CN201910653U - Charging circuit of RCC (ringing choke converter) switching power supply - Google Patents
Charging circuit of RCC (ringing choke converter) switching power supply Download PDFInfo
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- CN201910653U CN201910653U CN2011200157870U CN201120015787U CN201910653U CN 201910653 U CN201910653 U CN 201910653U CN 2011200157870 U CN2011200157870 U CN 2011200157870U CN 201120015787 U CN201120015787 U CN 201120015787U CN 201910653 U CN201910653 U CN 201910653U
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Abstract
The utility model relates to an RCC (ringing choke converter) switching power supply, in particular to a charging circuit of the RCC switching power supply with low idle power consumption. The utility model has a technical scheme that: a negative electrode of a voltage-stabilizing diode of a primary switching control unit of the RCC switching power supply is connected with an emitter of a current-stabilizing triode Q2 of a switching tube collector current-stabilizing unit; a diode D2 is connected between the emitter of the current-stabilizing triode Q2 and the ground; and a positive feedback oscillating circuit consisting of a capacitor C6 and a resistor R10 is connected between a secondary voltage-stabilizing filter unit of the RCC switching power supply and a voltage-sampling unit. The charging circuit has the beneficial effects that: 1, static working current of a primary circuit is reduced, and the idle power consumption of the circuit is reduced; 2, the consistency requirement of the circuit on a voltage clamping and voltage-stabilizing diode D3 of a switching tube base is reduced so as to be convenient for purchasing of devices; and 3, a secondary charging control part is used for controlling the working of a charging current triode to be in a saturated state, so that the devices have more reliability.
Description
Technical field
The utility model relates to the RCC Switching Power Supply, relates to a kind of RCC Switching Power Supply charging circuit of low unloaded power consumption especially.
Background technology
RCC formula Switching Power Supply, it is the inverse-excitation type self-excitation converter, simple with its circuit, with low cost, still has wide application space in low power power supply occasion, and at present the no-load power consumption of RCC Switching Power Supply even same design also can exceed the 1W of energy-conserving and environment-protective standard-required because of the device error causes having the no-load power consumption of more product, makes defect rate higher generally about 0.9W.
And the triode that the secondary charging control section branch of existing RCC Switching Power Supply charging circuit is used to control charging current is operated in magnifying state, and unsaturated state, excessive at power is to burn easily.
The utility model content
Deficiency at the prior art scheme, the utility model proposes a kind of RCC Switching Power Supply charging circuit of low unloaded power consumption, its no-load power consumption is about 0.7W, and the triode that its secondary charging control section branch is used to control charging current is operated in saturation condition, and device has more reliability.
The technical solution adopted in the utility model is as follows:
A kind of RCC Switching Power Supply charging circuit of low unloaded power consumption, it with present common design something in common is: the rectification filtering unit that is made of diode D1 and electrochemical capacitor C1, by a winding, the high frequency transformer that secondary winding and accessory power supply winding constitute, a winding of this transformer, switch triode Q1, connect two outputs of described rectification filtering unit after resistance R 4 series connection, the A end of the auxiliary winding of this transformer is by capacitor C 3, resistance R 2 connects the base stage of described switch triode Q1, B holds ground connection, the two ends of starting resistance R1 connect the base stage of the positive power source terminal and the switch triode Q1 of rectification filtering unit respectively, by diode D4, the switch control unit that electrochemical capacitor C2 and voltage stabilizing didoe D3 constitute, the positive pole of described diode D4, the positive pole of voltage stabilizing didoe D3, the negative pole of electrochemical capacitor C2 is parallel with one another, the plus earth of electrochemical capacitor C2, the negative pole of diode D4 connects the A end of the auxiliary winding of described transformer, the switching tube collector electrode current stabilization unit that constitutes by triode Q2 and resistance R 3, the collector electrode of this triode Q2 connects the base stage of described switch triode Q1, base stage connects the emitter of described switch triode Q1 by resistance R 3, this RCC Switching Power Supply charging circuit also comprises: the secondary commutation filter unit and the secondary charging control unit that are made of diode D6 and filter capacitor C5, this secondary charging control unit is by triode Q3, Q4, resistance R 8, light-emitting diode D9, resistance R 7-R9, R11, R12, three end group reference voltage source device IC1 and electrochemical capacitor C7 form, wherein, the power positive end of the described rectification filtering unit of one termination of the emitter of triode Q4 and resistance R 8, the other end of resistance R 8, the collector electrode of triode Q4, one end of the positive pole of diode D7 and resistance R 9 is parallel with one another, the base stage of another termination triode Q3 of resistance R 9, the collector electrode of triode Q3 is connected to the base stage of triode Q4, the emitter of triode Q3 is by light-emitting diode D9 and resistance R 7 ground connection, the positive and negative two-stage of three end group reference voltage source device IC1 is connected in base stage and the ground of triode Q3 with electrochemical capacitor C7, the negative pole of resistance R 11 1 terminating diode D7, the control end of the other end and three end group reference voltage source device IC1, one end parallel connection of resistance R 12, the other end ground connection of resistance R 12, the exclusive part of its design is:
Described switching tube collector electrode current stabilization unit also comprises a diode D2, the positive pole of this diode D2 connects the emitter of described triode Q2, the minus earth of diode D2, the negative pole of the voltage stabilizing didoe D3 of described switch control unit is connected to the positive pole of described diode Q2.
Further, described secondary charging control unit also comprises: the positive feedback oscillating circuit of being made up of capacitor C 6 and resistance R 10, the power positive end of the described rectification filtering unit of one termination of this capacitor C 6, the other end is connected to the tie point of sample resistance R11, R12 by resistance R 10.
The utility model has following beneficial effect by adopting technique scheme:
1. reduce the static working current of primary circuit, reduced the no-load power consumption of circuit.
2. this circuit descends to the coherence request of the voltage clamping voltage stabilizing didoe D3 of switching tube base stage, has made things convenient for the buying of device.
3. the triode that inferior level charging control section branch is used to control charging current is operated in saturation condition, and device has more reliability.
Description of drawings
Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment
Now with embodiment the utility model is further specified in conjunction with the accompanying drawings.
Consult shown in Figure 1ly, the RCC Switching Power Supply charging circuit of the low unloaded power consumption of present embodiment is divided into the circuit of the primary side part that is positioned at transformer B1 both sides winding and the circuit of primary side part.
The primary side partial circuit with present common design something in common is: the rectification filtering unit that is made of diode D1 and electrochemical capacitor C1, by a winding, the high frequency transformer that secondary winding and accessory power supply winding constitute, a winding of this transformer, switch triode Q1, connect two outputs of described rectification filtering unit after resistance R 4 series connection, the A end of the auxiliary winding of this transformer is by capacitor C 3, resistance R 2 connects the base stage of described switch triode Q1, B holds ground connection, the two ends of starting resistance R1 connect the base stage of the positive power source terminal and the switch triode Q1 of rectification filtering unit respectively, by diode D4, the switch control unit that electrochemical capacitor C2 and voltage stabilizing didoe D3 constitute, the positive pole of described diode D4, the positive pole of voltage stabilizing didoe D3, the negative pole of electrochemical capacitor C2 is parallel with one another, the plus earth of electrochemical capacitor C2, the negative pole of diode D4 connects the A end of the auxiliary winding of described transformer, the switching tube collector electrode current stabilization unit that constitutes by triode Q2 and resistance R 3, the collector electrode of this triode Q2 connects the base stage of described switch triode Q1, and base stage connects the emitter of described switch triode Q1 by resistance R 3.Diode D1 and capacitor C 1 are formed halfwave rectifier and filter circuit; Resistance R 1, resistance R 2, resistance R 4, capacitor C 3, triode Q1 and transformer B1 form conventional Switching Power Supply self-maintained circuit; Diode D5, capacitor C 4, resistance R 5 compositions are cut high-tension circuit.
The exclusive part of its design is: described switching tube collector electrode current stabilization unit also comprises a diode D2, the positive pole of this diode D2 connects the emitter of described triode Q2, the minus earth of diode D2, the negative pole of the voltage stabilizing didoe D3 of described switch control unit is connected to the positive pole of described diode Q2.
Can obtain the value of resistance R 1 greatlyyer like this, to reduce the static working current of circuit, this circuit descends to the coherence request of voltage stabilizing didoe D3 simultaneously, has made things convenient for the buying of device.When self-maintained circuit is in anti-when swashing state, negative voltage can appear in auxiliary winding, diode D4 and capacitor C 4 are formed current rectifying and wave filtering circuit, when voltage surpasses the voltage stabilizing value of diode D3, diode D3 conducting, triode Q2 conduit is controlled in diode D3 conducting again, close triode Q1 work, the length of the ON time of diode D3 can be closed operating time of self-maintained circuit, allows self-oscillation be in the state of having the hiccups.
The primary side partial circuit is concrete: the secondary commutation filter unit and the secondary charging control unit that are made of diode D6 and filter capacitor C5, this secondary charging control unit is by triode Q3, Q4, resistance R 8, light-emitting diode D9, resistance R 7-R9, R11, R12, three end group reference voltage source device IC1 and electrochemical capacitor C7 form, wherein, the power positive end of the described rectification filtering unit of one termination of the emitter of triode Q4 and resistance R 8, the other end of resistance R 8, the collector electrode of triode Q4, one end of the positive pole of diode D7 and resistance R 9 is parallel with one another, the base stage of another termination triode Q3 of resistance R 9, the collector electrode of triode Q3 is connected to the base stage of triode Q4, the emitter of triode Q3 is by light-emitting diode D9 and resistance R 7 ground connection, the positive and negative two-stage of three end group reference voltage source device IC1 is connected in base stage and the ground of triode Q3 with electrochemical capacitor C7, the negative pole of resistance R 11 1 terminating diode D7, the control end of the other end and three end group reference voltage source device IC1, one end parallel connection of resistance R 12, the other end ground connection of resistance R 12.Diode D6 and capacitor C 5 are formed the lower pressure rectifier filter circuit; Resistance R 6 light-emitting diode D8 (green light) are power supply indicator; Triode Q3, triode Q4, resistance R 8, resistance R 9, light-emitting diode D9 and resistance R 7 are formed the out-put supply switching circuit; Light-emitting diode D9 (red light) bright (being illustrated in the charging) when the switching circuit conducting closes light-emitting diode D9 (red light) when switching circuit and extinguishes (the expression charging stops); The unidirectional conducting of diode D7, anti-battery is placed on over-discharge can in the charger; Three end group reference voltage source device IC1, electrochemical capacitor C7, resistance R 11 and resistance R 12 are formed charging voltage control circuit, as the * 2.5V of cell voltage=(R11/R12+1), or (R11/R12+1) (three end group reference voltage source device IC1 model various computing parameters are just different) during * 1.25V, control circuit cuts out triode Q3, triode Q4, and charging finishes.
Improved, described secondary charging control unit also comprises: the positive feedback oscillating circuit of being made up of capacitor C 6 and resistance R 10, the power positive end of the described rectification filtering unit of one termination of this capacitor C 6, the other end is connected to the tie point of sample resistance R11, R12 by resistance R 10.When battery is full of soon; charging voltage is during near the control voltage of three end group reference voltage source device IC1; the progressively conducting of controlled end of three end group reference voltage source device IC1; the base current that flows into triode Q3 reduces gradually; then the output current of triode Q4 reduces; rising along with cell voltage; it is by 6 chargings of 10 pairs of capacitor C of resistance R; then the control end voltage of three end group reference voltage source device IC1 further rises until triode Q3; Q4 turn-offs fully; capacitor C 6 makes the voltage of three end group reference voltage source device IC1 control ends reduce by resistance R 10 discharges afterwards; and then withdraw from conducting state; triode Q3; Q4 recovers conducting; the conducting of triode Q4 causes cell voltage to descend; negative voltage appears in capacitor C 6; further lower the control voltage of controllable silicon IC1; cause controllable silicon IC1 to disconnect fully; triode Q3; the complete operate in saturation of Q4; the positive feedback of capacitor C 6 and resistance R 10 allows the The whole control circuit be in oscillatory regime; stop triode Q3 and triode Q4 is operated in magnifying state; it is excessive to prevent that triode Q4 is in magnifying state power; burn; control the numerical value of capacitor C 6 and resistance R 10 well; except protection triode Q4; can also allow battery when critical being full of, indicator light is in blink states, tells user's battery to be about to be full of.
Although specifically show and introduced the utility model in conjunction with preferred embodiment; but the those skilled in the art should be understood that; in the spirit and scope of the present utility model that do not break away from appended claims and limited; can make various variations to the utility model in the form and details, be protection range of the present utility model.
Claims (2)
1. the RCC Switching Power Supply charging circuit of one kind low unloaded power consumption, comprise: the rectification filtering unit that constitutes by diode D1 and electrochemical capacitor C1, by a winding, the high frequency transformer that secondary winding and accessory power supply winding constitute, a winding of this transformer, switch triode Q1, connect two outputs of described rectification filtering unit after resistance R 4 series connection, the A end of the auxiliary winding of this transformer is by capacitor C 3, resistance R 2 connects the base stage of described switch triode Q1, B holds ground connection, the two ends of starting resistance R1 connect the base stage of the positive power source terminal and the switch triode Q1 of rectification filtering unit respectively, by diode D4, the switch control unit that electrochemical capacitor C2 and voltage stabilizing didoe D3 constitute, the positive pole of described diode D4, the positive pole of voltage stabilizing didoe D3, the negative pole of electrochemical capacitor C2 is parallel with one another, the plus earth of electrochemical capacitor C2, the negative pole of diode D4 connects the A end of the auxiliary winding of described transformer, the switching tube collector electrode current stabilization unit that constitutes by triode Q2 and resistance R 3, the collector electrode of this triode Q2 connects the base stage of described switch triode Q1, base stage connects the emitter of described switch triode Q1 by resistance R 3, this RCC Switching Power Supply charging circuit also comprises: the secondary commutation filter unit and the secondary charging control unit that are made of diode D6 and filter capacitor C5, this secondary charging control unit is by triode Q3, Q4, resistance R 8, light-emitting diode D9, resistance R 7-R9, R11, R12, three end group reference voltage source device IC1 and electrochemical capacitor C7 form, wherein, the power positive end of the described rectification filtering unit of one termination of the emitter of triode Q4 and resistance R 8, the other end of resistance R 8, the collector electrode of triode Q4, one end of the positive pole of diode D7 and resistance R 9 is parallel with one another, the base stage of another termination triode Q3 of resistance R 9, the collector electrode of triode Q3 is connected to the base stage of triode Q4, the emitter of triode Q3 is by light-emitting diode D9 and resistance R 7 ground connection, the positive and negative two-stage of three end group reference voltage source device IC1 is connected in base stage and the ground of triode Q3 with electrochemical capacitor C7, the negative pole of resistance R 11 1 terminating diode D7, the control end of the other end and three end group reference voltage source device IC1, one end parallel connection of resistance R 12, the other end ground connection of resistance R 12 is characterized in that:
Described switching tube collector electrode current stabilization unit also comprises a diode D2, the positive pole of this diode D2 connects the emitter of described triode Q2, the minus earth of diode D2, the negative pole of the voltage stabilizing didoe D3 of described switch control unit is connected to the positive pole of described diode Q2.
2. the RCC Switching Power Supply charging circuit of a kind of low unloaded power consumption as claimed in claim 1, it is characterized in that: described secondary charging control unit also comprises: the positive feedback oscillating circuit of being made up of capacitor C 6 and resistance R 10, the power positive end of the described rectification filtering unit of one termination of this capacitor C 6, the other end is connected to the tie point of sample resistance R11, R12 by resistance R 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200157870U CN201910653U (en) | 2011-01-15 | 2011-01-15 | Charging circuit of RCC (ringing choke converter) switching power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200157870U CN201910653U (en) | 2011-01-15 | 2011-01-15 | Charging circuit of RCC (ringing choke converter) switching power supply |
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| Publication Number | Publication Date |
|---|---|
| CN201910653U true CN201910653U (en) | 2011-07-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200157870U Expired - Fee Related CN201910653U (en) | 2011-01-15 | 2011-01-15 | Charging circuit of RCC (ringing choke converter) switching power supply |
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| CN (1) | CN201910653U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103199710A (en) * | 2013-04-01 | 2013-07-10 | 上海师范大学 | Low-power consumption standby switching power source |
| CN103647454A (en) * | 2013-12-23 | 2014-03-19 | 无锡隆玛科技股份有限公司 | Self-powered power circuit of photovoltaic system |
| CN105576783A (en) * | 2016-01-21 | 2016-05-11 | 苏州经贸职业技术学院 | Charging circuit |
-
2011
- 2011-01-15 CN CN2011200157870U patent/CN201910653U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103199710A (en) * | 2013-04-01 | 2013-07-10 | 上海师范大学 | Low-power consumption standby switching power source |
| CN103647454A (en) * | 2013-12-23 | 2014-03-19 | 无锡隆玛科技股份有限公司 | Self-powered power circuit of photovoltaic system |
| CN103647454B (en) * | 2013-12-23 | 2016-03-23 | 无锡隆玛科技股份有限公司 | Photovoltaic system self powered supply circuit |
| CN105576783A (en) * | 2016-01-21 | 2016-05-11 | 苏州经贸职业技术学院 | Charging circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110727 Termination date: 20140115 |