CN2046634U - Electroscope for integrated circuit - Google Patents
Electroscope for integrated circuit Download PDFInfo
- Publication number
- CN2046634U CN2046634U CN 89211104 CN89211104U CN2046634U CN 2046634 U CN2046634 U CN 2046634U CN 89211104 CN89211104 CN 89211104 CN 89211104 U CN89211104 U CN 89211104U CN 2046634 U CN2046634 U CN 2046634U
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- CN
- China
- Prior art keywords
- electroscope
- integrated circuit
- circuit
- sheffer stroke
- signal
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model relates to an electroscope for an integrated circuit. The electroscope for an integrated circuit is used for measuring alternating and direct current voltage in a non-contact mode, and belongs to the field of instruments and meters. A gate and non gate integrated block is adopted to form an induction luminous circuit and an oscillation circuit. When the electroscope for an integrated circuit is adjacent to a conductive wire which is electrified, the electroscope for an integrated circuit can send out light signals and higher bee sound, and the electroscope for an integrated circuit can also judge a zero wire, a fire wire, and a cable wire breaking point.
Description
A kind of integrated circuit electroscope is used for non-cpntact measurement AC and DC voltage, belongs to instrument field.
(on July 31st, 1988 published at " electronics newspaper ", the 31st phase, total No. 408, domestic unified edition number CW51-0091) disclosing a kind of " high-low pressure induction type electroscope " its purpose on is when tested circuit has voltage, this device signal of sounding a buzzer, thus accident of human electric shock's generation avoided.After sensing element is received induced signal, produce vibration at NE555IC, piezoelectric ceramic piece HTD sounds a buzzer.Weak point is that this circuit has only audio response, if produce the line failure of buzzer, whether just can not measure circuit charged, cause misjudgment easily, 555 integrated packages are generally used for the control time-delay or use as oscillator, and itself does not have amplification, when measured signal is more weak, buzzer is faint to be covered by ambient noise easily, is difficult to not hear.
At the prior art insufficient section, the objective of the invention is: design a kind of integrated circuit electroscope, when it when the test line, test line has voltage, and then light emitting diode is lighted, the signal of sounding a buzzer simultaneously, even a little less than the measured signal, sound and optic signal also clearly.
Purpose of the present invention can reach by following measure: design a kind of integrated circuit electroscope, its circuit adopts one four Sheffer stroke gate integrated package as shown in Figure 2, and 74LSOO is contained in electric field induction element senses sheet S and field effect transistor T1(3DJ) afterwards.Sheffer stroke gate 1, Sheffer stroke gate 2, triode T2(3DG6, i.e. driving transistors), LED is formed inducing luminous circuit.Sheffer stroke gate 3, Sheffer stroke gate 4, resistance R 3(350～400K Ω), resistance R 4(150～200K Ω), (150～200pf) form audio oscillator circuits to capacitor C, and circuit produces vibration, drive piezoelectric ceramic piece HTD vibration sounding.K is a toggle switch, back connecting resistance R1 (450～500K Ω), potentiometer R2(40～50K Ω).
The invention is characterized in: adopt one four Sheffer stroke gate integrated package, wherein two Sheffer stroke gates and a triode amplify the rear drive lumination of light emitting diode with induced signal; Two Sheffer stroke gates and resistance, electric capacity are formed oscillatory circuit, drive the piezoelectric ceramic piece sounding.
Fig. 1 is " high-low pressure induction electroscope " circuit diagram
Fig. 2 is " integrated circuit electroscope " circuit diagram
The present invention is further described below in conjunction with embodiment: K closes with the electroscope toggle switch, during near alive circuit, the electric field induction signal is through sensing chip, field effect transistor T1(3DJ) make between its drain electrode, source electrode resistance increase the rising of A point current potential, first Sheffer stroke gate of four Sheffer stroke gate 74LSOO obtains high level, signal amplifies high level of output through two Sheffer stroke gates, driving transistors T2(3DG6) work, the LED conducting is luminous.Simultaneously this signal is delivered to again by Sheffer stroke gate 3, Sheffer stroke gate 4, R3(350K), R4(170K Ω), C(150pf) oscillatory circuit formed, make it produce vibration, driving piezoelectric patches HTD sounds a buzzer.Because this employing LED that driving transistors T2 and Sheffer stroke gate to twice amplification of signal, make and the circuit of HTD are than the circuit sensitivity height that only adopts HTD.When external signal was more weak, sound, light were indicated all clearly, can be not influenced because of external interference.So the electroscope that this acousto-optic all is equipped with has bigger reliability and dirigibility.According to above-mentioned principle, the integrated circuit electroscope can be judged zero line, live wire, and can be used as the breakpoint location of seeking cable break.When the integrated circuit electroscope does not have sound and optic signal when the zero line; When integrated circuit has sound and optic signal when the live wire; Breakpoint place at cable does not have sound and optic signal yet.
The present invention compares present technology and has following advantage: 1, electroscope for integrated circuit is when judging that circuit is whether charged, and sound and optic signal occurs simultaneously, and what guaranteed to measure is safe, reliable, is difficult for producing misjudgment. 2, highly sensitive, acoustical signal is clear. 3, can be used for judging zero line, live wire. 4, can judge the cable breakpoint. 5, the electroscope for integrated circuit volume is little, and is easy to carry. Circuit sensitivity want high. When external signal was more weak, sound, light were indicated all clearly, can be not influenced because of external interference. So all standby electroscope of this acousto-optic has bigger reliability and flexibility. According to above-mentioned principle, electroscope for integrated circuit can be judged zero line, live wire, and can be used as the breakpoint location of seeking cable break. When the close zero line of electroscope for integrated circuit, there is not sound and optic signal; Sound and optic signal is arranged when the close live wire of integrated circuit; Breakpoint place at cable does not have sound and light signal yet.
The present invention compares present technology and has following advantage: 1. electroscope for integrated circuit is when judging that circuit is whether charged, and sound and optic signal occurs simultaneously, and what guaranteed to measure is safe, reliable, is difficult for producing misjudgment. 2. highly sensitive, acoustical signal is clear. 3. can be used for judging zero line, live wire. 4. can judge the cable breakpoint. 5. the electroscope for integrated circuit volume is little, and is easy to carry.
Claims (1)
- A kind of integrated circuit electroscope is made up of sensing chip, laminated cell, switch, piezoelectric ceramic piece, accessory circuit.It is characterized in that: one four Sheffer stroke gate integrated package is arranged, be contained in field effect transistor after, connect triode, light emitting diode after two Sheffer stroke gates, two Sheffer stroke gates become audio oscillator circuit with resistance, capacitance group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89211104 CN2046634U (en) | 1989-01-28 | 1989-01-28 | Electroscope for integrated circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89211104 CN2046634U (en) | 1989-01-28 | 1989-01-28 | Electroscope for integrated circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2046634U true CN2046634U (en) | 1989-10-25 |
Family
ID=4867408
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89211104 Withdrawn CN2046634U (en) | 1989-01-28 | 1989-01-28 | Electroscope for integrated circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2046634U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105158548A (en) * | 2015-08-24 | 2015-12-16 | 国家电网公司 | Novel high-voltage electroscope |
| CN110609199A (en) * | 2019-09-16 | 2019-12-24 | 优利德科技(中国)股份有限公司 | Zero-line and live-line detection and identification method, device and system |
-
1989
- 1989-01-28 CN CN 89211104 patent/CN2046634U/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105158548A (en) * | 2015-08-24 | 2015-12-16 | 国家电网公司 | Novel high-voltage electroscope |
| CN110609199A (en) * | 2019-09-16 | 2019-12-24 | 优利德科技(中国)股份有限公司 | Zero-line and live-line detection and identification method, device and system |
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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 |