CN202841080U - Pulse reference generating device - Google Patents
Pulse reference generating device Download PDFInfo
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- CN202841080U CN202841080U CN 201220489756 CN201220489756U CN202841080U CN 202841080 U CN202841080 U CN 202841080U CN 201220489756 CN201220489756 CN 201220489756 CN 201220489756 U CN201220489756 U CN 201220489756U CN 202841080 U CN202841080 U CN 202841080U
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- resistance
- pulsation
- generating means
- comparator
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Abstract
The utility model relates to a pulse reference generating device. The pulse reference generating device comprises a comparator, and is characterized in that the output end of the comparator is connected with one end of a first resistor, one end of a second resistor and a positive electrode end of a diode; the negative input end of the comparator is connected with one end of a capacitor and the negative electrode end of the diode; the positive input end of the comparator is connected with a reference voltage; the other end of the second resistor is grounded; the other end of the capacitor is grounded; the other end of the first resistor serves as the input end of the pulse reference generating device; and the output end of the comparator serves as the output end of the pulse reference generating device. By using the pulse reference generating device, stable processing can be carried out on the inputted instable pulse signals, such that the outputted pulse reference signals can achieve a substantially stable state.
Description
Technical field
The utility model relates to a kind of pulsation benchmark generating means, the pulsation benchmark generating means that especially a kind of output ripple is stable.
Background technology
The direction of voltage and current is temporal evolution not, but big or small time dependent electric current is called pulsating direct current.At present, along with electron trade, the especially fast development of power supply industry, unsettled fluctuating signal originally more and more can not satisfy the requirement of the more and more higher various device of precision and system.For this reason, in the urgent need to a kind of device that the steady pulsation signal can be provided, in order to a pulsation reference signal to be provided, be applied in various equipment and the system.
Summary of the invention
In view of this, the purpose of this utility model provides a kind of pulsation benchmark generating means, can export highly stable pulsation reference signal.
The utility model adopts following scheme to realize: a kind of pulsation benchmark generating means, comprise a comparator, it is characterized in that: the output of described comparator connects an end of one first resistance, an end of one second resistance and the positive terminal of a diode, the negative input end of described comparator connects an end of an electric capacity and the negative pole end of described diode, and the positive input terminal of described comparator connects a reference voltage; The other end ground connection of described the second resistance; The other end ground connection of described electric capacity; The other end of described the first resistance is as the input of described pulsation benchmark generating means; The output of described comparator is as the output of described pulsation benchmark generating means.
In the utility model one embodiment, described comparator and reference voltage are replaced with NPN type triode equivalence; The collector electrode of described NPN type triode connects the positive terminal of described diode, the base stage of described NPN type triode connects the negative pole end of described diode, the grounded emitter of described NPN type triode, the base-emitter pressure drop of described NPN type triode is as described reference voltage.
In the utility model one embodiment, also comprise one the 3rd resistance; One end of described the 3rd resistance connects the base stage of described NPN type triode, and the other end of described the 3rd resistance connects an end of described electric capacity.
In the utility model one embodiment, also comprise one the 4th resistance; One end of described the 4th resistance connects the positive terminal of described diode, and the other end of described the 4th resistance connects the negative pole end of described diode.
In the utility model one embodiment, described reference voltage is to be produced or produced by other reference voltage generating circuits by a voltage stabilizing didoe.
The utility model has the advantage of: during a unsettled fluctuating signal of input, this pulsation benchmark generating means can provide a stable pulsation reference signal.Use more extensive.
Description of drawings
Fig. 1 is a kind of pulsation benchmark of the utility model generating means schematic diagram.
Fig. 2 is a kind of pulsation benchmark of the utility model generating means one embodiment schematic diagram.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, below will by specific embodiment and relevant drawings, the utility model be described in further detail.
The present embodiment provides a kind of pulsation benchmark generating means, comprise a comparator, it is characterized in that: the output of described comparator connects an end of one first resistance, an end of one second resistance and the positive terminal of a diode, the negative input end of described comparator connects an end of an electric capacity and the negative pole end of described diode, and the positive input terminal of described comparator connects a reference voltage; The other end ground connection of described the second resistance; The other end ground connection of described electric capacity; The other end of described the first resistance is as the input of described pulsation benchmark generating means; The output of described comparator is as the output of described pulsation benchmark generating means.
As shown in Figure 1, Fig. 1 is a kind of pulsation benchmark of the utility model generating means schematic diagram.Please refer to Fig. 1, the present embodiment provides a kind of pulsation benchmark generating means, comprise a comparator, it is characterized in that: the output of described comparator connects an end of one first resistance R 1, an end of one second resistance R 2 and the positive terminal of a diode D, the negative input end of described comparator connects an end of a capacitor C and the negative pole end of described diode D, the positive input terminal of described comparator connects a reference voltage, and the voltage stabilizing value of described reference voltage is 0.7V; The other end ground connection of described the second resistance R 2; The other end ground connection of described capacitor C; The other end of described the first resistance R 1 is as the input of described pulsation benchmark generating means; The output of described comparator is as the output of described pulsation benchmark generating means.
As shown in Figure 2, Fig. 2 is a kind of pulsation benchmark of the utility model generating means one embodiment schematic diagram.Please refer to Fig. 2, the present embodiment provides a kind of pulsation benchmark generating means, comprise a NPN type triode Q, it is characterized in that: the collector electrode of described NPN type triode Q connects an end of an end of one first resistance R 1, one second resistance R 2, an end of one the 4th resistance R 4 and the positive terminal of a diode D, the base stage of described NPN type triode Q connects an end of one the 3rd resistance R 3, the grounded emitter of described NPN type triode Q; The other end of described the 3rd resistance R 3 connects the other end of an end of a capacitor C, described the 4th resistance R 4 and the negative pole end of described diode D; The other end ground connection of described the second resistance R 2; The other end ground connection of described capacitor C; The other end of described the first resistance R 1 is as the input of described pulsation benchmark generating means; The collector electrode of described NPN type triode Q is as the output of described pulsation benchmark generating means.
Please refer to Fig. 2, the specific works principle of this embodiment is:
Unsettled fluctuating signal is by the input Vin input of described pulsation benchmark generating means, this unsettled fluctuating signal through the first resistance R 1 after by a filter network that is formed by diode D1 and capacitor C, provide voltage through the 3rd resistance R 3 for the base stage of NPN type triode Q again, NPN type triode Q conducting because voltage (this voltage surpasses base-emitter threshold voltage 0.7V) is arranged base stage, owing to making the resistance between its collector electrode-emitter (C-E), the conducting of NPN type triode Q reduces, resistance between this C-E and the corresponding reduction of resistance after the second resistance R 2 is in parallel make output end voltage (Vout) stable.And, as required, can adjust the resistance of the first resistance R 1 and the second resistance R 2, the stable voltage of control output.
Above-listed preferred embodiment; the purpose of this utility model, technical scheme and advantage are further described; institute is understood that; the above only is preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., all should be included within the protection range of the present utility model.
Claims (5)
1. pulsation benchmark generating means, comprise a comparator, it is characterized in that: the output of described comparator connects an end of one first resistance, an end of one second resistance and the positive terminal of a diode, the negative input end of described comparator connects an end of an electric capacity and the negative pole end of described diode, and the positive input terminal of described comparator connects a reference voltage; The other end ground connection of described the second resistance; The other end ground connection of described electric capacity; The other end of described the first resistance is as the input of described pulsation benchmark generating means; The output of described comparator is as the output of described pulsation benchmark generating means.
2. pulsation benchmark generating means according to claim 1 is characterized in that: described comparator and reference voltage are replaced with NPN type triode equivalence; The collector electrode of described NPN type triode connects the positive terminal of described diode, the base stage of described NPN type triode connects the negative pole end of described diode, the grounded emitter of described NPN type triode, the base-emitter pressure drop of described NPN type triode is as described reference voltage.
3. pulsation benchmark generating means according to claim 2 is characterized in that: also comprise one the 3rd resistance; One end of described the 3rd resistance connects the base stage of described NPN type triode, and the other end of described the 3rd resistance connects an end of described electric capacity.
4. pulsation benchmark generating means according to claim 2 is characterized in that: also comprise one the 4th resistance; One end of described the 4th resistance connects the positive terminal of described diode, and the other end of described the 4th resistance connects the negative pole end of described diode.
5. pulsation benchmark generating means according to claim 1 is characterized in that: described reference voltage is to be produced or produced by other reference voltage generating circuits by a voltage stabilizing didoe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220489756 CN202841080U (en) | 2012-09-25 | 2012-09-25 | Pulse reference generating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220489756 CN202841080U (en) | 2012-09-25 | 2012-09-25 | Pulse reference generating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202841080U true CN202841080U (en) | 2013-03-27 |
Family
ID=47952674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220489756 Expired - Fee Related CN202841080U (en) | 2012-09-25 | 2012-09-25 | Pulse reference generating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202841080U (en) |
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2012
- 2012-09-25 CN CN 201220489756 patent/CN202841080U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130327 Termination date: 20160925 |