CN202405841U - Frequency conversion type charger - Google Patents
Frequency conversion type charger Download PDFInfo
- Publication number
- CN202405841U CN202405841U CN2011205263664U CN201120526366U CN202405841U CN 202405841 U CN202405841 U CN 202405841U CN 2011205263664 U CN2011205263664 U CN 2011205263664U CN 201120526366 U CN201120526366 U CN 201120526366U CN 202405841 U CN202405841 U CN 202405841U
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- circuit
- frequency conversion
- capacitor
- diode
- conversion type
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Abstract
The utility model relates to a frequency conversion type charger. The frequency conversion type charger comprises a fan power supply and negative peak absorption circuit, a 220V rectification filter circuit, an oscillation field effect tube driving circuit, an overheat protection circuit and a frequency conversion circuit. The frequency conversion type charger is characterized in that the fan power supply and negative peak absorption circuit consists of a capacitor E2, a diode D9, a transformer T1 and a fan; the 220V rectification filter circuit consists of diodes D5, D6, D7 and D8 and a capacitor E1; the oscillation field effect tube driving circuit consists of an integrated circuit KA3843, resistors R1, R2, R3, R5, R9, R12, R13 and R14, capacitors C3, C4, C5, C6, C7, C8 and C9, a field effect tube Q1, and diodes D1, D2 and D4; the overheat protection circuit consists of the integrated circuit KA3843, resistors R3 and R11, and a capacitor C6; the frequency conversion circuit consists of resistors R1 and R7, capacitors C4, C8 and C9, a diode D1, a voltage stabilizing tube D4 and the transformer T1; and the integrated circuit KA3843 consists of the transformer T1, resistors R6 and R15, a diode D3 and a capacitor C2. By the frequency conversion type charger, the defect that a switching power supply charger cannot charge when a storage battery is completely lack of power is effectively overcome. Regardless of the type of the storage battery, the frequency conversion type charger can well adapt to the state of the storage battery, and the overheat protection circuit is low in cost and high in reliability.
Description
Technical field
The utility model relates to charger, relates to a kind of frequency conversion type charger.
Background technology
Existing charger is two kinds of Industrial Frequency Transformer and energy-saving Switching Power Supply chargers, the shortcoming of Industrial Frequency Transformer charger, (1) heaviness; Charging voltage is unstable, receives the variation of line voltage and changes; (2) power consumption is big, at the bottom of the efficient; (3) production cost is high.Energy-saving Switching Power Supply charger prior art shortcoming, the storage battery of (1) 12V, battery voltage is lower than 6V does not charge, and storage battery is chosen in (2), and the storage battery that has (3) frequency of can not charging is constant; Different conditions to storage battery can not effectively adapt to.
Summary of the invention
The utility model purpose is to overcome the prior art deficiency and a kind of frequency conversion type charger is provided; For realizing above-mentioned purpose; The utility model has adopted following technical scheme: a kind of frequency conversion type charger; Comprise that the blower fan power supply negative peak of holding concurrently absorbs circuit, 220V current rectifying and wave filtering circuit, concussion FET drive circuit, overheating protection circuit, frequency changer circuit, is characterized in that: the blower fan power supply negative peak of holding concurrently absorbs circuit and is made up of electric capacity E2, diode D9, transformer T1 and blower fan; The 220V current rectifying and wave filtering circuit is made up of diode D5, D6, D7, D8, electric capacity E1; Concussion FET drive circuit is by integrated circuit KA3843, and resistance R 1, R2, R3, R5, R9, R12, R13, R14, capacitor C 3, C4, C5, C6, C7, C8, C9, FET Q1, diode D1, D2, D4 form; Overheating protection circuit is made up of integrated circuit KA3843, resistance R 3, R11, capacitor C 6; Frequency changer circuit is made up of resistance R 1, R7, capacitor C 4, C8, C9, diode D1, voltage-stabiliser tube D4, transformer T1; Integrated circuit KA3843 is by transformer T1, resistance R 6, and R15, diode D3, capacitor C 2 is formed.
This utility model efficiently solves the defective that the Switching Power Supply charger can not charge when the complete power shortage of storage battery.Do not choose storage battery, what state of storage battery can both well adapted, is low-cost highly reliable overheating protection circuit.
Description of drawings:
Fig. 1 is the utility model structural representation
Embodiment:
A kind of frequency conversion type charger; Comprise that the blower fan power supply negative peak of holding concurrently absorbs circuit, 220V current rectifying and wave filtering circuit, concussion FET drive circuit, overheating protection circuit, frequency changer circuit, is characterized in that: the blower fan power supply negative peak of holding concurrently absorbs circuit and is made up of electric capacity E2, diode D9, transformer T1 and blower fan; The 220V current rectifying and wave filtering circuit is made up of diode D5, D6, D7, D8, electric capacity E1; Concussion FET drive circuit is by integrated circuit KA3843, and resistance R 1, R2, R3, R5, R9, R12, R13, R14, capacitor C 3, C4, C5, C6, C7, C8, C9, FET Q1, diode D1, D2, D4 form; Overheating protection circuit is made up of integrated circuit KA3843, resistance R 3, R11, capacitor C 6; Frequency changer circuit is made up of resistance R 1, R7, capacitor C 4, C8, C9, diode D1, voltage-stabiliser tube D4, transformer T1; Integrated circuit KA3843 is by transformer T1, resistance R 6, and R15, diode D3, capacitor C 2 is formed.
The electricity of 220V is through the bridge rectification, electric capacity E1 filtering.Be added to transformer to voltage.Give the KA3843 starting resistor through R14, KA3843 work, Driving Field effect plumber does.Make main output be stabilized in 15.5V and 30V through feedback control circuit control KA3843 again.In this process.If battery voltage is low excessively, the inverse peak voltage of charger transformer can and then reduce.Inverse peak voltage, is added on the concussion capacitor C 4 through R1 after the C9 filtering through the R7 current limliting.The concussion frequency reduces.Power output reduces.Other elements on the circuit have been protected.If (power does not reduce, because brownout, electric current is very big, the element of perishable charger.) along with the rising of battery voltage.The transformer negative peak raises gradually.The concussion frequency also and then raises.Power output strengthens.The saturated back of storage battery charging current diminishes gradually.Whole charging process is accomplished.If the charger temperature is too high, thermistor R3 diminishes, and the 2 pin voltages of KA3843 raise, and KA3843 closes output behind the thresholding.Protective circuit.
Inverse peak voltage is through the D9 rectification, and the power supply of E2 filtering fan has promptly solved the blower fan powerup issue, has absorbed inverse peak voltage again, makes the inverse peak voltage can be not too high.Effectively protected FET.
Claims (2)
1. frequency conversion type charger; Comprise that the blower fan power supply negative peak of holding concurrently absorbs circuit, 220V current rectifying and wave filtering circuit, concussion FET drive circuit, overheating protection circuit, frequency changer circuit, is characterized in that: the blower fan power supply negative peak of holding concurrently absorbs circuit and is made up of electric capacity E2, diode D9, transformer T1 and blower fan; The 220V current rectifying and wave filtering circuit is made up of diode D5, D6, D7, D8, electric capacity E1; Concussion FET drive circuit is by integrated circuit KA3843, and resistance R 1, R2, R3, R5, R9, R12, R13, R14, capacitor C 3, C4, C5, C6, C7, C8, C9, FET Q1, diode D1, D2, D4 form; Overheating protection circuit is made up of integrated circuit KA3843, resistance R 3, R11, capacitor C 6; Frequency changer circuit is made up of resistance R 1, R7, capacitor C 4, C8, C9, diode D1, voltage-stabiliser tube D4, transformer T1.
2. a kind of frequency conversion type charger according to claim 1 is characterized in that: integrated circuit KA3843 is by transformer T1, resistance R 6, and R15, diode D3, capacitor C 2 is formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205263664U CN202405841U (en) | 2011-12-16 | 2011-12-16 | Frequency conversion type charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205263664U CN202405841U (en) | 2011-12-16 | 2011-12-16 | Frequency conversion type charger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202405841U true CN202405841U (en) | 2012-08-29 |
Family
ID=46703458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205263664U Expired - Lifetime CN202405841U (en) | 2011-12-16 | 2011-12-16 | Frequency conversion type charger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202405841U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103023120A (en) * | 2012-12-13 | 2013-04-03 | 四川省电力公司内江电业局 | Charger circuit capable of removing noise |
-
2011
- 2011-12-16 CN CN2011205263664U patent/CN202405841U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103023120A (en) * | 2012-12-13 | 2013-04-03 | 四川省电力公司内江电业局 | Charger circuit capable of removing noise |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120829 |
|
| CX01 | Expiry of patent term |