CN202758753U - Digital adjustable capacitance box - Google Patents
Digital adjustable capacitance box Download PDFInfo
- Publication number
- CN202758753U CN202758753U CN 201220273179 CN201220273179U CN202758753U CN 202758753 U CN202758753 U CN 202758753U CN 201220273179 CN201220273179 CN 201220273179 CN 201220273179 U CN201220273179 U CN 201220273179U CN 202758753 U CN202758753 U CN 202758753U
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- CN
- China
- Prior art keywords
- relay
- capacitance
- digital adjustable
- panel
- matrix switch
- 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
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- Measurement Of Resistance Or Impedance (AREA)
Abstract
A digital adjustable capacitance box comprises a standard cabinet, a panel, a keyboard and a power supply arranged on the panel, a single chip microcomputer, an interface circuit, a relay matrix switch, basic capacitance units, a display circuit and a discharging protection circuit arranged in the standard cabinet, a real-time displaying LCD display screen arranged in the center of the panel, and three light-emitting diodes uniformly distributed above the LED display screen and used for indicating the working state. The digital adjustable capacitance box is characterized in that the basic capacitance unit comprises a plurality of groups of four standard capacitors at the ratio of 4:3:2:1, the single chip microcomputer decodes received keyboard key information and divides the decoded keyboard key information into two routes, one route of the decoded keyboard key information is sent to the LCD display screen for displaying the set capacitance value, the other route of the decoded keyboard key information is sent to the relay matrix switch unit for completing the converting of the codes into corresponding relay action and gating the corresponding relay, the basic capacitance unit controlled by the gated relay is outputted, and the needed capacitance value is finally outputted.
Description
Technical field
The utility model belongs to electronic measuring technology field, relates to a kind of digital adjustable tank.
Background technology
In electronic equipment development, debugging, transformation and maintenance process, the adjustable electric tank can in time provide continuously adjustable capacitance, is a kind of very practical electronic instrument.At present, all kinds of adjustable electric tanks generally all form several decimal system rotating disks by several groups 9 or 10 electric capacity, adopt mechanical type band switch choice criteria electric capacity, such capacitive often exists structure heaviness, complicated operation, demonstration not intuitively and the problem such as accuracy is not high.
The utility model content
In order to overcome the directly perceived and not high deficiency of accuracy of existing capacitive structure heaviness, complex operation, demonstration, the utility model provides a kind of digital adjustable tank, this capacitive not only can carry out real-time digital by the LCD liquid crystal display screen and show, and can utilize easily the size of keyboard control capacittance output valve.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of digital adjustable tank is provided; it comprises standard PC case; panel; be arranged on keyboard and mains switch on the panel; be arranged on the single-chip microcomputer in the standard PC case; interface circuit; the relay matrix switch; basic capacitor cell; display circuit and discharge protection circuit; be arranged on the real-time demonstration LCD display of panel central authorities; and be arranged on evenly distributedly three light-emitting diodes that are used to refer to operating state directly over the LCD display; it is characterized in that: basic capacitor cell is 4: 3: 2 by many groups of 4 ratios: 1 standard capacitor consists of; single-chip microcomputer is divided into two-way after the keyboard information decoding that receives is processed; one the tunnel send LCD display; demonstrate capacitance is set; the relay matrix switch element is sent on another road; finish code is converted to the corresponding actuating of relay; the relay that gating is corresponding with the basic capacitor cell output of this Control, is finally exported required capacitance.
Preferably, each relay in the relay matrix switch element is outwards exported corresponding capacitance signal by its total signal anode and negative terminal.
Preferably, it is independent of one another that each organizes described basic capacitor cell.
Preferably, described three light-emitting diodes are indicated respectively operation, discharge, outrange.
The utlity model has following beneficial effect:
The digital adjustable tank that the utility model relates to, the user can select required capacitance by the numeric keypad button, controlled the output of required capacitance signal by single-chip microcomputer and relay matrix switch, carry out real-time digital by the LCD LCDs and show, have easy and simple to handle, intuitive display, high efficiency and accuracy advantages of higher.
The digital adjustable tank that the utility model relates to, special design low-power consumption mode, also can be by the required capacitance signal of the quick output of low-power consumption mode one key as the user, have convenient the use and the advantage such as energy-conserving and environment-protective.
The digital adjustable tank that the utility model relates to can provide the exact value of each point of capacitive by periodic calibration, and it is deposited in the display memory.When the capacitance of each point of capacitive changes, can revise the standard capacitor value of storing in the internal memory easily by calibration procedure.
The digital adjustable tank that the utility model relates to, the exact value of capacitive output capacitance signal is shown in real time, just can be under the condition of equal electric capacity accuracy, the electric capacity output accuracy class higher than common electrical tank is provided, perhaps under the condition of equal output capacitance accuracy, significantly reduce manufacturing cost.
Description of drawings
Further specify the utility model below in conjunction with drawings and Examples, but therefore the utility model is not limited among the described scope of embodiments.
Fig. 1 is the digital adjustable tank schematic block circuit diagram that the utility model relates to.
Among the figure: 1. single-chip microcomputer, 2. keyboard, 3. interface circuit, 4. relay matrix switch, 5. capacitor cell, 6. display circuit, 7. discharge protection circuit.
Embodiment
In Fig. 1, a kind of digital adjustable tank is shown, it mainly is made of single-chip microcomputer 1, keyboard 2, interface circuit 3, relay matrix switch 4, basic capacitor cell 5, display circuit 6, discharge protection circuit 7.Single-chip microcomputer 1, keyboard 2, relay matrix switch 4, display circuit 6 link to each other with interface circuit 3 respectively, and relay matrix switch 4 is being controlled respectively basic capacitor cell 5 and discharge protection circuit 7.After the user is by the required capacitance of keyboard 2 inputs, single-chip microcomputer 1 receives keyboard 2 key informations by interface circuit 3, first with key information decoding and carry out logical transition, then be divided into two-way, lead up to interface circuit 3 liquor charging crystal display screens, demonstrate required capacitance, relay matrix switch 4 is sent by interface circuit 3 in another road, finish that code is converted to the corresponding actuating of relay, the corresponding basic capacitor cell of gating is finally exported required capacitance by signal output part.Basic capacitor cell 5 is 4: 3: 2 by many groups of 4 ratios: 1 standard capacitor consists of, and is finally composed in parallel the decimal system adjustable electric tank of expression 0-9 by many groups 4 basic capacitor cells 5.It is independent of one another that each organizes basic capacitor cell 5.Three light-emitting diodes are indicated respectively operation, discharge, outrange.
Claims (4)
1. digital adjustable tank; it comprises standard PC case; panel; be arranged on keyboard and mains switch on the panel; be arranged on the single-chip microcomputer in the standard PC case; interface circuit; the relay matrix switch; basic capacitor cell; display circuit and discharge protection circuit; be arranged on the real-time demonstration LCD display of panel central authorities; and be arranged on evenly distributedly three light-emitting diodes that are used to refer to operating state directly over the LCD display; it is characterized in that; basic capacitor cell is 4: 3: 2 by many groups of 4 ratios: 1 standard capacitor consists of; single-chip microcomputer is divided into two-way after the keyboard information decoding that receives is processed; one the tunnel send LCD display; demonstrate capacitance is set; the relay matrix switch element is sent on another road, finishes code is converted to the corresponding actuating of relay, the relay that gating is corresponding; with the basic capacitor cell output of this Control, finally export required capacitance.
2. digital adjustable tank according to claim 1 is characterized in that, each relay in the described relay matrix switch element is outwards exported corresponding capacitance signal by its total signal anode and negative terminal.
3. digital adjustable tank according to claim 1 is characterized in that, it is independent of one another that each organizes described basic capacitor cell.
4. digital adjustable tank according to claim 1 is characterized in that, described three light-emitting diodes are indicated respectively operation, discharge, outrange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220273179 CN202758753U (en) | 2012-06-12 | 2012-06-12 | Digital adjustable capacitance box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220273179 CN202758753U (en) | 2012-06-12 | 2012-06-12 | Digital adjustable capacitance box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202758753U true CN202758753U (en) | 2013-02-27 |
Family
ID=47737921
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220273179 Expired - Fee Related CN202758753U (en) | 2012-06-12 | 2012-06-12 | Digital adjustable capacitance box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202758753U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109390153A (en) * | 2018-10-18 | 2019-02-26 | 北京北广科技股份有限公司 | A kind of high speed variable capacitor based on digital circuit driving |
-
2012
- 2012-06-12 CN CN 201220273179 patent/CN202758753U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109390153A (en) * | 2018-10-18 | 2019-02-26 | 北京北广科技股份有限公司 | A kind of high speed variable capacitor based on digital circuit driving |
| CN109390153B (en) * | 2018-10-18 | 2022-01-07 | 北京北方华创微电子装备有限公司 | High-speed variable capacitor based on digital circuit driving |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130227 Termination date: 20140612 |