CN2207597Y - Digital d.c voltage stabilizer - Google Patents
Digital d.c voltage stabilizer Download PDFInfo
- Publication number
- CN2207597Y CN2207597Y CN 94212007 CN94212007U CN2207597Y CN 2207597 Y CN2207597 Y CN 2207597Y CN 94212007 CN94212007 CN 94212007 CN 94212007 U CN94212007 U CN 94212007U CN 2207597 Y CN2207597 Y CN 2207597Y
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- voltage
- circuit
- chip microcomputer
- output
- output voltage
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- Expired - Fee Related
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- Control Of Voltage And Current In General (AREA)
Abstract
A digital direct current voltage stabilizer is composed of a variable voltage circuit, a rectification circuit, a filter circuit, a voltage-stabilizing circuit, an output voltage regulating circuits, a D / A conversion circuit, an A/D conversion circuit, a single chip microcomputer control system, a keyboard, a displayer, etc. High precision and stable direct current voltage is provided to load through the regulating of the output voltage regulating circuit by commercial power after filleting filtering voltage-stabilizing. The output voltage regulating circuit is controlled by the D/A conversion circuit of which the digital signal comes from the magnitude of voltage typed by a single chip microcomputer according to the keyboard, and meantime, the digital signal given to the D / A conversion circuit by the single chip microcomputer is endlessly corrected according to the output direct current voltage value fed back by the A/D conversion circuit; meantime, the typed magnitude of voltage is displayed out by the displayer.
Description
The utility model relates to a kind of digital direct current stabilizer that alternating voltage is converted to DC voltage.
Existing direct current stabilizer generally adopts the mode of resistance pressure regulation to regulate output voltage, obtain magnitude of voltage accurately, needs to transfer while measuring when loading, and uses very inconvenient; Simultaneously, this direct current stabilizer is to come regulated output voltage by the sampling of steady partially voltage is amplified, and output voltage can fluctuate with the variation of load, therefore, and the very low instability of output voltage precision.
The utility model is intended to propose a kind of easy to use, and the high and stable digital direct current stabilizer of output voltage precision is to overcome above-mentioned defective.
The digital direct current stabilizer that the utility model proposes is by transformation, rectification, filtering, voltage stabilizing, output voltage regulation circuit is formed, it is characterized in that: the input end of A/D translation circuit links to each other with the output terminal of output voltage regulation circuit, the output terminal of A/D translation circuit is connected with the input end of single-chip microcomputer, the input end of D/A translation circuit links to each other with the output terminal of single-chip microcomputer, the output terminal of D/A translation circuit links to each other with the input end of output voltage regulation circuit, and the output terminal of keyboard is connected with the input end of the input end of single-chip microcomputer and display.Civil power provides DC voltage by output voltage regulation circuit to load after transformation, rectification, filtering, voltage stabilizing; During use, by keyboard input required voltage value, display shows this magnitude of voltage, and single-chip microcomputer send digital signal according to the magnitude of voltage of input to the D/A translation circuit, and output voltage regulation circuit is controlled by the digital signal that single-chip microcomputer is given the D/A translation circuit; Simultaneously, the A/D translation circuit is transformed into digital signal with the output voltage of sampling and feeds back to single-chip microcomputer, and whether single-chip microcomputer calculates output voltage according to the digital signal of A/D translation circuit feedback correct, as incorrect, then adjust the output of D/A conversion, so repeatedly, correct up to output voltage.
This digital direct current stabilizer adopts keyboard to import needed magnitude of voltage, and is therefore easy to operate; Simultaneously, to the output voltage correction of constantly taking a sample, when load changes, the monolithic function is adjusted output power according to the digital signal of A/D translation circuit feedback, thereby keeps the stable of output voltage, simultaneously, owing to use high-precision reference voltage source, therefore can obtain high-precision output voltage.
Below in conjunction with drawings and Examples the circuit structure of the present utility model and the course of work are further described.
Fig. 1 is the circuit block diagram of the utility model embodiment.
Fig. 2 is the circuit theory diagrams of the series regulator part of the utility model embodiment.
Fig. 3 is the circuit theory diagrams of the output voltage adjustment member of the utility model embodiment.
With reference to Fig. 1, Fig. 2, Fig. 3, transformation, rectification, filtering with 220 volts 50 hertz supply voltage transformation rectifying and wave-filterings, become DC voltage by T, D-D4, C1, deliver to that switch is adjusted P1, P2, P3, R9-R11 convert 35 volts of stable DC voltage to; 35 volts of DC voltage are via the mu balanced circuit that D5, C2, R12, IC1, IC2 form, and convert stable 5 volts, positive and negative 15 volts of DC voltage to and use for digital direct current depressor.Simultaneously, 35 volts of DC voltage convert required DC voltage to by the output voltage regulation circuit that R1-R8, D6, P4, P5, IC3 form, and use for load.Output voltage regulation circuit is controlled by the D/A translation circuit of IC5, IC7, IC8 composition, the digital signal of D/A translation circuit comes from the magnitude of voltage that single-chip microcomputer is keyed in according to determinant keyboard, single-chip microcomputer is made up of IC9, IC10, IC11, and determinant keyboard is made up of one group of push-button array and IC12.Meanwhile, the dc voltage conversion digital signal of the digital direct current stabilizer output that the A/D translation circuit that IC4, IC6, IC7 form will be sampled feeds back to single-chip microcomputer, whether the DC voltage that single-chip microcomputer calculates output according to the digital signal of A/D translation circuit feedback is correct, as incorrect, then adjust the digital signal of giving the D/A translation circuit, so repeatedly, till the DC voltage of exporting is correct.Simultaneously, form display by charactron, IC13, IC14, IC15, IC16, the magnitude of voltage that determinant keyboard is keyed in shows.
Claims (1)
1, a kind of digital direct current stabilizer is by transformation, rectification, filtering, voltage stabilizing, output voltage regulation circuit is formed, it is characterized in that: the input end of A/D translation circuit links to each other with the output terminal of output voltage regulation circuit, the output terminal of A/D translation circuit is connected with the input end of single-chip microcomputer, the input end of D/A translation circuit links to each other with the output terminal of single-chip microcomputer, the output terminal of D/A translation circuit links to each other with the input end of output voltage regulation circuit, and the output terminal of keyboard is connected with the input end of the input end of single-chip microcomputer and display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94212007 CN2207597Y (en) | 1994-05-12 | 1994-05-12 | Digital d.c voltage stabilizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94212007 CN2207597Y (en) | 1994-05-12 | 1994-05-12 | Digital d.c voltage stabilizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2207597Y true CN2207597Y (en) | 1995-09-13 |
Family
ID=33828994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94212007 Expired - Fee Related CN2207597Y (en) | 1994-05-12 | 1994-05-12 | Digital d.c voltage stabilizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2207597Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102591388A (en) * | 2011-11-04 | 2012-07-18 | 中国科学院紫金山天文台 | Direct current bias source for superconductor detector |
| CN103499990A (en) * | 2012-10-11 | 2014-01-08 | 成都芯源系统有限公司 | Voltage stabilizer, system and method for digitally correcting voltage stabilizer |
| CN104023920A (en) * | 2011-12-30 | 2014-09-03 | 英特尔公司 | Ultra-capacitor based energy storage for appliances |
| CN105190465A (en) * | 2013-03-15 | 2015-12-23 | 高通股份有限公司 | Digitally assisted regulation for an integrated capless low-dropout (LDO) voltage regulator |
-
1994
- 1994-05-12 CN CN 94212007 patent/CN2207597Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102591388A (en) * | 2011-11-04 | 2012-07-18 | 中国科学院紫金山天文台 | Direct current bias source for superconductor detector |
| CN102591388B (en) * | 2011-11-04 | 2015-12-16 | 中国科学院紫金山天文台 | Direct current bias source for superconductor detector |
| CN104023920A (en) * | 2011-12-30 | 2014-09-03 | 英特尔公司 | Ultra-capacitor based energy storage for appliances |
| CN103499990A (en) * | 2012-10-11 | 2014-01-08 | 成都芯源系统有限公司 | Voltage stabilizer, system and method for digitally correcting voltage stabilizer |
| CN103499990B (en) * | 2012-10-11 | 2016-01-13 | 成都芯源系统有限公司 | Voltage stabilizer, system and method for digitally correcting voltage stabilizer |
| CN105190465A (en) * | 2013-03-15 | 2015-12-23 | 高通股份有限公司 | Digitally assisted regulation for an integrated capless low-dropout (LDO) voltage regulator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |