CN205426978U - Solid -state voltage standard device of direct current - Google Patents
Solid -state voltage standard device of direct current Download PDFInfo
- Publication number
- CN205426978U CN205426978U CN201521018992.7U CN201521018992U CN205426978U CN 205426978 U CN205426978 U CN 205426978U CN 201521018992 U CN201521018992 U CN 201521018992U CN 205426978 U CN205426978 U CN 205426978U
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- circuit
- voltage
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- standard device
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Abstract
The utility model provides a solid -state voltage standard device of direct current. Be equipped with front panel and rear panel on the casing, the front panel has set gradually the host computer switch for liquid crystal display operation screen on the rear panel, output terminal, high -end output terminal, low side output terminal, ground terminal and protection terminal, be equipped with the reference circuit in the casing, power supply circuit and voltage pre -stabilizing circuit are connected, and for voltage pre -stabilizing circuit provides the power, voltage pre -stabilizing circuit and benchmark circuit connection, reference circuit pass through operational circuit and partial pressure circuit connection, 1.018V and 1V voltage source are drawn forth from bleeder circuit to operational circuit direct output 10V voltage source. The utility model discloses the performance index that can make the voltage standard device obtains improving, makes 1V, 10V and 1.018V reference voltage's transmission obtain better guarantee. It is suitable applied as solid -state voltage standard device of direct current.
Description
Technical field
This utility model provides the instrument in electronic surveying field, specifically DC solid voltage standard devices.
Background technology
Domestic starting to develop the DC voltage reference standard of electronic type from early eighties, product the most representative to the early 1990s, that performance is optimal is the BY2501 type DC voltage reference standard of Beijing Radio Technology Inst..Its moon uncertainty is 10 × 10-6, year uncertainty be 30 × 10-6, temperature coefficient is 1 × 10-6/ DEG C, the normal cell of less than 0.005 grade can only be replaced.Gap is very big compared with external product, too far behind to catch up.The monopolization of external product to be reversed, it is necessary to this series products of level on domestic.
According to investigation, the voltage reference such as 1V, 10V of major part measurement technology mechanism remains saturated standard cell at present.Such normal cell has a shortcoming that its uncertainty is low, year uncertainty minimum be smaller than 0.5 × 10-6/ year.But its temperature coefficient is big, generally-40 × 10-6/ DEG C, its shortcoming is also apparent from, even if using " temperature electromotive force " correction formula accurately, the impact of its temperature is the most complicated；Additionally it is difficult to transport, and anti-vibration and impact property are poor；Its most fatal shortcoming is can not be short-circuit, and once short circuit is it is possible to thoroughly damage.Being based on this reason, the use of normal cell is all had some limitations by many units.
Summary of the invention
The deficiency existed for prior art, this utility model provides DC solid voltage standard devices.This device, by arranging reference circuit in casing, solves the technical problem that DC solid voltage standard occurs.
The scheme that this utility model solution technical problem is used is:
Casing is provided with front panel and rear board, and front panel is liquid crystal display operation screen, and rear board is disposed with host switch, lead-out terminal, high-end lead-out terminal, low side lead-out terminal, ground terminal and protection terminal；
Being connected with pre-mu balanced circuit built with reference circuit, power circuit in casing, provide power supply for pre-mu balanced circuit, pre-mu balanced circuit is connected with reference circuit, and connecting on reference circuit has constant-temperature circuit, and reference circuit is connected with bleeder circuit by discharge circuit；Discharge circuit directly exports 10V voltage source, draws 1.018V and 1V voltage source from bleeder circuit.
Good effect, this utility model DC reference standard device can not only solve the shortcoming that normal cell exists, additionally it is possible to makes the performance indications of voltage standard devices be improved, makes the transmission of 1V, 10V and 1.018V reference voltage preferably be ensured.And can use as the voltage standard of metrological services at different levels, it is also possible to as check standard and Transfer Standards in high-grade voltage MAP tests.Suitably apply as DC solid voltage standard devices.
Accompanying drawing explanation
Fig. 1 is that this utility model front panel arranges figure；
Fig. 2 is that this utility model rear board arranges figure；
Fig. 3 is this utility model reference circuit pie graph.
In figure, 1. front panel, 1.1. liquid crystal display operation screen; 2. rear board, 2.1. host switch, 2.2. lead-out terminal; the most high-end lead-out terminal, 2.4. low side lead-out terminal, 2.5. ground terminal; 2.6. terminal, the most pre-mu balanced circuit, 4. power circuit are protected; 5. constant-temperature circuit; 6. reference circuit, 7. discharge circuit, 8. bleeder circuit.
Detailed description of the invention
Shown in Fig. 1 and Fig. 2, casing is provided with front panel 1 and rear board 2, and front panel is liquid crystal display operation screen 1.1; host switch 2.1, lead-out terminal 2.2, high-end lead-out terminal 2.3 it is disposed with on rear board; low side lead-out terminal 2.4, ground terminal 2.5 and protection terminal 2.6；
Shown in Fig. 3, it is connected with pre-mu balanced circuit 3 built with reference circuit, power circuit 4 in casing, power supply is provided for pre-mu balanced circuit, pre-mu balanced circuit is connected with reference circuit 6, and connecting on reference circuit has constant-temperature circuit 5, and reference circuit is connected with bleeder circuit 8 by discharge circuit 7；Discharge circuit directly exports 10V voltage source, draws 1.018V and 1V voltage source from bleeder circuit.
Work process of the present utility model:
DC source carries out voltage stabilizing by pre-mu balanced circuit, after voltage stabilizing under temperature constant state, forms reference voltage electric current, and reference voltage electric current passes through amplifier and dividing potential drop, and the voltage x current that output 10V, 1V and 1.018V is stable, for test instrunment or equipment.
This utility model illustrates compared with the prior art:
It is currently used for outputting standard voltage and generally uses temperature control normal cell, be in use very careful, it is to avoid short circuit and concussion.During carrying out transmission of quantity value, the shortcoming that normal cell is inconvenient to use is especially prominent.From the point of view of the process of each unit censorship normal cell, its manpower and materials expended also are the biggest.Just can carry out during particularly the use of normal cell must be limited in the laboratory with standard working environment, the Metrology Support work for metrological service of basic unit outfield work under bad environment is difficult to adapt to.
This utility model is by arranging reference circuit in housing, it is achieved the output of normal voltage, overcomes the shortcoming that existing standard battery exists, and is not limited by temperature and environment, and output voltage is accurate, highly reliable.
Claims (1)
1. DC solid voltage standard devices, is characterized in that:
Casing is provided with front panel (1) and rear board (2); front panel is liquid crystal display operation screen (1.1); host switch (2.1) it is disposed with on rear board; lead-out terminal (2.2); high-end lead-out terminal (2.3); low side lead-out terminal (2.4), ground terminal (2.5) and protection terminal (2.6)；
In casing built with reference circuit, power circuit (4) is connected with pre-mu balanced circuit (3), power supply is provided for pre-mu balanced circuit, pre-mu balanced circuit is connected with reference circuit (6), connecting on reference circuit and have constant-temperature circuit (5), reference circuit is connected with bleeder circuit (8) by discharge circuit (7)；Discharge circuit directly exports 10V voltage source, draws 1.018V and 1V voltage source from bleeder circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521018992.7U CN205426978U (en) | 2015-12-10 | 2015-12-10 | Solid -state voltage standard device of direct current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521018992.7U CN205426978U (en) | 2015-12-10 | 2015-12-10 | Solid -state voltage standard device of direct current |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205426978U true CN205426978U (en) | 2016-08-03 |
Family
ID=56515359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521018992.7U Expired - Fee Related CN205426978U (en) | 2015-12-10 | 2015-12-10 | Solid -state voltage standard device of direct current |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205426978U (en) |
-
2015
- 2015-12-10 CN CN201521018992.7U patent/CN205426978U/en not_active Expired - Fee Related
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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: 20160803 Termination date: 20161210 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |