CN2091021U - Photo-controlled adjustable demagnetizer - Google Patents
Photo-controlled adjustable demagnetizer Download PDFInfo
- Publication number
- CN2091021U CN2091021U CN 91209963 CN91209963U CN2091021U CN 2091021 U CN2091021 U CN 2091021U CN 91209963 CN91209963 CN 91209963 CN 91209963 U CN91209963 U CN 91209963U CN 2091021 U CN2091021 U CN 2091021U
- Authority
- CN
- China
- Prior art keywords
- demagnetization
- demagnetizer
- loop
- automatic control
- photoelectric detection
- 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.)
- Withdrawn
Links
Images
Landscapes
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
The utility model discloses a photo-controlled adjustable demagnetizer, belonging to the definite quantity demagnetizer of instruments and meters. The demagnetization mechanism is designed into that a fixed demagnetization air-core coil is additionally provided with a miniature transformer and a small capacity voltage regulator in the demagnetization loop, matching with a photoelectric detection and automatic control device. The photoelectric detection and the automatic control device are composed of an optoelectronic device comprising a luminous tube and a photoelectric triode, a magnify driving circuit, an interlock circuit, a demagnetization loop and a definite quantity monitoring operating current loop. The photoelectric detection and the automatic control device are characterized in that the full scale current value needed of the meter head being demagnetized can be monitored in a definite quantity way, achieving the purpose of disposable demagnetization. The photo-controlled adjustable demagnetizer of the utility model improves the precision of the demagnetization. Besides, the utility model has the advantages of convenient operation and high work efficiency.
Description
The utility model relates to the demagnetizer of magnet, belongs to the quantitative demagnetizer of instrument and meter.
The demagnetizer ubiquity that is used for instrument and meter at present shortcomings such as precision, inefficiency.For example: the demagnetization part of CHT--03 type Apparatus for magnetising or demagnetising mainly is made up of mains switch, relay, coil, iron core, the utmost point palm etc.When demagnetizing to instrument, gauge outfit is clipped in the utmost point slaps middle, alternating current makes iron core produce alternating magnetic field by coil, make the magnetization of the utmost point palm by the magnetic strength effect simultaneously, make the gauge outfit that is clipped between the utmost point palm demagnetize, it is used for the instrument main weak point of demagnetizing and is: because the demagnetization process does not monitor indirectly, demagnetization voltage does not have enough adjusting fineness yet, thereby the demagnetization precision is very low, again owing to can't demagnetize quantitatively after excessive the magnetizing, might demagnetize again excessively, need magnetize repeatedly, demagnetize, make operating efficiency very low.
The purpose of this utility model provides a kind of light-operated adjustable demagnetizer that improves demagnetization precision and high efficiency.
The purpose of this utility model realizes by following measure:
Demagnetization mechanism is designed to fixing demagnetization air core coil, sets up miniature transformer and low capacity voltage regulator in the demagnetization loop, and is equipped with Photoelectric Detection and automatic control equipment.Photoelectric Detection and automatic control equipment by:
1. the optoelectronic device of forming by luminous tube and phototriode;
2. the amplification driving circuit of forming by operational amplifier, triode and small-sized DC relay etc. that photosignal is handled;
The interlock circuit of forming by auxiliary relay, voltage regulator and transformer etc. that is connected with the amplification driving circuit output relay, the demagnetization loop;
4. the Quantitative Monitoring work loop of forming by the standard microammeter.
It can measure the purpose that is reached disposable demagnetization by the needed full scale current value of demagnetization gauge outfit quantitatively.
The drawing of accompanying drawing is described as follows:
Fig. 1 is: the principle schematic of light-operated adjustable demagnetizer.Light-operated demagnetizer is exactly by the indirect monitoring to the used permanent magnet field of permanent-magnet moving coil instrument, thereby accomplishes the demagnetization process is controlled automatically, makes that demagnetization is promptly accurately quick again.
Fig. 2 is: the structural representation of light-operated adjustable demagnetizer; 1 is casing; 2 is optoelectronic device; 3 is gauge outfit; 4 is degaussion coil; 5 is transformer; 6 is voltage regulator.
Fig. 3 is chain loop.
Fig. 4 is an amplification driving circuit.
Fig. 5 is gauge outfit current monitoring loop.
The utility model will be described in further detail in conjunction with the embodiments:
Voltage regulator TDGS--0.5, capacity 0.5KVA, input～220V, output 0～250V.2A; Transformer DTN--500/220, input 220V, output 36V; Degaussion coil φ 5.5cm, H=10cm, winding diameter are enamel covered wire, the number of turn 665 of 0.9mm; Auxiliary relay: Z27--44,5A ,～220V; Working battery: 1.5V dry cell; Potentiometer W, W are WXD3--13,2K ± 10%.
For example: give the demagnetization of MF--10 type universal instrument, its full scale current value is 9.3 μ A, when tested gauge outfit passes to the electric current of 9.3 μ A, often surplus makes pointer position surpass the full scale line because former gauge outfit magnetizes, the incident light of optoelectronic device is aimed at dial plate full scale line, begin to regulate the handle of voltage regulator, make the meter pointer in degaussion coil descending with certain speed, when pointer goes downwards to when just in time overlapping with the full scale line, pointer changes reflective light intensity, thereby changed the output of photoelectric tube, and cut off the demagnetization power supply by amplification driving circuit, the demagnetization process finishes.
The utility model compared with prior art has following advantage: improved the demagnetization precision 1.; 2. easy to operate, high efficiency. Except the quantitative demagnetization that can be used for instrument and meter, also can be to measurer, cutlery demagnetization.
Claims (1)
1, a kind of light-operated adjustable demagnetizer is made up of mains switch, relay, coil etc., it is characterized in that: demagnetization mechanism is designed to fixing demagnetization air core coil, in the demagnetization loop, set up miniature transformer and low capacity voltage regulator, and be equipped with Photoelectric Detection and automatic control equipment, its Photoelectric Detection and automatic control equipment by:
[1] optoelectronic device of forming by luminous tube and phototriode;
[2] amplification driving circuit of forming by operational amplifier, triode and small-sized DC relay etc. that photosignal is handled;
[3] interlock circuit of forming by auxiliary relay, voltage regulator and transformer etc. that is connected with the amplification driving circuit output relay, demagnetization loop;
[4] the Quantitative Monitoring working current loop of forming by the standard microammeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91209963 CN2091021U (en) | 1991-06-08 | 1991-06-08 | Photo-controlled adjustable demagnetizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91209963 CN2091021U (en) | 1991-06-08 | 1991-06-08 | Photo-controlled adjustable demagnetizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2091021U true CN2091021U (en) | 1991-12-18 |
Family
ID=4918817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91209963 Withdrawn CN2091021U (en) | 1991-06-08 | 1991-06-08 | Photo-controlled adjustable demagnetizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2091021U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110171839A (en) * | 2019-05-14 | 2019-08-27 | 南京科津新材料研究院有限公司 | A kind of smooth demagnetization material and its preparation method and application |
-
1991
- 1991-06-08 CN CN 91209963 patent/CN2091021U/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110171839A (en) * | 2019-05-14 | 2019-08-27 | 南京科津新材料研究院有限公司 | A kind of smooth demagnetization material and its preparation method and application |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204882843U (en) | Transformer remanence detects and demagnetization device | |
| CN107085192B (en) | A kind of method and device thereof measuring ferromagnetic material hysteresis loop in open-flux path | |
| CN105093140A (en) | Transformer remanence detection and demagnetization method and device | |
| CN101702361A (en) | Ultra-low frequency alternating-current (AC) constant-current demagnetization device of large transformer or mutual inductor and demagnetization detection method | |
| CN2091021U (en) | Photo-controlled adjustable demagnetizer | |
| CN1456901A (en) | Soft magnetic material characteristic measuring devices | |
| CN201477201U (en) | Static magnetic property measuring instrument | |
| CN104614688B (en) | For the c-type sensor and its detection method of D.C. magnetic biasing dynamic magnetic-flux measurement | |
| CN2831141Y (en) | Annular ferrite current sensor | |
| CN101858962B (en) | Static magnetic characteristic measuring apparatus | |
| CN2800290Y (en) | Device for detecting thermal stability of sintered neodymium iron boron material for motor | |
| CN2469458Y (en) | Leakage recording instrument | |
| CN85100829A (en) | The multichannel open-type heavy dc comparator | |
| CN220552967U (en) | Transformer degaussing quantization device | |
| CN204495893U (en) | A kind of split-core type meter without internal battery | |
| CN211669351U (en) | On-line quick detection device for material magnetism | |
| CN107315104A (en) | A kind of device for being used to measure pcb board electric current | |
| CN216252274U (en) | Circuit breaker | |
| CN216309093U (en) | Electromagnetic water meter | |
| CN218584948U (en) | Circuit breaker divide-shut brake coil characteristic detection device | |
| CN2071792U (en) | Electric energy metering on-line detector for clamp mutual-inductor | |
| CN1009030B (en) | Induction type ammeter with measuring head | |
| CN114814680A (en) | Dynamic measuring device for hysteresis loop of ferromagnetic material of fault current limiter | |
| CN2121044U (en) | Demagnetizer for watch | |
| CN2266132Y (en) | Current transducer |
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 |