CN202141761U - Production tool electrostatic protection rapid detector - Google Patents
Production tool electrostatic protection rapid detector Download PDFInfo
- Publication number
- CN202141761U CN202141761U CN201120255069U CN201120255069U CN202141761U CN 202141761 U CN202141761 U CN 202141761U CN 201120255069 U CN201120255069 U CN 201120255069U CN 201120255069 U CN201120255069 U CN 201120255069U CN 202141761 U CN202141761 U CN 202141761U
- Authority
- CN
- China
- Prior art keywords
- circuit
- utmost point
- connects
- fet
- output
- Prior art date
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Emergency Alarm Devices (AREA)
Abstract
Disclosed is a production tool electrostatic protection rapid detector, relating to the static electricity detecting technology field. The detector is provided with a detecting circuit at the housing thereof, with the detecting circuit comprising a standard reference circuit, a to-be-detected circuit, and a comparison circuit, wherein the reference circuit and the to-be-detected circuit are respectively connected with the input terminal of the comparison circuit; the output terminal of the comparison circuit is connected with an output circuit; and the output circuit is connected with an acousto-optic alarm device. The production tool electrostatic protection rapid detector can rapidly detect whether the employed tool can meet the requirement or not and satisfy the antistatic requirement of a product.
Description
Technical field
The utility model relates to the electrostatic detection technical field, specifically is a kind of tool of production electrostatic defending fast detecting appearance, is adapted to the employed electric soldering iron of electronic product workshop per pass operation, electric screwdriver etc.
Background technology
In electron trade, the static entrained for fear of the tool of production damages its electronic product that contacts, and all tools of production all require to dispose electrostatic protection apparatus.The tool of production is before starting working every day, and whether the electrostatic grounding resistance that uses digital implementation to measure the tool of production earlier satisfies 0～20 ohm of requirement, and the tool of production of per pass operation all has measured several times every day.In real work, it is very inconvenient to use digital multimeter to detect, and the flicker of beating of the not easy to operate and numerical value of a people is difficult for reading, and this method is not only lost time but also be unstable.
Summary of the invention
In order to solve the shortcoming of above-mentioned prior art, the utility model provides a kind of tool of production electrostatic defending fast detecting appearance, and whether the instrument that can detect use fast meets the requirements, and guarantees the electrostatic prevention requirement of product.
The utility model is realized with following technical scheme: a kind of tool of production electrostatic defending fast detecting appearance; Comprise the testing circuit that is installed in enclosure interior; Described testing circuit comprises reference circuit, circuit under test and comparator circuit; Reference circuit, circuit under test are connected with the input end of comparator circuit respectively, and the output terminal of comparator circuit connects an output circuit, and output circuit connects acoustic-optic alarm.
It further is: described comparator circuit adopts two-way comparer LM393; Described reference circuit comprises the FET I; Circuit under test comprises the FET II; Described output circuit comprises Sheffer stroke gate control circuit HCC4011B, triode and relay, and described acoustic-optic alarm comprises green LED, red light emitting diodes and buzzer siren; The g utmost point of FET I is connected with the positive input terminal of two-way comparer LM393 through resistance, s utmost point ground connection, and the d utmost point connects power supply, is connected a variable resistor between the g utmost point and the d utmost point; The g utmost point of FET II connects the negative input end of two-way comparer LM393, and the d utmost point connects power supply, and the s utmost point is as the test side; The output terminal Sheffer stroke gate control circuit HCC4011B of two-way comparer LM393 connects, and Sheffer stroke gate control circuit HCC4011B output terminal connects the base stage of triode, and the collector of triode is connected with relay coil, grounded emitter; The relay normally closed contact connects green LED, and relay normally open contact connects red light emitting diodes and buzzer siren respectively.
Principle of work: when the ground connection resistance of instrument to be measured during less than 20 ohm, the comparison of warp and reference circuit, comparer output noble potential " 1 "; Get into Sheffer stroke gate control circuit HCC4011B with another road noble potential " 1 " of comparer; Make Sheffer stroke gate control circuit HCC4011B output electronegative potential " 0 ", not conducting of triode, the relay normally closed contact of not working is connected; Green LED gets electroluminescence, representes that instrument to be measured satisfies the electrostatic defending requirement; When the stake resistance of instrument to be measured during greater than 20 ohm, the comparison of warp and reference circuit, comparer output electronegative potential " 0 "; Another road noble potential " 1 " with comparer gets into Sheffer stroke gate control circuit HCC4011B, makes Sheffer stroke gate control circuit HCC4011B output noble potential " 1 ", the triode conducting; Relay work; Normally opened contact is connected red light emitting diodes and is got electroluminescence, and buzzer warning representes that instrument to be measured does not satisfy the electrostatic defending requirement simultaneously.
The beneficial effect of the utility model is: whether the instrument that can detect use fast meets the requirements, and guarantees the electrostatic prevention requirement of product.
Description of drawings
Below in conjunction with accompanying drawing the utility model is described further.
Fig. 1 is the utility model circuit diagram;
Fig. 2 is the utility model structural representation.
Among the figure: A, reference circuit, B, circuit under test, C, comparator circuit, D, output circuit, E, acoustic-optic alarm, have the connecting line of crocodile clip at F.
Embodiment
As shown in Figure 1; Tool of production electrostatic defending fast detecting appearance; Comprise the testing circuit that is installed in enclosure interior, described testing circuit comprises reference circuit A, circuit under test B and comparator circuit C, and reference circuit A, circuit under test B are connected with the input end of comparator circuit C respectively; The output terminal of comparator circuit C connects an output circuit D, and output circuit D connects acoustic-optic alarm E.
Described comparator circuit C adopts two-way comparer LM393, and described reference circuit A comprises the FET I, and circuit under test B comprises the FET II, and described FET I and FET II adopt the FET of N type raceway groove; Described output circuit D comprises Sheffer stroke gate control circuit HCC4011B, triode and relay; Described acoustic-optic alarm E comprises green LED, red light emitting diodes and buzzer siren.The g utmost point of FET I is connected with the positive input terminal of two-way comparer LM393 through resistance, s utmost point ground connection, and the d utmost point connects power supply, is connected a variable resistor between the g utmost point and the d utmost point; The g utmost point of FET II connects the negative input end of two-way comparer LM393, and the d utmost point connects power supply, and the s utmost point is as the test side; The output terminal Sheffer stroke gate control circuit HCC4011B of two-way comparer LM393 connects, and Sheffer stroke gate control circuit HCC4011B output terminal connects the base stage of triode, and the collector of triode is connected with relay coil, grounded emitter; The relay normally closed contact connects green LED, and relay normally open contact connects red light emitting diodes and buzzer siren respectively.
As shown in Figure 2; The connecting line F that will have crocodile clip is connected with the s utmost point of FET II through the port on the housing; Crocodile clip is clipped on the cutter head of electric screwdriver or is clipped on the soldering tip of electric soldering iron, and the ground wire of ground connection detector is connected on the static ground wire of production line, and the 9V electricity inserts ground connection detector power interface; Press keyswitch SI, whether the sound through luminotron and hummer satisfies the electrostatic defending requirement with the stake resistance of confirming electric screwdriver or electric soldering iron.
The course of work: with the contact product end of instrument to be measured; Connect through the crocodile clip on the detector; Insert when keyswitch SI presses the 9V power supply, the negative terminal that instrument to be measured is connected to two-way comparer LM393 through and the comparison of reference circuit A, it still is " 0 " that an end of confirming two-way comparer LM393 is output as " 1 "; The output port that makes NAND circuit is noble potential or electronegative potential, and the collector of triode is connected with relay coil; When the ground connection resistance of instrument to be measured was in 0～20 ohm of scope, relay was not worked, and green light is bright, and hummer does not ring simultaneously, representes that instrument to be measured is qualified.When the ground connection resistance of instrument to be measured during greater than 20 ohm, relay work red light is bright, and buzzer warning representes that instrument to be measured is defective simultaneously.
Claims (3)
1. tool of production electrostatic defending fast detecting appearance; Comprise the testing circuit that is installed in enclosure interior; It is characterized in that: described testing circuit comprises reference circuit (A), circuit under test (B) and comparator circuit (C); Reference circuit (A), circuit under test (B) are connected with the input end of comparator circuit (C) respectively, and the output terminal of comparator circuit (C) connects an output circuit (D), and output circuit (D) connects acoustic-optic alarm (E).
2. tool of production electrostatic defending fast detecting appearance according to claim 1; It is characterized in that: described comparator circuit (C) adopts two-way comparer LM393; Described reference circuit (A) comprises the FET I; Circuit under test (B) comprises the FET II, and described output circuit (D) comprises Sheffer stroke gate control circuit HCC4011B, triode and relay, and described acoustic-optic alarm (E) comprises green LED, red light emitting diodes and buzzer siren; The g utmost point of FET I is connected with the positive input terminal of two-way comparer LM393 through resistance, s utmost point ground connection, and the d utmost point connects power supply, is connected a variable resistor between the g utmost point and the d utmost point; The g utmost point of FET II connects the negative input end of two-way comparer LM393, and the d utmost point connects power supply, and the s utmost point is as the test side; The output terminal Sheffer stroke gate control circuit HCC4011B of two-way comparer LM393 connects, and Sheffer stroke gate control circuit HCC4011B output terminal connects the base stage of triode, and the collector of triode is connected with relay coil, grounded emitter; The relay normally closed contact connects green LED, and relay normally open contact connects red light emitting diodes and buzzer siren respectively.
3. tool of production electrostatic defending fast detecting appearance according to claim 2 is characterized in that: described FET I and FET II adopt the FET of N type raceway groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120255069U CN202141761U (en) | 2011-07-19 | 2011-07-19 | Production tool electrostatic protection rapid detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120255069U CN202141761U (en) | 2011-07-19 | 2011-07-19 | Production tool electrostatic protection rapid detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202141761U true CN202141761U (en) | 2012-02-08 |
Family
ID=45552816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120255069U Expired - Fee Related CN202141761U (en) | 2011-07-19 | 2011-07-19 | Production tool electrostatic protection rapid detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202141761U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103353567A (en) * | 2013-06-14 | 2013-10-16 | 苏州天华超净科技股份有限公司 | Online monitor for ESD grounding system |
| CN103792434A (en) * | 2014-03-05 | 2014-05-14 | 国家电网公司 | Ground resistance monitoring device and monitoring method thereof |
| CN113258953A (en) * | 2021-06-25 | 2021-08-13 | 成都爱旗科技有限公司 | Radio frequency device, communication device and electrostatic protection method of radio frequency device |
-
2011
- 2011-07-19 CN CN201120255069U patent/CN202141761U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103353567A (en) * | 2013-06-14 | 2013-10-16 | 苏州天华超净科技股份有限公司 | Online monitor for ESD grounding system |
| CN103792434A (en) * | 2014-03-05 | 2014-05-14 | 国家电网公司 | Ground resistance monitoring device and monitoring method thereof |
| CN113258953A (en) * | 2021-06-25 | 2021-08-13 | 成都爱旗科技有限公司 | Radio frequency device, communication device and electrostatic protection method of radio frequency device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202141761U (en) | Production tool electrostatic protection rapid detector | |
| CN203445205U (en) | Intelligent monitoring system for battery ballooning | |
| CN204964698U (en) | Circuit board detecting system | |
| CN205643590U (en) | Multicore cable fault detection ware | |
| CN201464588U (en) | Polarity measurement circuit of electrolytic capacitor | |
| CN203894310U (en) | Coal mine explosion-proof power supply detection electricity verification and feed device | |
| CN2775667Y (en) | Magnetic meter pen | |
| CN107153144B (en) | A kind of automotive wire bundle detection device and application method | |
| CN105486965B (en) | A kind of cable detector | |
| CN202495743U (en) | Water falling automatic detecting device for mobile electronic terminal product | |
| CN103698661A (en) | Cable breakage detection device | |
| CN210014867U (en) | Thrust test tool | |
| CN203849397U (en) | Anti-virtual connection detection device for secondary crimping screw of to-be-detected low-voltage current transformer | |
| CN203490312U (en) | Aging detection circuit of grounding wire of electric equipment | |
| CN201130216Y (en) | Apparatus for automatically detecting voltage essential resistance | |
| CN201876529U (en) | Battery performance testing device | |
| CN202794460U (en) | Hall proximity switch failure detector | |
| CN206378519U (en) | ECU signal measurement apparatus | |
| CN205407415U (en) | High accuracy AC low voltage power switch board cabinet information collection system based on FPGA | |
| CN204256125U (en) | Smart key detection system | |
| CN103207349A (en) | Detection device and method for power battery sampling wire harness | |
| CN103472345A (en) | Aging detection circuit of grounding wire of electric equipment | |
| CN204792707U (en) | Detect device of thin -film solar cell sculpture effect | |
| CN203385814U (en) | Automotive ABS wire harness detection bench | |
| CN220105247U (en) | Intelligent electric leakage detection system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120208 Termination date: 20200719 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |