CN202652064U - Power supply device about extra-wide voltage range resistor voltage-drop power supply circuit - Google Patents
Power supply device about extra-wide voltage range resistor voltage-drop power supply circuit Download PDFInfo
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- CN202652064U CN202652064U CN2012201637920U CN201220163792U CN202652064U CN 202652064 U CN202652064 U CN 202652064U CN 2012201637920 U CN2012201637920 U CN 2012201637920U CN 201220163792 U CN201220163792 U CN 201220163792U CN 202652064 U CN202652064 U CN 202652064U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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Abstract
The utility model relates to the technical field of circuit voltage drop, in particular to a power supply device about an extra-wide voltage range resistor voltage-drop power supply circuit. The power supply device comprises a shell, a field effect transistor, a boost circuit, an integrated circuit IC, a logic control circuit, an operational amplifier, a triode, a diode, a resistor and a capacitor element, wherein the conduction of a high voltage pipe Q1 is always controlled by the logic circuit, and when the power supply voltage is up to the preset voltage, the capacitor C1 is continuously charged by the resistor R1, and the power supply voltage is slightly higher than the preset voltage, the field effect transistor Q2 is controlled by the operational amplifier to discharge the surplus electric quantity, the power supply voltage is kept constant, and the logic circuit switches off the triode Q1 by accounting the output of the operational amplifier if the high electric level time is longer, thus the resistor R1 and the resistor R2 are connected in series to supply the power. Compared with the existing resistor voltage drop circuit, the resistor voltage drop system is controllable, and the power supply switch is realized by the resistor voltage drop and inner voltage-stabilization control circuit, so as to solve the heating problem of the power supply resistor during the using process, and while in use, the device is safe and reliable, compact, easy to carry, low in cost, low in stand-by power consumption, green and environmentally friendly.
Description
[technical field]
The utility model relates to circuit pressure drop technical field, specifically a kind of electric supply installation that utilizes resistance to realize pressure drop.
[background technology]
Electronic control system is arranged in the fields such as small household appliances at present substantially, and system control panel generally needs 5V or 3.3V power supply, this power supply then will derive from the alternating current of 110V or 220V.Just need this moment a kind of circuit of design to realize the power supply circuits of step-down, mode one: resistance step-down, the power supply circuits of control system are often sampled simply, the mode of resistance step-down reliable and with low cost is powered, use in some portable products such as curler, heater of hair straightener etc., but when need to can be general in the AC system of the AC system of 110V (comprising 100V and 120V) and 220V (comprising 230V and 240V), the drawback of common resistance step-down has just showed, the caloric value of taking resistance in the system of 220V in 110V in the enough electric power system of power supply will be very large, and just often can electricity shortage when taking 110V in the system of 220V normal operation; The system of most of resistance step-downs can't realize green standby, and namely stand-by power consumption is less than 0.5W.
Another power supply circuits commonly used then is the scheme that adopts the high-voltage capacitance step-down, this can well solve the problem of supplying resistance heating, power supply capacity is stronger, but capacitance decompression also has its drawback: the volume such as electric capacity is large, has increased many difficulty to Machine Design; Cost is high; More difficult by the EMC test, i.e. size (EMI) and antijamming capability (EMS) are disturbed in Comprehensive Assessment aspect electromagnetic field.In electric fast-pulse group (IEC 61000 4-4) test and thunderbolt (IEC 61000 4-5) test, because the equivalent resistance of electric capacity in high frequency can diminish, so the interference of high frequency is more prone to enter the system power supply circuit of 5V, make system more difficult by test.
In general small household appliances system, calculate to exchange the 240V input, this moment, the power consumption of R1 was approximately 0.66W, and did not all change during in work or at standby mode, and the power supply capacity of whole system also only has 3mA, and this Functional Capability has seemed that some is not much of that in the time of in working order.And will stand-by power consumption be reduced in the 0.5W, then resistance R 1 is greater than 57.6K, if select resistance 68K commonly used, then the power supply capacity of this moment has then only had 1.76mA, system has been difficult to work, use if this circuit is placed on the system of 100V, then power supply capacity has only had 0.74mA, and General System just can't have been worked at all.
[summary of the invention]
The purpose of this utility model is to solve supplying resistance heating and the large technical problem of power consumption, and a kind of supply unit of low in energy consumption, reliability is high, volume is little resistance drop power supply circuits is provided.
For achieving the above object, design a kind of supply unit of relevant super wide voltage scope resistance step-down power supply circuit, comprise housing, field effect transistor, booster circuit, integrated circuit (IC), logic control circuit, operational amplifier, triode, diode and resistance and capacity cell, it is characterized in that being provided with in the housing power-supplying circuit wiring board, the anodal positive pole that connects AC power of rectifier diode D1 on the wiring board, rectifier diode D1 negative pole series resistance R1 and R2 and R4 one end, between resistance R 2 to R4, be provided with tap and connect capacitor C 2 and ground connection, tap one end connects capacitor C 1 and ground connection, tap one end connects booster circuit PUMP one end, tap one end contact resistance R3 one end, tap one end connecting triode Q1 collector electrode between resistance R 1 and R2, the Q1 base stage connects the field effect transistor Q3D utmost point, the field effect transistor G utmost point is connected end and is connected booster circuit PUMP one end with the S utmost point, the field effect transistor G utmost point other end connects logic control circuit LOGIC one end, resistance R 3 other end series resistance R5, and the b of tap one end concatenation operation amplifier UIB end, resistance R 4 other ends connect voltage stabilizing didoe D2 negative pole, and a of tap one end concatenation operation amplifier UIB end, the S utmost point and the ground connection of the anodal contact resistance R5 other end of D2 and field effect transistor Q2, the c end of the G utmost point concatenation operation amplifier UIB of Q2, and tap one end connects logic control circuit LOGIC one end, the D utmost point connecting triode Q1 emitter of Q2.
The integrated circuit (IC) acquiescence is with high pressure triode Q1 conducting during energising, this moment, high-voltage capacitance C1 under larger electric current can be charged gradually, system then enters operating state after system power supply voltage is higher than the LOGIC resetting voltage, before circuit supply voltage VCC does not reach setting voltage 3.3V, operational amplifier U1B is output as low always, logical circuit also can be controlled high-voltage tube Q1 conducting always, system power supply voltage then continues to rise, after system power supply reaches setting voltage, at the positive half cycle of alternating current, power capacitor C1 can be continued charging by resistance R 1, this moment, supply power voltage then can be slightly higher than setting voltage, then operational amplifier then can be controlled field effect transistor Q2 unnecessary electric weight is bled off, and keeps the stable of supply power voltage.
Described resistance R 1 is the little dropping resistor of a resistance value ratio resistance R 2, and resistance can be selected 10K Ω-50K Ω as required.
Described resistance R 2 is the large dropping resistors of a resistance value ratio resistance R 1, and resistance can be chosen in 100K Ω-1M Ω as required.
Described resistance R 4 and D2 series connection consist of internal reference voltage.
Described resistance R 3 and R5 series connection consist of dividing potential drop detection system supply power voltage.
Described booster circuit PUMP can substitute with resistance R 6, and resistance R 6 is 1M.
Power supply is 110V or 220V or 100-240V.
Compare with existing resistance reduction voltage circuit, the utility model is realized the controllable resistor depressurizing system, use resistance step-down and inner controlling circuit of voltage regulation to realize the power supply conversion, solved the problem that supplying resistance generates heat in use, and safety when using, reliable, volume is little portable, low-cost, low in energy consumption during standby, environmental protection.
[description of drawings]
Fig. 1 is the utility model electrical schematic diagram one;
Fig. 2 is the utility model electrical schematic diagram two;
1. rectifier diode D1,2. resistance R, 1 3. resistance R, 2 4. capacitor C, 2 5. capacitor C, 1 6. triode Q1,7. field effect transistor Q3,8. booster circuit PUMP, 9. logic control circuit LOGIC, 10. operational amplifier UIB, 11. field effect transistor Q2,12. resistance R, 3 13. resistance R, 4 14. resistance R, 5 15. voltage stabilizing didoe D2,16. AC power among the figure.
[embodiment]
By reference to the accompanying drawings the utility model is further elaborated, its internal structure can realize the technical staff of this professional domain.
Decompression principle of the present utility model is to utilize small one and large one two resistance series connection of resistance, and the mode step-down of a triode in parallel power supply by the switch triode, consists of large resistive short on the large resistance of resistance, strengthens power supply capacity.
Circuit region in the utility model housing on the power-supplying circuit wiring board is divided into integrated circuit (Fig. 1 dotted line frame) and outer other components and parts of integrated circuit are connected the circuit that consists of with components and parts in the integrated circuit, its concrete structure as shown in Figure 1:
The anodal positive pole that connects AC power of rectifier diode D1 on the power-supplying circuit wiring board, rectifier diode D1 negative pole series resistance R1 and R2 and R4 one end, between resistance R 2 to R4, be provided with tap and connect capacitor C 2 and ground connection, tap one end connects capacitor C 1 and ground connection, tap one end connects booster circuit PUMP one end, tap one end contact resistance R3 one end, tap one end connecting triode Q1 collector electrode between resistance R 1 and R2, the Q1 base stage connects the D utmost point of field effect transistor Q3, the G utmost point of field effect transistor Q3 is connected end and is connected booster circuit PUMP one end with the S utmost point, the G utmost point other end of Q3 connects logic control circuit LOGIC one end, resistance R 3 other end series resistance R5, and 2 ends of tap one end concatenation operation amplifier UIB, resistance R 4 other ends connect voltage stabilizing didoe D2 negative pole, 1 end of tap one end concatenation operation amplifier UIB between resistance R 4 and voltage stabilizing didoe D2, the S utmost point of the anodal contact resistance R5 other end of D2 and field effect transistor Q2.Wherein said triode Q1, field effect transistor Q2, field effect transistor Q3, booster circuit PUMP, logic control circuit LOGIC, operational amplifier UIB, voltage stabilizing didoe D2, resistance R 3, R4 and R5 all are arranged on the integrated circuit (IC).
As shown in Figure 2, this device circuit can be done following adjustment, and the effect that both reach is equal to.Remove the wire that tap links to each other between booster circuit PUMP and two ends thereof and Q3 and resistance R 2 and the R4 at circuit base shown in Figure 1, tap one end contact resistance R6 one end between rectifier diode D1 and resistance R 1, resistance R 6 other ends connect the G utmost point and the S utmost point of field effect transistor Q3, and resistance R 6 resistances are 1M.
The effect of this device components and parts:
Rectifier diode D1 allows the interchange positive voltage pass through, and stops negative voltage to pass through;
Resistance R 4 and voltage stabilizing didoe D2 series connection constituent apparatus internal reference voltage source;
Resistance R 3 and R5 series connection consist of dividing potential drop detection system supply power voltage;
Operational amplifier U1B judges whether supply power voltage is higher than design voltage value;
Field effect transistor Q2, when supply power voltage was higher than design voltage, then conducting Q2 fell the tele-release on the capacitor C 1, thus the keeping system power supply is stable;
Triode Q1 is used for short-circuit resistance R2, can be placed on IC interior, also can be placed on the integrated circuit outside;
The switch of field effect transistor Q3 control triode Q1;
Booster circuit PUMP produces a voltage that is higher than supply power voltage, is used for opening triode Q1;
Logic control circuit LOGIC in conjunction with zero-crossing of alternating current information, opens or closes triode Q1 according to quantity, the Width-integrals computational load current conditions of operational amplifier UIB output high level in the alternating current zero passage.
Operation principle:
Can select 110V or 220V or 100-240V AC power, namely product both can be inserted on the power supply of 100V and use, and also can directly be inserted on the power supply of 240V to use.
During the device energising, logic control circuit LOGIC acquiescence triode Q1 conducting, this moment, capacitor C 1 under larger electric current was charged gradually, after system power supply voltage is higher than logic control circuit LOGIC resetting voltage, system enters operating state, before supply power voltage did not reach setting voltage 3.3V, operational amplifier U1B was output as low always, and logical circuit is controlled triode Q1 conducting always;
System power supply voltage continues to rise, after system power supply reaches setting voltage, capacitor C 1 can be continued charging by resistance R 1, this moment, supply power voltage was slightly higher than setting voltage, operational amplifier control field effect transistor Q2 bleeds off unnecessary electric weight, keep the stable of supply power voltage, logical circuit is by the output of statistical calculation amplifier, if high level time is many, then illustrative system does not need so large supply current now, close triode Q1 at ensuing several ac cycles, use resistance R 1 and R2 series-fed, if operational amplifier output low level always represents that then power supply is under-supply, open triode Q1 at next ac cycle, using 1 power supply of less resistance R.
When system closedown or standby mode, integrated circuit (IC) is turned off external devices and more inner no components and parts, reduce system power dissipation, close triode Q1, system enters holding state fully, power consumption is less than 0.5W in the time of can satisfying the 240V standby, and maximum supply current is not less than 3mA during simultaneously 100V power supply, and Fig. 1 Circuits System system power dissipation when 240V exchanges input can be as small as 0.28W after tested.
Claims (7)
1. the supply unit of a relevant super wide voltage scope resistance step-down power supply circuit, comprise housing, field effect transistor, booster circuit, logic control circuit, operational amplifier, triode, diode and resistance and capacity cell, it is characterized in that being provided with in the housing power-supplying circuit wiring board, the anodal positive pole that connects AC power of rectifier diode D1 on the wiring board, rectifier diode D1 negative pole series resistance R1 and R2 and R4 one end, between resistance R 2 to R4, be provided with tap and connect capacitor C 2 and ground connection, tap one end connects capacitor C 1 and ground connection, tap one end connects booster circuit PUMP one end, tap one end contact resistance R3 one end, tap one end connecting triode Q1 collector electrode between resistance R 1 and R2, the Q1 base stage connects the D utmost point of field effect transistor Q3, the G utmost point of Q3 is connected end and is connected booster circuit PUMP one end with the S utmost point, the G utmost point other end of Q3 connects logic control circuit LOGIC one end, resistance R 3 other end series resistance R5, and the b of tap one end concatenation operation amplifier UIB end, resistance R 4 other ends connect voltage stabilizing didoe D2 negative pole, and a of tap one end concatenation operation amplifier UIB end, the S utmost point and the ground connection of the anodal contact resistance R5 other end of D2 and field effect transistor Q2, the c end of the G utmost point concatenation operation amplifier UIB of Q2, and tap one end connects logic control circuit LOGIC one end, the D utmost point connecting triode Q1 emitter of Q2.
2. the supply unit of a kind of relevant super wide voltage scope resistance step-down power supply circuit as claimed in claim 1 is characterized in that resistance R 1 is a dropping resistor that resistance value ratio R2 is little, and resistance can be selected 10K Ω-50K Ω as required.
3. the supply unit of a kind of relevant super wide voltage scope resistance step-down power supply circuit as claimed in claim 1 is characterized in that resistance R 2 is the dropping resistors that resistance value ratio R1 is large, and resistance can be chosen in 100K Ω-1M Ω as required.
4. the supply unit of a kind of relevant super wide voltage scope resistance step-down power supply circuit as claimed in claim 1 is characterized in that resistance R 4 and D2 series connection consists of internal reference voltage.
5. the supply unit of a kind of relevant super wide voltage scope resistance step-down power supply circuit as claimed in claim 1 is characterized in that resistance R 3 and R5 series connection consists of dividing potential drop detection system supply voltage.
6. the supply unit of a kind of relevant super wide voltage scope resistance step-down power supply circuit as claimed in claim 1 is characterized in that booster circuit PUMP can substitute with resistance R 6, and resistance R 6 is 1M.
7. the supply unit of a kind of relevant super wide voltage scope resistance step-down power supply circuit as claimed in claim 1 is characterized in that power supply is 110V or 220V or 100V-240V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201637920U CN202652064U (en) | 2012-04-17 | 2012-04-17 | Power supply device about extra-wide voltage range resistor voltage-drop power supply circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201637920U CN202652064U (en) | 2012-04-17 | 2012-04-17 | Power supply device about extra-wide voltage range resistor voltage-drop power supply circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202652064U true CN202652064U (en) | 2013-01-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201637920U Expired - Fee Related CN202652064U (en) | 2012-04-17 | 2012-04-17 | Power supply device about extra-wide voltage range resistor voltage-drop power supply circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202652064U (en) |
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2012
- 2012-04-17 CN CN2012201637920U patent/CN202652064U/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 |
Granted publication date: 20130102 Termination date: 20180417 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |