CN100362723C - Control circuit for eliminating bounce signal production - Google Patents
Control circuit for eliminating bounce signal production Download PDFInfo
- Publication number
- CN100362723C CN100362723C CNB2003101122474A CN200310112247A CN100362723C CN 100362723 C CN100362723 C CN 100362723C CN B2003101122474 A CNB2003101122474 A CN B2003101122474A CN 200310112247 A CN200310112247 A CN 200310112247A CN 100362723 C CN100362723 C CN 100362723C
- Authority
- CN
- China
- Prior art keywords
- control circuit
- battery
- charge
- spring signal
- input
- 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
Links
Images
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The present invention relates to a control circuit for eliminating bounce signals. A charging and discharging circuit and a flip-flop are arranged in the control circuit. The control circuit for eliminating bounce signals controls the electric potential of the time pulse input end in the flip-flop by the charge and the discharge of the charging and discharging circuit in the process that batteries are inserted into or pulled from electronic products so as to supply stable voltage to the electronic products and completely eliminate the condition of unstable power source caused by the bounce signals.
Description
Technical field
The invention relates to a kind of control circuit, and particularly relevant for a kind of control circuit of eliminating the generation of spring signal.
Background technology
Along with making rapid progress of science and technology, every electronic product is more and more universal, simultaneously because people are no matter all can use electronic product when work or leisure, therefore every electronic product is invariably towards light, thin, short, little development, and can allow the user use whenever and wherever possible, so every portable electronic product big city matching battery uses with convenient.And the user is changing in the cell process for electronic product, pulls away moment when battery inserts moment or works as battery, can produce so-called spring signal, causes the power supply instability, if deal with improperly, promptly causes the situation of system's shakiness to take place easily.
Fig. 1 illustrates the power supply connection diagram of traditional a kind of electronic product, shows among the figure that this electronic product comprises: battery connector 10, electronic product internal circuit 20.Wherein, battery connector 10 is in order to connect battery (not illustrating), to transmit the power supply that battery is supplied with.Electronic product internal circuit 20 then receives the power supply that battery connector 10 is transmitted.
Please refer to Fig. 2, it illustrates and is the conditional electronic product plug spring signal waveform figure that battery produced.Wherein, by waveform acquisition point E as can be known, the time point a that inserts 10 moments of battery connector at battery begins to produce the spring signal, causes the system of electronic product to come into operation, and the still unsettled situation of power supply.During with time point b that battery connector 10 engages fully, the spring signal just finishes up to battery, and electronic product internal circuit 20 is just obtained the supply of burning voltage.
In addition, by waveform acquisition point E as can be known, when battery pulls away the time point c of 10 moments of battery connector, begin to produce the spring signal, cause power supply instability in the time of to close electronic product, cause the situation of electronic product shakiness to take place easily, when time point d that battery and battery connector 10 break away from fully, the signal that bounces just finishes.
Comprehensive the above, the shortcoming when known portable electronic product is changed battery is:
(1) inserts 10 moments of battery connector at battery, can produce the spring signal, cause electronic product to come into operation, but the power supply instability causes the situation of electronic product shakiness to take place easily.
(2) pull away 10 moments of battery connector at battery, can produce the spring signal, cause power supply instability in the time of to close electronic product, cause the situation of electronic product shakiness to take place easily.
Summary of the invention
Therefore, the present invention proposes a kind of control circuit that the spring signal produces of eliminating, this control circuit inserts or pulls away in the process of battery in electronic product, see through the charge and discharge of charge-discharge circuit, current potential with control trigger internal clock pulse input end, make electronic product obtain the supply of burning voltage, get rid of fully because of the spring signal causes the unsettled situation of power supply and take place.
For reaching above-mentioned purpose with other, the present invention proposes a kind of control circuit that the spring signal produces of eliminating, and this circuit comprises: charge-discharge circuit and trigger.The input of above-mentioned charge-discharge circuit is coupled to battery connector, in order to begin charging when battery engages fully with battery connector, discharges when battery pulls away battery connector fully.Above-mentioned trigger has clock pulse input terminal, removing end, data terminal, default end and output, wherein default end all is coupled to voltage source with data terminal, be coupled to battery connector and remove end, clock pulse input terminal then is coupled to the output of charge-discharge circuit.
Wherein, battery connector is connected with battery, in order to transmit the power supply that battery is supplied with.
Wherein, charge-discharge circuit more comprises resistance and electric capacity, in order to store and to discharge electric charge.
In addition, default end is supplied with by the backup battery of electronic product inside with the voltage source that data terminal couples.
Description of drawings
For above and other objects of the present invention, feature and advantage can be become apparent, a preferred embodiment cited below particularly, and conjunction with figs. are described in detail below:
Fig. 1 illustrates the power supply connection diagram of conditional electronic product;
Fig. 2 illustrates the conditional electronic product plug spring signal waveform figure that battery produced;
Fig. 3 illustrates a kind of control circuit figure that eliminates the generation of spring signal of a preferred embodiment of the present invention;
Fig. 4 illustrates a kind of control circuit oscillogram of eliminating the generation of spring signal of a preferred embodiment of the present invention; And
Fig. 5 illustrates a kind of trigger mark sheet of eliminating the control circuit of spring signal generation of a preferred embodiment of the present invention.
Embodiment
Fig. 3 illustrates and is a kind of control circuit figure that eliminates the generation of spring signal according to a preferred embodiment of the present invention.This control circuit comprises: the input 401 of charge-discharge circuit 40 is coupled to battery connector 30, in order to voltage when input store charge to be arranged at input 401, and disengages electric charge when input 401 no-voltages are imported.Then trigger 50 has four inputs and two outputs, wherein default end all is coupled to voltage source with data terminal, be coupled to battery connector 30 and remove end, clock pulse input terminal then is coupled to the output 403 of charge-discharge circuit 40, the data of 50 two outputs of trigger output complement code each other then in addition, as be familiar with this skill person as can be known, wherein trigger 50 can be D flip-flop, but not as limit.
Wherein, battery connector 30 is connected with battery (not illustrating), in order to transmit the power supply that battery is supplied with.And default end is supplied with by the backup battery of electronic product inside with the voltage source that data terminal couples.
Wherein, charge-discharge circuit 40 more comprises resistance 402 and electric capacity 404, in order to store and to discharge electric charge, with the current potential of clock pulse input terminal in the control trigger 50, as is familiar with this skill person as can be known, and wherein resistance 402 can be 100K Ω, but not as limit; As be familiar with this skill person as can be known, wherein electric capacity 404 can be 0.1 μ F, but not as limit.
Please refer to Fig. 3,4,5, so that further specify the operation principle of this control circuit.Wherein Fig. 4,5 illustrates a kind of of the embodiment of the invention respectively and eliminates the control circuit oscillogram that the spring signal produces, and a kind of control circuit mark sheet of eliminating the generation of spring signal of the embodiment of the invention.
Wherein, by waveform acquisition point A as can be known, produced the spring signal when battery inserts the time point a of 30 moments of battery connector, during with time point b that battery connector 30 engages fully, the signal that bounces just finishes up to battery.Time point a to time point b during this period of time in, because bounce frequency is very fast, the charging interval that can't satisfy charge-discharge circuit 40, so time point a to time point b during this period of time in, waveform acquisition point B place can not produce voltage, so clock pulse input terminal is an electronegative potential.In addition, the removing end of trigger 50 is because of being coupled to battery connector 30, so current potential is the same with waveform acquisition point A, cause time point a to time point b during this period of time in, a waveform acquisition point C place is an electronegative potential, it is high potential that waveform captures a D place.
When battery engages fully with battery connector 30, do not had the spring signal at a waveform acquisition A place and produced, so waveform acquisition point A remains on high potential, the stable voltage of battery connector 30 transmission.And charge-discharge circuit 40 begins charging, produces a rising edge at waveform acquisition point B place, makes trigger 50 clock pulse input terminals produce a rising clock pulse.Because of the removing end of trigger 50, default end, data terminal are all high potential, so transfer high potential at waveform acquisition point C place, waveform acquisition point D place transfers electronegative potential to simultaneously.
By waveform acquisition point A as can be known, produced the spring signal when battery pulls away the time point c of 30 moments of battery connector, when time point d that battery and battery connector 30 break away from fully, the signal that bounces just finishes.Yet when waveform acquisition point A place takes place to bounce signal for the first time, removing end moment of trigger 50 is reduced to electronegative potential, so no matter waveform acquisition point B place is high potential or electronegative potential, waveform acquisition point C place all can be reduced to electronegative potential immediately, waveform acquisition point D place is then for changeing high potential, so the waveform that is produced by waveform acquisition point C place as can be known, it can be got rid of fully because of bounce and causes the unsettled phenomenon of power supply.
When battery and battery connector 30 break away from fully, charge-discharge circuit 40 begins discharge, form a drop edge at waveform acquisition point B place, the clock pulse input terminal of trigger 50 is then reduced to electronegative potential by high potential, but can the current potential at waveform acquisition point C place and waveform acquisition point D place not had any impact.
Comprehensive the above, the control circuit that elimination spring signal of the present invention produces has following advantage:
(1) as applied waveforms acquisition point C or waveform acquisition point D during as the switching of control battery power switch, because of the only ability transition when the time point b that battery and battery connector engage fully of waveform acquisition point C or the waveform acquisition point controlling signal that D produced, and transition immediately when battery and power connector one breaks away from, cause the unsettled situation of power supply so can get rid of fully because of the signal that bounces.
(2) can avoid causing the fault of electronic product system because of the spring signal that the plug battery produces.
Though the present invention discloses as above with a preferred embodiment; right its is not in order to limit the present invention; anyly be familiar with this operator; without departing from the spirit and scope of the present invention; when can doing a little change and retouching, so the scope of the present invention is as the criterion when looking the accompanying Claim book person of defining.
Claims (6)
1. eliminate the control circuit that the spring signal produces for one kind, the spring signal that is produced when plugging a battery in order to eliminate is characterized in that the control circuit that this elimination spring signal produces comprises:
One charge-discharge circuit has an input and an output, and described input receives the power supply that a battery connector is transmitted, and at this input voltage when input store charge is arranged, and disengages electric charge when this input no-voltage input; And
One trigger, have a clock pulse input, and remove end, a data terminal, a default end and an a plurality of output, should all be coupled to a voltage source with this data terminal by default end, this removing end is coupled to this battery connector, and this clock pulse input terminal then is coupled to this output of this charge-discharge circuit.
2. eliminate the control circuit that the spring signal produces according to claim 1, it is characterized in that: this charge-discharge circuit also comprises resistance and an electric capacity.
3. the control circuit that produces as elimination spring signal as described in the claim 2, it is characterized in that: this resistance is 100K Ω.
4. the control circuit that produces as elimination spring signal as described in the claim 2, it is characterized in that: this electric capacity is 0.1 μ F.
5. eliminate the control circuit that the spring signal produces according to claim 1, it is characterized in that: this trigger is a D flip-flop.
6. eliminate the control circuit that the spring signal produces according to claim 1, it is characterized in that: this voltage source is supplied with by backup battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101122474A CN100362723C (en) | 2003-11-24 | 2003-11-24 | Control circuit for eliminating bounce signal production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101122474A CN100362723C (en) | 2003-11-24 | 2003-11-24 | Control circuit for eliminating bounce signal production |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1622417A CN1622417A (en) | 2005-06-01 |
| CN100362723C true CN100362723C (en) | 2008-01-16 |
Family
ID=34759658
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2003101122474A Expired - Fee Related CN100362723C (en) | 2003-11-24 | 2003-11-24 | Control circuit for eliminating bounce signal production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100362723C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103138721B (en) * | 2011-11-29 | 2016-01-20 | 英业达股份有限公司 | Except bouncer and method thereof |
| US9331686B2 (en) * | 2014-06-05 | 2016-05-03 | Realtek Semiconductor Corp. | Method and apparatus for reducing power bouncing of integrated circuits |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2152720Y (en) * | 1993-03-05 | 1994-01-12 | 李荣恭 | Anti-theft device for car and motorcycle |
| EP0599372A1 (en) * | 1992-11-18 | 1994-06-01 | Koninklijke Philips Electronics N.V. | PLL with stable phase discriminator |
| CN2242536Y (en) * | 1995-02-21 | 1996-12-11 | 邗江电子设备厂 | Based primary power supply for program control exchanger |
| CN2574300Y (en) * | 2002-04-26 | 2003-09-17 | 神达电脑股份有限公司 | Protection circuit unit for power supply system |
-
2003
- 2003-11-24 CN CNB2003101122474A patent/CN100362723C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0599372A1 (en) * | 1992-11-18 | 1994-06-01 | Koninklijke Philips Electronics N.V. | PLL with stable phase discriminator |
| CN2152720Y (en) * | 1993-03-05 | 1994-01-12 | 李荣恭 | Anti-theft device for car and motorcycle |
| CN2242536Y (en) * | 1995-02-21 | 1996-12-11 | 邗江电子设备厂 | Based primary power supply for program control exchanger |
| CN2574300Y (en) * | 2002-04-26 | 2003-09-17 | 神达电脑股份有限公司 | Protection circuit unit for power supply system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1622417A (en) | 2005-06-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112327696B (en) | Key control circuit | |
| CN109327044A (en) | Circuit for power conversion, inverter circuit, photovoltaic generating system and its control method | |
| CN104953650A (en) | Battery electric quantity display device | |
| CN100362723C (en) | Control circuit for eliminating bounce signal production | |
| CN103067824A (en) | Audio frequency amplifier eliminating starting noise | |
| CN104917982A (en) | Standby circuit and television set with same | |
| CN101123354A (en) | Charging control system for lithium battery | |
| CN201004620Y (en) | An interlock circuit with delay function | |
| CN200947595Y (en) | Key-press circuit for switch | |
| CN202026081U (en) | Antispark circuit | |
| CN204795336U (en) | Stand -by circuit and have TV set of this circuit | |
| CN204732936U (en) | A kind of portable power source | |
| CN204180037U (en) | Reset control circuit and electronic equipment | |
| CN104935842A (en) | Standby circuit, control method and television system of standby circuit | |
| CN102195271A (en) | Device for reducing starting current of electronic equipment | |
| CN210297298U (en) | Adapter simultaneously supporting type-c analog earphone and quick charging | |
| CN106648012A (en) | Toggle control switch circuit | |
| CN101715261A (en) | Status switching circuit of LED controller | |
| CN220208213U (en) | Compatible control circuit based on single button | |
| CN211606505U (en) | Reset circuit | |
| CN204761070U (en) | Battery power display device | |
| CN217363166U (en) | Control circuit and shooting equipment | |
| CN221177548U (en) | Control circuit for delay starting circuit | |
| CN109831195A (en) | Key control circuit and mobile terminal | |
| CN221408470U (en) | Reset circuit and charger |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20080116 Termination date: 20151124 |