CN207218341U - Quick-charging circuit based on base chip when 555 - Google Patents
Quick-charging circuit based on base chip when 555 Download PDFInfo
- Publication number
- CN207218341U CN207218341U CN201720944465.1U CN201720944465U CN207218341U CN 207218341 U CN207218341 U CN 207218341U CN 201720944465 U CN201720944465 U CN 201720944465U CN 207218341 U CN207218341 U CN 207218341U
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- China
- Prior art keywords
- base chip
- charging
- quick
- resistance
- pin
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Abstract
The utility model discloses a kind of quick-charging circuit based on base chip when 555, including base chip U1 when transformer T1, rectifier circuit VD1 and 555, live wire, the zero line of external civil power are distinguished in two ends of the transformer T1 primary sides, boost battery charge can be given, and when charging is complete, charging being automatically stopped, light emitting diode extinguishes, it is simple in construction, easily realize, low manufacture cost, and add radiator fan, ensure normal operation circuit, have a good application prospect.
Description
Technical field
It the utility model is related to electronic circuit technology field, and in particular to a kind of quick charge based on base chip when 555
Circuit.
Background technology
With the fast development of electronic product, battery needs quantity also more and more therewith.It is presently used for battery
The circuit of charging, circuit is complicated, and cost of manufacture is high, and is not provided with radiator fan, influences the effect of battery charging.
Utility model content
The purpose of this utility model is to overcome existing battery charging circuit, and circuit is complicated, and cost of manufacture is high, and does not have
Radiator fan is provided with, the problem of influenceing battery charging effect.Quick charge of the present utility model based on base chip when 555
Circuit, including base chip when transformer, rectifier circuit and 555, boost battery charge can be given, and when charging is complete,
Charging is automatically stopped, light emitting diode extinguishes, simple in construction, easily realizes, low manufacture cost, and adds radiator fan, protects
Normal operation circuit is demonstrate,proved, is had a good application prospect.
In order to achieve the above object, technical scheme is used by the utility model：
A kind of quick-charging circuit based on base chip when 555, it is characterised in that：Including transformer T1, rectifier circuit
Live wire, the zero line of external civil power, the change are distinguished in base chip U1 during VD1 and 555, two ends of the transformer T1 primary sides
The both ends of depressor T1 primary sides are connected with rectifier circuit VD1 positive and negative input respectively, the rectifier circuit VD1
Positive output end be connected respectively with base chip U1 the 4th and the 8th pin, resistance R1 one end when 555, the resistance R1's
The other end is connected with base chip U1 the 5th pin, voltage-regulator diode VS1 negative pole when 555 respectively, the voltage-regulator diode
VS1 positive pole is connected with rectifier circuit VD1 negative output terminal, and the negative output terminal of the rectifier circuit VD1 is connected to the ground
Connect, base chip U1 the first pin is connected to the ground when described 555, when described 555 base chip U1 the 3rd pin respectively with cunning
Dynamic resistor RP1 one end, resistance R2 one end is connected, the other end of the resistance R2 and light emitting diode D1 positive pole phase
Connection, the negative pole of the light emitting diode D1 are connected to the ground, and the other end and diode D2 of the slide resistor RP1 are just
Pole is connected, the diode D2 negative poles one end with slide resistor RP2, resistance R3 one end, battery to be charged respectively
G1 positive pole is connected, and the other end of the slide resistor RP2 is connected to the ground by resistance R4, and the resistance R3's is another
End is connected with slide resistor RP3 one end, and the other end of the slide resistor RP3 is connected to the ground, described to be charged
Battery G1 negative pole is connected to the ground, the adjustable side of the slide resistor RP2 and the 6th pin phase of base chip U1 when 555
Connection, the adjustable side of the slide resistor RP3 are connected with the second pin of base chip U1 when 555, the rectifier circuit
VD1 positive and negative output end is parallel with radiator fan M1, the radiator fan M1 face rectifier circuits VD1.
The foregoing quick-charging circuit based on base chip when 555, it is characterised in that：The rectifier circuit VD1 just,
Also simultaneously syncranium filter capacitor C1 between negative output terminal.
The foregoing quick-charging circuit based on base chip when 555, it is characterised in that：The one of the transformer T1 primary sides
Individual end is in series with fuse F1, switch S1.
The foregoing quick-charging circuit based on base chip when 555, it is characterised in that：The rectifier circuit VD1 just,
Voltage between negative output terminal is 9V.
The foregoing quick-charging circuit based on base chip when 555, it is characterised in that：The light emitting diode D1 is green
Light emitting diode.
The foregoing quick-charging circuit based on base chip when 555, it is characterised in that：The battery G1's to be charged fills
Piezoelectric voltage is 5V charging voltages.
The beneficial effects of the utility model are：Quick-charging circuit of the present utility model based on base chip when 555, including
Base chip when transformer, rectifier circuit and 555, boost battery charge can be given, and when charging is complete, be automatically stopped and fill
Electricity, light emitting diode extinguishes, simple in construction, easily realizes, low manufacture cost, and adds radiator fan, ensures that circuit is normal
Operation, has a good application prospect.
Brief description of the drawings
Fig. 1 is the circuit diagram of the present utility model based on the quick-charging circuit of base chip when 555.
Embodiment
Below in conjunction with Figure of description, the utility model is further described.
As shown in figure 1, the quick-charging circuit of the present utility model based on base chip when 555, including transformer T1, rectification
Live wire, the zero line of external civil power are distinguished in base chip U1 during bridge circuit VD1 and 555, two ends of the transformer T1 primary sides,
The both ends of the transformer T1 primary sides are connected with rectifier circuit VD1 positive and negative input respectively, the rectifier bridge electricity
Road VD1 positive output end is connected with base chip U1 the 4th and the 8th pin, resistance R1 one end when 555 respectively, the electricity
The resistance R1 other end is connected with base chip U1 the 5th pin, voltage-regulator diode VS1 negative pole when 555 respectively, the voltage stabilizing
Diode VS1 positive pole is connected with rectifier circuit VD1 negative output terminal, the negative output terminal of the rectifier circuit VD1 with
Ground is connected, and base chip U1 the first pin is connected to the ground when described 555, base chip U1 the 3rd pin point when described 555
One end, resistance R2 one end not with slide resistor RP1 are connected, and the other end of the resistance R2 is with light emitting diode D1's
Positive pole is connected, and the negative pole of the light emitting diode D1 is connected to the ground, the other end and diode of the slide resistor RP1
D2 positive pole is connected, the diode D2 negative poles one end with slide resistor RP2, resistance R3 one end, to be charged respectively
Battery G1 positive pole is connected, and the other end of the slide resistor RP2 is connected to the ground by resistance R4, the resistance R3
The other end be connected with slide resistor RP3 one end, the other end of the slide resistor RP3 is connected to the ground, described
Battery G1 to be charged negative pole is connected to the ground, the adjustable side of the slide resistor RP2 and the 6th of base chip U1 when 555
Pin is connected, and the adjustable side of the slide resistor RP3 is connected with the second pin of base chip U1 when 555, the rectification
Bridge circuit VD1 positive and negative output end is parallel with radiator fan M1, the radiator fan M1 face rectifier circuits VD1.
Preferably, also simultaneously syncranium filter capacitor C1 between the positive and negative output end of the rectifier circuit VD1, can ensure
The stability of power supply output.
Preferably, an end of the transformer T1 primary sides be in series with fuse F1, switch S1, fuse F1 can be
When electric current is excessive, blow automatically, place and burnt out based on other components when 555 inside the quick-charging circuit of base chip, prolonged
Long life.
Preferably, the voltage between the positive and negative output end of the rectifier circuit VD1 is 9V, disclosure satisfy that 5V charging electricity
The needs of pressure,
Preferably, the light emitting diode D1 is green LED, is lighted automatically in charging, after charging,
Automatic distinguishing, to remind user.
Preferably, the charging voltage of the battery G1 to be charged is 5V charging voltages.
Quick-charging circuit of the present utility model based on base chip when 555, operation principle are as follows：Become by adjusting to slide
The lower voltage limit of device RP3 setting charging voltages is hindered, the upper voltage limit of charging voltage is set by adjusting slide rheostat RP2,
When treating charging accumulator G1 charging, base chip U1 the 3rd pin output high level passes through slide rheostat RP1 when 555,
Diode D2 treats charging accumulator G1 charging.Light emitting diode D1 is normally lighted simultaneously；When filling for battery G1 to be charged
After the completion of electricity, base chip U1 the 6th pin is high level when 555, and base chip U1 resets when 555, the of base chip U1 when 555
Three pins export low level, and charging stops, while light emitting diode D1 extinguishes, and by adjusting whole slide rheostat RP1, realize and adjust
Save the effect of charging current, control charging current is in 50mA or so, after diode D2 is in order to prevent from stopping charging, battery to
There is anti-sink current in base chip U1 direction when 555.
In summary, the quick-charging circuit of the present utility model based on base chip when 555, including transformer, rectifier bridge
Circuit and base chip when 555, can give boost battery charge, and when charging is complete, be automatically stopped charging, light emitting diode
Extinguish, it is simple in construction, easily realize, low manufacture cost, and radiator fan is added, ensure normal operation circuit, have good
Application prospect.
General principle of the present utility model, main features and advantages have been shown and described above.The technical staff of the industry
It should be appreciated that the utility model is not restricted to the described embodiments, the simply explanation described in above-described embodiment and specification is originally
The principle of utility model, on the premise of the spirit and scope of the utility model is not departed from, the utility model also has various change
And improvement, these changes and improvements are both fallen within claimed the scope of the utility model.The utility model requires protection scope
By appended claims and its equivalent thereof.
Claims (6)
1. the quick-charging circuit based on base chip when 555, it is characterised in that：Including transformer T1, rectifier circuit VD1 and
Live wire, the zero line of external civil power, the transformer are distinguished in base chip U1 when 555, two ends of the transformer T1 primary sides
The both ends of T1 primary sides are connected with rectifier circuit VD1 positive and negative input respectively, and the rectifier circuit VD1 is just
Output end is connected with base chip U1 the 4th and the 8th pin, resistance R1 one end when 555 respectively, and the resistance R1's is another
End is connected with base chip U1 the 5th pin, voltage-regulator diode VS1 negative pole when 555 respectively, the voltage-regulator diode VS1's
Positive pole is connected with rectifier circuit VD1 negative output terminal, and the negative output terminal of the rectifier circuit VD1 is connected to the ground, institute
Base chip U1 the first pin is connected to the ground when stating 555, when described 555 base chip U1 the 3rd pin respectively with swept resistance
Device RP1 one end, resistance R2 one end is connected, and the other end of the resistance R2 is connected with light emitting diode D1 positive pole,
The negative pole of the light emitting diode D1 is connected to the ground, the other end of the slide resistor RP1 and diode D2 positive pole phase
Connection, the diode D2 negative poles one end with slide resistor RP2, resistance R3 one end, battery G1 to be charged respectively
Positive pole is connected, and the other end of the slide resistor RP2 is connected to the ground by resistance R4, the other end of the resistance R3 with
Slide resistor RP3 one end is connected, and the other end of the slide resistor RP3 is connected to the ground, the electric power storage to be charged
Pond G1 negative pole is connected to the ground, and the adjustable side of the slide resistor RP2 is connected with the 6th pin of base chip U1 when 555
Connect, the adjustable side of the slide resistor RP3 is connected with the second pin of base chip U1 when 555, the rectifier circuit VD1
Positive and negative output end be parallel with radiator fan M1, the radiator fan M1 face rectifier circuits VD1.
2. the quick-charging circuit according to claim 1 based on base chip when 555, it is characterised in that：The rectifier bridge
Also simultaneously syncranium filter capacitor C1 between circuit VD1 positive and negative output end.
3. the quick-charging circuit according to claim 1 based on base chip when 555, it is characterised in that：The transformer
One end of T1 primary sides is in series with fuse F1, switch S1.
4. the quick-charging circuit according to claim 1 based on base chip when 555, it is characterised in that：The rectifier bridge
Voltage between circuit VD1 positive and negative output end is 9V.
5. the quick-charging circuit according to claim 1 based on base chip when 555, it is characterised in that：Described luminous two
Pole pipe D1 is green LED.
6. the quick-charging circuit according to claim 1 based on base chip when 555, it is characterised in that：It is described to be charged
Battery G1 charging voltage is 5V charging voltages.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720944465.1U CN207218341U (en) | 2017-07-31 | 2017-07-31 | Quick-charging circuit based on base chip when 555 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720944465.1U CN207218341U (en) | 2017-07-31 | 2017-07-31 | Quick-charging circuit based on base chip when 555 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207218341U true CN207218341U (en) | 2018-04-10 |
Family
ID=61815039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720944465.1U Expired - Fee Related CN207218341U (en) | 2017-07-31 | 2017-07-31 | Quick-charging circuit based on base chip when 555 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207218341U (en) |
-
2017
- 2017-07-31 CN CN201720944465.1U patent/CN207218341U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180410 Termination date: 20180731 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |