CN1674422A - Pulse wide modulation converting to DC voltage unit - Google Patents
Pulse wide modulation converting to DC voltage unit Download PDFInfo
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- CN1674422A CN1674422A CNA2004100297828A CN200410029782A CN1674422A CN 1674422 A CN1674422 A CN 1674422A CN A2004100297828 A CNA2004100297828 A CN A2004100297828A CN 200410029782 A CN200410029782 A CN 200410029782A CN 1674422 A CN1674422 A CN 1674422A
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- voltage stabilizing
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Abstract
The present invention discloses a unit capable of converting PWM into DC voltage. It includes at least the following components: a switching portion, a driving portion, a first voltage-stabilizing portion, a bridging portion, a second voltage-stabilizing portion and an accumulator component. Said invention also provides the actions of the above-mentioned every component, and also provides the modes of all the above-mentioned components.
Description
Technical field
The present invention relates to a kind of pulse-width modulation and convert the direct voltage unit to, by the work period of adjusting pulse-width signal, come the size and the change degree thereof of control output voltage, when being provided at practical application, the voltage that various different loads are required is to increase the convenience that uses.
Background technology
Various devices or assembly are when start, no matter it is to produce the signal source or as load, all need bestow electric power and can make it bring into play due effect; But, the required voltage of aforementioned means or assembly but often differs from one another, please refer to a kind of known techniques shown in Figure 1, when a pulse-width signal (PWM) during in the work period (Duty Cycle), via resistance R electric power storage part C is charged, and be in inoperative during the cycle at pulse-width signal, electric power storage part C discharge into pulse-width signal become Hi (being the work period) begin again the charging; Therefore, the output voltage of this known techniques integral body is roughly fixed.
Yet when practical application, aforementioned techniques often can't provide various voltage according to need.
Summary of the invention
Main purpose of the present invention provides a kind of PWM and converts the direct voltage unit to, can come the size of control output voltage by the work period of adjusting pulse-width signal, with the required current potential of realistic application, can increase ease of use.
Another object of the present invention provides a kind of change degree that can come conversion according to need or adjust described output voltage.
PWM of the present invention converts the direct voltage unit to and comprises at least: a switch portion produces conducting (ON), not conducting (OFF) effect; One drive division connects this switch portion, produces ON or OFF effect to order about described switch portion; One first voltage stabilizing portion connects described switch portion, produces a voltage; One bridge part connects the described first voltage stabilizing portion, so that the aforementioned first voltage stabilizing portion keeps one-way transmission; One second voltage stabilizing portion connects this bridge part, produces a voltage; One electric power storage part connects this second voltage stabilizing portion, can charge and discharge the described first voltage stabilizing portion, the second voltage stabilizing portion the electric power that transmitted.
The present invention is described in detail with instantiation below in conjunction with accompanying drawing, so that further understand other advantage of the present invention, purpose, technical characterictic and effect.
Description of drawings
Fig. 1 is known circuit diagram;
Fig. 2 is the circuit box schematic diagram of a preferred embodiment of the present invention;
Fig. 3 is the circuit diagram of the preferred embodiment of Fig. 2;
Fig. 4 is the first preferable possible embodiments schematic diagram of Fig. 3;
Fig. 5 is the second preferable possible embodiments schematic diagram of Fig. 3;
Fig. 6 is the 3rd preferable possible embodiments schematic diagram of Fig. 3;
Fig. 7 is the 4th preferable possible embodiments schematic diagram of Fig. 3;
Fig. 8 is the 5th preferable possible embodiments schematic diagram of Fig. 3;
Fig. 9 is the 6th preferable possible embodiments schematic diagram of Fig. 3;
Figure 10 is the 7th preferable possible embodiments schematic diagram of Fig. 3;
Figure 11 is the 8th preferable possible embodiments schematic diagram of Fig. 3;
Figure 12 is the 9th preferable possible embodiments schematic diagram of Fig. 3;
Figure 13 is that the present invention adjusts one of the work period of pulse-width signal and rate of change schematic diagram of output voltage;
Figure 14 is two of the present invention's rate of change schematic diagram of adjusting work period of pulse-width signal and output voltage.
Description of reference numerals: 1PWM converts the direct voltage unit to; 10 switch portion; 11 first switching members; 12 second switch members; 13 resistance; 20 drive divisions; 21 first resistance; 22 second resistance; 23 the 3rd resistance; 30 first voltage stabilizing portions; 31,32 divider resistances; 33 Zener diodes; 40 second voltage stabilizing portions; 41,42 divider resistances; 43 Zener diodes; C electric power storage part; The D bridge part.
Embodiment
See also shown in Figure 2, PWM of the present invention converts direct voltage unit 1 to and comprises at least: a switch portion 10, can produce conducting (ON), the effect of not conducting (OFF), and described switch portion 10 can be made of one first switching member 11, or this first switching member 11 also more is connected with a second switch member 12 (please refer to Fig. 3), in a feasible embodiment, aforementioned first switching member 11, second switch member 12 can be transistor (Transistor), field-effect transistor (FET), described first switching member 11, whether second switch member 12 also can be other can produce the equivalent elements of opening (ON) or closing (OFF) effect according to the triggering of signal (as pulse-width signal), for example: TRAIC, SCR (Silicon ControlledRectifier) etc.; (for example: described first switching member 11 adopts transistors if the structure that above-mentioned second switch member 12 connects first switching member 11 is considered the antiphase of this switching member input of output of employed switching member, from the output of the collection utmost point, then aforementioned transistorized collection utmost point phase place will be opposite with base stage by this transistorized base stage input for signal); In addition, between described first switching member 11, second switch member 12, can be connected with a resistance 13, with the flow through magnitude of current of switching member of minimizing, also be a kind of feasible pattern.
One drive division 20, connect this switch portion 10, produce ON or OFF effect to order about described switch portion 10, in a feasible embodiment, aforementioned drive division 20 can interconnect (please refer to Fig. 3) by one first resistance 21, one second resistance 22, one the 3rd resistance 23, or described the 3rd resistance 23 is replaced by Zener diode (not being shown among the figure), by the dividing potential drop effect of the 3rd resistance 23 or Zener diode, impel described switch portion 10 to produce ON or OFF to export a drive signal; That is a pulse-width signal (PWM) can be transferred to described switch portion 10 via this second resistance 22.
One first voltage stabilizing portion 30 connects described switch portion 10, and this first voltage stabilizing portion 30 can be that resistance is connected in series with resistance or resistance is connected in series (please refer to Fig. 4 to Figure 12, describe in detail after a while) with Zener diode (Zener Diode); One bridge part D connects the described first voltage stabilizing portion 30, so that the aforementioned first voltage stabilizing portion 30 keeps one-way transmission, this bridge part D can be diode; One second voltage stabilizing portion 40 connects this bridge part D, and this second voltage stabilizing portion 40 can be that resistance is connected in series with resistance or resistance is connected in series (please refer to Fig. 4 to Figure 12, describe in detail after a while) with Zener diode (Zener Diode); One electric power storage part C connects this second voltage stabilizing portion 40, can charge and discharge the electric power that the described first voltage stabilizing portion 30, the second voltage stabilizing portion 40 are transmitted, and electric power storage part C can be electric capacity.
A kind of feasible start step or the flow process of the invention described above are as follows:
At first in a step 1, when a pulse-width signal (PWM) enters via this second resistance 22, and when pulse-width signal (PWM) is in the work period (Duty Cycle), make described switch portion 10 conductings (ON), cause the described first voltage stabilizing portion 30 can't produce dividing potential drop effect (because the voltage convergence 0 of divider resistance or Zener diode, its combination form describes in detail after a while); In step 2, owing to the first voltage stabilizing portion 30 can't produce the dividing potential drop effect and this bridge part D do not bestowed forward bias voltage drop, so that not conducting of this bridge part D (OFF); In step 3, the second voltage stabilizing portion 40 produces dividing potential drop effect (explanation after a while), and voltage output (being the output that PWM of the present invention converts direct voltage unit 1 to) is provided, and can this electric power storage part C be charged; In step 4, (PWM) is in inoperative during the cycle when pulse-width signal, make described switch portion 10 not conductings (OFF), cause the aforementioned first voltage stabilizing portion 30 to form dividing potential drop effect (produce voltage at divider resistance or Zener diode, its combination form describes in detail after a while); In step 5, because these first voltage stabilizing portion, 30 formed dividing potential drops produce above-mentioned bridge part D the forward bias voltage drop effect is arranged, and make this bridge part D conducting (ON); In step 6, PWM of the present invention converts the partial pressure potential (explanation after a while) that the output (that is voltage of this electric power storage part C) of direct voltage unit 1 is provided for the first voltage stabilizing portion 30 to.
Please refer to Fig. 4 to Figure 12, the above-mentioned first voltage stabilizing portion 30, the second voltage stabilizing portion 40 can be that resistance is connected in series with resistance or resistance is connected in series with Zener diode (Zener Diode), produce the output voltage that PWM of the present invention converts direct voltage unit 1 to, in feasible embodiment, following pattern arranged roughly:
1. the first voltage stabilizing portion 30, the second voltage stabilizing portion 40 are all resistance and are connected in series (please refer to Fig. 4) with resistance; That is the first voltage stabilizing portion 30 is that divider resistance 31 connects divider resistance 32, and with the effect of formation dividing potential drop, and the second voltage stabilizing portion 40 is divider resistance 41 connection divider resistances 42, forms the dividing potential drop effect; Therefore, divider resistance 32, divider resistance 42 can produce partial pressure potential.
2. please refer to Fig. 5, the first voltage stabilizing portion 30 is that resistance is connected in series with resistance, is connected in series with Zener diode (Zener Diode) and the second voltage stabilizing portion 40 is a resistance; That is the first voltage stabilizing portion 30 is that divider resistance 31 connects divider resistance 32, and with the effect of formation dividing potential drop, and the second voltage stabilizing portion 40 is divider resistance 41 connection Zener diodes 43, forms the dividing potential drop effect; Therefore, divider resistance 32, Zener diode 43 can produce partial pressure potential.
3. please refer to Fig. 6, with preceding paragraph (the 2nd) pattern or act on roughly the same; But, the Zener diode 43 of the second voltage stabilizing portion 40 and divider resistance 41 be connected in series the position reciprocity.
4. please refer to Fig. 7, the first voltage stabilizing portion 30 is that resistance is connected in series with Zener diode (Zener Diode), is connected in series with resistance and the second voltage stabilizing portion 40 is a resistance; That is the first voltage stabilizing portion 30 is that divider resistance 31 connects Zener diode 33, and with the effect of formation dividing potential drop, and the second voltage stabilizing portion 40 is divider resistance 41 connection divider resistances 42, forms the dividing potential drop effect; Therefore, Zener diode 33, divider resistance 42 can produce partial pressure potential.
5. please refer to Fig. 8, the first voltage stabilizing portion 30, the second voltage stabilizing portion 40 are all resistance and are connected in series with Zener diode (Zener Diode); That is the first voltage stabilizing portion 30 is that divider resistance 31 connects Zener diode 33, and with the effect of formation dividing potential drop, and the second voltage stabilizing portion 40 is divider resistance 41 connection Zener diodes 43, forms the dividing potential drop effect; Therefore, Zener diode 33, Zener diode 43 can produce partial pressure potential.
6. please refer to Fig. 9, with preceding paragraph (the 5th) pattern or act on roughly the same; But, the Zener diode 43 of the second voltage stabilizing portion 40 and divider resistance 41 be connected in series the position reciprocity.
7. please refer to Figure 10, with the 4th pattern or act on roughly the same; But, the Zener diode 33 of the first voltage stabilizing portion 30 and divider resistance 31 be connected in series the position reciprocity.
8. please refer to Figure 11, with the 5th pattern or act on roughly the same; But, the Zener diode 33 of the first voltage stabilizing portion 30 and divider resistance 31 be connected in series the position reciprocity.
9. please refer to Figure 12, with the 6th pattern or act on roughly the same; But, the Zener diode 33 of the first voltage stabilizing portion 30 and divider resistance 31 be connected in series the position reciprocity (also with the 8th pattern or act on roughly the same; But, the Zener diode 43 of the second voltage stabilizing portion 40 and divider resistance 41 be connected in series the position reciprocity).
In sum, when pulse-width signal is in the work period,, voltage output can be provided, and electric power storage part C is charged because the second voltage stabilizing portion 40 produces dividing potential drop effect (producing voltage at divider resistance or Zener diode); Be in inoperative during the cycle at pulse-width signal, because the first voltage stabilizing portion 30 forms dividing potential drop effect (producing voltage at divider resistance or Zener diode) and above-mentioned bridge part D generation is had forward bias voltage drop, and make this bridge part D conducting (ON), and export by the dividing potential drop that the first voltage stabilizing portion 30 is produced; But, the voltage output that this pulse-width signal is in the inoperative cycle than its when the work period little, therefore, by size or the length of work period of the described pulse-width signal of control and utilize the charging of aforementioned electric power storage part C, can adjust the voltage swing of output.
In addition, and can be by changing the described first voltage stabilizing portion 30, the resistance value of the second voltage stabilizing portion 40 or the magnitude of voltage of Zener diode (Zener Diode), so that the work period of aforementioned this pulse-width signal of control is adjusted the rate of change of output voltage is more obvious or acutely (please refer to Figure 13, the slope high person of healing represents that the rate of change of adjusting output voltage by the work period of pulse-width signal is also bigger in graphic), also be a kind of feasible pattern; In addition, if as the antiphase of this switching member input of output of the switching member of above-mentioned use, then adjusting the rate of change of output voltage by the work period of pulse-width signal can be as shown in figure 14.
The above is preferred embodiment of the present invention only, is not to be used for limiting the present invention, therefore the change of doing according to conception of the present invention; in not breaking away from the present invention's spirit scope,, modify and use for various variations; the equivalent action that is produced all should be contained in protection scope of the present invention.
Claims (14)
1, a kind of PWM converts the direct voltage unit to, comprises at least: a switch portion produces conducting (ON), not conducting (OFF) effect; One drive division connects this switch portion, produces ON or OFF effect to order about described switch portion; One first voltage stabilizing portion connects described switch portion, produces a voltage; One bridge part connects the described first voltage stabilizing portion, so that the aforementioned first voltage stabilizing portion keeps one-way transmission; One second voltage stabilizing portion connects this bridge part, produces a voltage; One electric power storage part connects this second voltage stabilizing portion, can charge and discharge the described first voltage stabilizing portion, the second voltage stabilizing portion the electric power that transmitted.
2, convert the direct voltage unit to according to the described PWM of claim 1, wherein switch portion has at least one switching member.
3, convert the direct voltage unit to according to the described PWM of claim 2, wherein switching member has two at least.
4, convert the direct voltage unit to according to claim 2 or 3 described PWM, wherein switching member is a transistor.
5, convert the direct voltage unit to according to claim 2 or 3 described PWM, wherein switching member is a field-effect transistor.
6, convert the direct voltage unit to according to claim 2 or 3 described PWM, wherein switching member is TRAIC.
7, convert the direct voltage unit to according to claim 2 or 3 described PWM, wherein switching member is SCR.
8, convert the direct voltage unit to according to the described PWM of claim 1, wherein bridge part is a diode.
9, convert the direct voltage unit to according to the described PWM of claim 1, wherein the first voltage stabilizing portion is resistance and resistance string.
10, convert the direct voltage unit to according to the described PWM of claim 1, wherein the first voltage stabilizing portion is that resistance is connected in series with Zener diode (Zener Diode).
11, convert the direct voltage unit to according to the described PWM of claim 1, wherein the second voltage stabilizing portion is that resistance is connected in series with resistance.
12, convert the direct voltage unit to according to the described PWM of claim 1, wherein the second voltage stabilizing portion is that resistance is connected in series with Zener diode (Zener Diode).
13, convert the direct voltage unit to according to the described PWM of claim 1, wherein the electric power storage part is an electric capacity.
14, convert the direct voltage unit to according to the described PWM of claim 3, wherein switching member interconnects, and is connected with a resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100297828A CN100426641C (en) | 2004-03-26 | 2004-03-26 | Pulse wide modulation converting to DC voltage unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100297828A CN100426641C (en) | 2004-03-26 | 2004-03-26 | Pulse wide modulation converting to DC voltage unit |
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| Publication Number | Publication Date |
|---|---|
| CN1674422A true CN1674422A (en) | 2005-09-28 |
| CN100426641C CN100426641C (en) | 2008-10-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100297828A Expired - Fee Related CN100426641C (en) | 2004-03-26 | 2004-03-26 | Pulse wide modulation converting to DC voltage unit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104300873A (en) * | 2013-07-16 | 2015-01-21 | 台达电子（东莞）有限公司 | Motor rotating speed control device, method and system |
| CN109274369A (en) * | 2018-08-29 | 2019-01-25 | 苏州瑞迈斯医疗科技有限公司 | A kind of scintillation pulse method for digitizing and device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07142178A (en) * | 1993-11-22 | 1995-06-02 | Sony Corp | Lamp driving circuit |
| US5610803A (en) * | 1994-10-17 | 1997-03-11 | International Business Machines Corporation | Pulse width modulated power supply that reduces overshoot |
| IT1318238B1 (en) * | 2000-07-25 | 2003-07-28 | St Microelectronics Srl | SELF-LIFT CIRCUIT IN DC / DC STATIC CONVERTERS. |
-
2004
- 2004-03-26 CN CNB2004100297828A patent/CN100426641C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104300873A (en) * | 2013-07-16 | 2015-01-21 | 台达电子（东莞）有限公司 | Motor rotating speed control device, method and system |
| CN109274369A (en) * | 2018-08-29 | 2019-01-25 | 苏州瑞迈斯医疗科技有限公司 | A kind of scintillation pulse method for digitizing and device |
| CN109274369B (en) * | 2018-08-29 | 2022-05-10 | 苏州瑞迈斯医疗科技有限公司 | Method and device for digitizing scintillation pulse |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100426641C (en) | 2008-10-15 |
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Granted publication date: 20081015 Termination date: 20170326 |