected a triode Q1 between described induction electrode 1 and resistance R 1, the collector of triode Q1 connects the positive pole of direct supply by resistance R 2, the emitter of triode Q1 connects the negative pole of direct supply by capacitor C 1, the emitter of triode Q1 also connects the base stage of a triode Q2 by resistance R 3, the collector of triode Q2 connects the positive pole of direct supply by resistance R 4, the emitter of triode Q2 connects the negative pole of direct supply, the collector of triode Q2 is also connected with output terminal 3.Input end 2 directly connects one end of alternating current.
Embodiment bis-: as shown in Figure 2, alternating current zero line live wire identification circuit, comprise the input end 2 that connects alternating current, input end 2 connects the induction electrode 1 of near-earth or nearly wall by resistance R 1, the base stage that is connected a triode Q1 between described induction electrode 1 and resistance R 1, the collector of triode Q1 connects the positive pole of direct supply by resistance R 2, the emitter of triode Q1 connects the negative pole of direct supply by capacitor C 1, the emitter of triode Q1 also connects the base stage of a triode Q2 by resistance R 3, the collector of triode Q2 connects the positive pole of direct supply by resistance R 4, the emitter of triode Q2 connects the negative pole of direct supply, the collector of triode Q2 is also connected with output terminal 3.Input end 2 is isolated safely the one end that connects alternating current by electric capacity Y.
Alternating current connects induction electrode by resistance R 1, form a loop, induction electrode near-earth or nearly wall, when the live wire of alternating current is connected to input end, form voltage difference between input end and induction electrode, electric current passes through, signal input is amplified by triode Q1 and triode Q2, is equivalent to second amplifying circuit, now, the electric current that flows through resistance R 4 is larger, and output terminal is low level.When input end connects zero line, between input end and induction electrode, voltage difference approaches zero, no signal input, output terminal output high level.What can judge connection is zero line or live wire.
Input end directly connects one end of alternating current or isolates safely by electric capacity Y.
The utility model is by forming loop with induction electrode, then by second amplifying circuit, input signal amplified, while having signal input, and output low level, during no signal input, output high level, realizes the identification of zero line live wire.
Claims (2)
1. alternating current zero line live wire identification circuit, comprise the input end that connects alternating current, it is characterized in that: input end connects the induction electrode of near-earth or nearly wall by resistance R 1, the base stage that is connected a triode Q1 between described induction electrode and resistance R 1, the collector of triode Q1 connects the positive pole of direct supply by resistance R 2, the emitter of triode Q1 connects the negative pole of direct supply by capacitor C 1, the emitter of triode Q1 also connects the base stage of a triode Q2 by resistance R 3, the collector of triode Q2 connects the positive pole of direct supply by resistance R 4, the emitter of triode Q2 connects the negative pole of direct supply, the collector of triode Q2 is also connected with output terminal.
2. alternating current zero line live wire identification circuit according to claim 1, is characterized in that: described input end directly connects or connect by electric capacity Y one end of alternating current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420146245.0U CN203786237U (en) | 2014-03-28 | 2014-03-28 | Alternating current zero line and fire line identification circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420146245.0U CN203786237U (en) | 2014-03-28 | 2014-03-28 | Alternating current zero line and fire line identification circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203786237U true CN203786237U (en) | 2014-08-20 |
Family
ID=51322411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420146245.0U Expired - Lifetime CN203786237U (en) | 2014-03-28 | 2014-03-28 | Alternating current zero line and fire line identification circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203786237U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105717819A (en) * | 2016-04-22 | 2016-06-29 | 刘向荣 | Air purifier |
| CN105725738A (en) * | 2016-04-22 | 2016-07-06 | 刘向荣 | Electromagnetic rice steaming cabinet |
-
2014
- 2014-03-28 CN CN201420146245.0U patent/CN203786237U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105717819A (en) * | 2016-04-22 | 2016-06-29 | 刘向荣 | Air purifier |
| CN105725738A (en) * | 2016-04-22 | 2016-07-06 | 刘向荣 | Electromagnetic rice steaming cabinet |
| CN105725738B (en) * | 2016-04-22 | 2017-12-05 | 刘向荣 | A kind of Nonradiative electromagnetic steam-cooking cabinet |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |