CN201967231U - High power constant output voltage-stabilizing circuit - Google Patents
High power constant output voltage-stabilizing circuit Download PDFInfo
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- CN201967231U CN201967231U CN201120067386XU CN201120067386U CN201967231U CN 201967231 U CN201967231 U CN 201967231U CN 201120067386X U CN201120067386X U CN 201120067386XU CN 201120067386 U CN201120067386 U CN 201120067386U CN 201967231 U CN201967231 U CN 201967231U
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Abstract
The utility model discloses a high power constant output voltage-stabilizing circuit, which comprises a filtering rectification circuit (1), an APFC (active power factor correction) voltage-stabilizing circuit (2) and a variable frequency oscillating circuit (3). An alternating current input end of the filtering rectification circuit (1) is connected with a mains supply, a direct current output end of the filtering rectification circuit (1) is connected with the APFC voltage-stabilizing circuit (2), an output end of the APFC voltage-stabilizing circuit (2) is connected with the variable frequency oscillating circuit (3), and an output end of the variable frequency oscillating circuit (3) is connected with a lamp tube. Direct current is obtained after the mains supply passes through the filtering rectification circuit, stable 400V direct current is obtained after the direct current passes through the AFPC voltage-stabilizing circuit, and the 400V direct current is supplied to the lamp tube after being variable frequency oscillated. The circuit can guarantee that a circuit power can not be affected when the mains supply changes, a working condition of high power energy-saving lamps is stable, and the service life of the high power energy-saving lamps is effectively prolonged.
Description
Technical field
The utility model relates to a kind of high-power permanent output type voltage stabilizing circuit.
Background technology
High-power energy-saving lamp has been widely used in the middle of the commercial and industrial illumination at present, traditional high-power energy-saving lamp substantially all is traditional filtering, rectification circuit and pfc circuit, sort circuit in use can be subjected to line voltage to be changed and influence of fluctuations, when voltage raises, output voltage raises, the power of high-power energy-saving lamp also increases, when line voltage reduces, circuit output voltage reduces, the power of high-power energy-saving lamp reduces, sort circuit all can change with characterized by city-power output voltage and electric current thereupon, the power of high-power energy-saving lamp also can increase thereupon and reduce, and when too high, the power of electricity-saving lamp also can increase too high as the line voltage increase, cause the overwork of circuit and fluorescent tube, cause the damage of electricity-saving lamp and the useful life of shortening electricity-saving lamp, if line voltage is low excessively, circuit output voltage is low excessively, then might cause fluorescent tube to start difficulty, fluorescent tube can't be lighted.Therefore, traditional circuit exists the voltage adaptation scope little, power and unstable working condition, the problem that the life-span is short.At present, big in order to solve high-power rate traditional circuit influence by voltage, power and unstable working condition, the high-power energy-saving lamp aspect this on the one hand also not preferably circuit solve, badly influence the promotion and application of high-power energy-saving lamp.
The utility model content
Technical problem to be solved in the utility model is to overcome the deficiencies in the prior art, and a kind of working stability, long high-power permanent output type voltage stabilizing circuit of life-span are provided.
The technical scheme that the utility model adopted is: the utility model comprises filter rectifier, APFC power factor correction voltage stabilizing circuit, oscillation inverter circuit, described filter rectifier ac input end is electrically connected with the city, the dc output end of described filter rectifier connects described APFC power factor correction voltage stabilizing circuit, the output of described APFC power factor correction voltage stabilizing circuit connects described oscillation inverter circuit, and the output of described oscillation inverter circuit connects fluorescent tube.
Described filter rectifier comprises the single phase bridge type rectifier circu of being made up of four crystal diodes, the interchange input side shunt capacitance 1 of described single phase bridge type rectifier circu, the end series inductance that described single phase bridge type rectifier circu exchanges input side is connected with the civil power phase line with fuse, the other end that described single phase bridge type rectifier circu exchanges input side is connected with the civil power zero line, the positive pole of the direct current outlet side of described single phase bridge type rectifier circu connects described APFC power factor correction voltage stabilizing circuit, the negative pole of the direct current outlet side of described single phase bridge type rectifier circu is the GND binding post, and described single phase bridge type rectifier circu direct current outlet side just, shunt capacitance 2 between negative pole.
Described APFC power factor correction voltage stabilizing circuit (2) comprises diode 5, diode 6, diode 7, voltage stabilizing didoe, electric capacity 3, electric capacity 4, electric capacity 5, electrochemical capacitor 1, resistance 1, resistance 2, resistance 3, resistance 4, resistance 5, resistance 6, resistance 7, resistance 8, resistance 9, resistance 10, resistance 11, resistance 12, resistance 13, chip, field effect transistor, transformer, one end of described primary connects an end of described resistance 2, one end of resistance 6, the positive pole of described single phase bridge type rectifier circu direct current outlet side, the other end of described primary connects the positive pole of described diode 7 and the drain electrode of described field effect transistor, the negative pole of described diode 7 is the DC binding post, the other end of described resistance 6 connects an end of described resistance 7, the tripod of described chip, the other end of described resistance 7 connects described GND binding post, described electric capacity 5 is in parallel with described resistance 7, described GND binding post also is connected with an end of described electric capacity 3, the positive pole of voltage stabilizing didoe, one end of resistance 8, one end of resistance 9, one end of resistance 10, the negative pole of described voltage stabilizing didoe connects the other end of described electric capacity 3, the octal of described chip, the negative pole of described diode 5, described resistance 3 one auspicious, the other end of the auspicious connection resistance 2 of another of described resistance 3, one end ground connection of described transformer secondary output, the other end of described transformer secondary output connects an end of described resistance 1, one end of described resistance 4, one end of described resistance 5, the negative pole of described diode 6, the 7th pin of described chip, the other end of described resistance 1 connects the positive pole of described diode 5, the other end of described resistance 4 connects the 5th pin of described chip, the 6th pin ground connection of described chip, described electric capacity 4 in parallel between the 1st pin of described chip and crus secunda, the grid of described field effect transistor connects the negative pole of described diode 6 and the other end of described resistance 4, the source electrode of described field effect transistor connects the 4th pin of described chip, the other end of resistance 8, the other end of resistance 9, described resistance 11, resistance 12, resistance 10 is connected successively, the described DC binding post of another termination of described resistance 11, the other end of described resistance 10 connects described GND binding post, described electrochemical capacitor 1, resistance 13 is connected in parallel on respectively between described DC binding post and described GND binding post.
Described oscillation inverter circuit comprises diode 8, diode 9, diode 10, diode 10, diode 11, diode 12, diode 13, bidirectional diode, triode 1, triode 2, electric capacity 6, electric capacity 7, electric capacity 8, electric capacity 9, electric capacity 10, electric capacity 11, resistance 14, resistance 15, resistance 16, resistance 17, resistance 18, resistance 19, inductance 1, inductance 2, inductance 3, inductance 4, inductance 5, inductance 6, the collector electrode of described triode 1 connects an end of described electric capacity 10, the negative pole of described diode 8, one end of described electric capacity 6, one end of described resistance 14, described GND binding post, the emitter of described triode 1 connects an end of described resistance 17, the other end of described resistance 17 connects an end of described inductance 3, one end of described inductance 1, the positive pole of described diode 8, the other end of described electric capacity 6, the other end of described resistance 14, the negative pole of described diode 9, one end of resistance 15, the negative pole of diode 10, the collector electrode of described triode 2, the emitter of described triode 2 connects an end of described resistance 19, the other end of described resistance 19 connects an end of described inductance 2, one end of described electric capacity 7, described GND binding post, the other end of described resistance 15 connects the other end of described electric capacity 7, the positive pole of described diode 10, one end of described bidirectional diode, described diode 11 in parallel and electric capacity 9 between the emitter of described triode 2 and base stage, the base stage of described triode 2 connects an end of described inductance 6 and the other end of described bidirectional diode, described resistance 18 in parallel between the other end of the other end of described inductance 6 and described inductance 2, described diode diode 10 in parallel and electric capacity 8 between the emitter of described triode 1 and base stage, the base stage of described triode 1 connects an end of described inductance 5, the described resistance 16 of connecting between the other end of the other end of described inductance 5 and described inductance 1, the other end of the described inductance 3 described inductance 4 of connecting connects fluorescent tubes one end, the other end of described electric capacity 10 connects the other end of fluorescent tube, difference described diode 12 in parallel on the filament of described lamp tube ends, diode 13, described electric capacity 11 is connected in parallel on described lamp tube ends.
The beneficial effects of the utility model are: the utility model comprises filter rectifier (1), APFC power factor correction voltage stabilizing circuit (2), oscillation inverter circuit (3), described filter rectifier (1) ac input end is electrically connected with the city, the dc output end of described filter rectifier (1) connects described APFC power factor correction voltage stabilizing circuit (2), the output of described APFC power factor correction voltage stabilizing circuit (2) connects described oscillation inverter circuit (3), the output of described oscillation inverter circuit (3) connects fluorescent tube, the direct current that civil power obtains behind the rectification circuit after filtration is through the APFC circuit of power factor correction, obtain stable 400V direct current, the direct current of 400V is supplied with fluorescent tube through behind the oscillation inverter, this circuit is when civil power changes, the power of circuit is not affected, guarantee the stability of high-power energy-saving lamp operating state, effectively prolonged high-power energy saving useful life.
Description of drawings
Fig. 1 is the utility model circuit structure block diagram;
Fig. 2 is described filter rectifier and APFC power factor correction voltage stabilizing circuit principle schematic;
Fig. 3 is described oscillation inverter circuit theory schematic diagram.
Embodiment
As Fig. 1, Fig. 2, shown in Figure 3, the utility model in the present embodiment, described high-power permanent output type voltage stabilizing circuit comprises filter rectifier 1, APFC power factor correction voltage stabilizing circuit 2, oscillation inverter circuit 3, described filter rectifier 1 ac input end is electrically connected with the city, the dc output end of described filter rectifier 1 connects described APFC power factor correction voltage stabilizing circuit 2, the output of described APFC power factor correction voltage stabilizing circuit 2 connects described oscillation inverter circuit 3, and the output of described oscillation inverter circuit 3 connects fluorescent tube.
Described filter rectifier 1 comprises the single phase bridge type rectifier circu of being made up of four crystal diodes, interchange input side shunt capacitance 1 C1 of described single phase bridge type rectifier circu, the end series inductance L1 that described single phase bridge type rectifier circu exchanges input side is connected with the civil power phase line with fuse, the other end that described single phase bridge type rectifier circu exchanges input side is connected with the civil power zero line, the positive pole of the direct current outlet side of described single phase bridge type rectifier circu connects described APFC power factor correction voltage stabilizing circuit 2, the negative pole of the direct current outlet side of described single phase bridge type rectifier circu is the GND binding post, and described single phase bridge type rectifier circu direct current outlet side just, shunt capacitance 2 C2 between negative pole.
Described APFC power factor correction voltage stabilizing circuit 2 comprises diode 5 D5, diode 6 D6, diode 7 D7, voltage stabilizing didoe ZD1, electric capacity 3 C3, electric capacity 4 C4, electric capacity 5 C5, electrochemical capacitor 1 C6, resistance 1 R1, resistance 2 R2A, resistance 3 R2B, resistance 4 R3, resistance 5 R4, resistance 6 R5, resistance 7 R6, resistance 8 R7A, resistance 9 R7B, resistance 10 R8, resistance 11 R9A, resistance 12 R9B, resistance 13 R10, chip IC 1, field effect transistor Q1, transformer L2, the elementary end of described transformer L2 connects the end of described resistance 2 R2A, the end of resistance 6 R5, the positive pole of described single phase bridge type rectifier circu direct current outlet side, the elementary other end of described transformer L2 connects the positive pole of described diode 7 D7 and the drain electrode of described field effect transistor Q1, the negative pole of described diode 7 D7 is the DC binding post, the other end of described resistance 6 R5 connects the end of described resistance 7 R6, the tripod of described chip IC 1, the other end of described resistance 7 R6 connects described GND binding post, described electric capacity 5 C5 are in parallel with described resistance 7 R6, described GND binding post also is connected with the end of described electric capacity 3 C3, the positive pole of voltage stabilizing didoe ZD1, the end of resistance 8 R7A, the end of resistance 9 R7B, the end of resistance 10 R8, the negative pole of described voltage stabilizing didoe ZD1 connects the other end of described electric capacity 3 C3, the octal of described chip IC 1, the negative pole of described diode 5 D5, described resistance 3 R2B's is one auspicious, the other end of auspicious connection resistance 2 R2A of another of described resistance 3 R2B, one end ground connection of L2 level of described transformer, the other end of L2 level of described transformer connects the end of described resistance 1 R1, the end of described resistance 4 R3, the end of described resistance 5 R4, the negative pole of described diode 6 D6, the 7th pin of described chip IC 1, the other end of described resistance 1 R1 connects the positive pole of described diode 5 D5, the other end of described resistance 4 R3 connects the 5th pin of described chip IC 1, the 6th pin ground connection of described chip IC 1, described electric capacity 4 C4 in parallel between the 1st pin of described chip IC 1 and crus secunda, the grid of described field effect transistor Q1 connects the negative pole of described diode 6 D6 and the other end of described resistance 4 R3, the source electrode of described field effect transistor Q1 connects the 4th pin of described chip IC 1, the other end of resistance 8 R7A, the other end of resistance 9 R7B, described resistance 11 R9A, resistance 12 R9B, resistance 10 R8 connect successively, the described DC binding post of another termination of described resistance 11 R9A, the other end of described resistance 10 R8 connects described GND binding post, described electrochemical capacitor 1 C6, resistance 13 R10 are connected in parallel on respectively between described DC binding post and described GND binding post.
Described oscillation inverter circuit 3 comprises diode 8 D8, diode 9 D10, diode 10 D11, diode 10 D14, diode 11 D16, diode 12 D18, diode 13 D19, bidirectional diode DB3A, triode 1 Q2, triode 2 Q4, electric capacity 6 C7, electric capacity 7 C9, electric capacity 8 C11, electric capacity 9 C13, electric capacity 10 C15, electric capacity 11 C17, resistance 14 R11, resistance 15 R13, resistance 16 R15, resistance 17 R17, resistance 18 R19, resistance 19 R21, inductance 1 T1-1, inductance 2 T1-2, inductance 3 T1-3, inductance 4 L3, inductance 5 L4, inductance 6 L7, the collector electrode of described triode 1 Q2 connects the end of described electric capacity 10 C15, the negative pole of described diode 8 D8, the end of described electric capacity 6 C7, the end of described resistance 14 R11, described GND binding post, the emitter of described triode 1 Q2 connects the end of described resistance 17 R17, the other end of described resistance 17 R17 connects the end of described inductance 3 T1-3, the end of described inductance 1 T1-1, the positive pole of described diode 8 D8, the other end of described electric capacity 6 C7, the other end of described resistance 14 R11, the negative pole of described diode 9 D10, the end of resistance 15 R13, the negative pole of diode 10 D11, the collector electrode of described triode 2 Q4, the emitter of described triode 2 Q4 connects the end of described resistance 19 R21, the other end of described resistance 19 R21 connects the end of described inductance 2 T1-2, the end of described electric capacity 7 C9, described GND binding post, the other end of described resistance 15 R13 connects the other end of described electric capacity 7 C9, the positive pole of described diode 10 D11, the end of described bidirectional diode DB3A, described diode 11 D16 in parallel and electric capacity 9 C13 between the emitter of described triode 2 Q4 and base stage, the base stage of described triode 2 Q4 connects the end of described inductance 6 L7 and the other end of described bidirectional diode DB3A, described resistance 18 R19 in parallel between the other end of the other end of described inductance 6 L7 and described inductance 2 T1-2, described diode diode 10 D14 in parallel and electric capacity 8 C11 between the emitter of described triode 1 Q2 and base stage, the base stage of described triode 1 Q2 connects the end of described inductance 5 L4, described resistance 16 R15 connect between the other end of the other end of described inductance 5 L4 and described inductance 1 T1-1, connect described inductance 4 L3 of the other end of described inductance 3 T1-3 connect fluorescent tube one end, the other end of described electric capacity 10 C15 connects the other end of fluorescent tube, difference described diode 12 D18 in parallel on the filament of described lamp tube ends, diode 13 D19, described electric capacity 11 C17 are connected in parallel on described lamp tube ends.
The operation principle of present embodiment is: filter rectifier is by diode D1-D4, capacitor C 1, inductance L 1, capacitor C 2 is formed, main effect is after the voltage between the 110-220v is imported, through this circuit output direct current 110-220V voltage, obtain stable 400V direct voltage by APC capability correction voltage stabilizing circuit then, APFC power factor correction voltage stabilizing circuit is mainly by chip IC 1, field effect transistor Q1, diode D7A forms, and main effect is to convert the dc voltage that 110-220V changes to constant 400V direct voltage; The oscillation inverter circuit mainly is by triode Q2, Q3, and Q4, Q5, transformer T1, T2, L3, L4, capacitor C 15, C16, C17, C18 forms, and main effect is to convert the 400V direct current to high-frequency ac, and high-frequency alternating current is lighted fluorescent tube.The course of work of entire circuit: when the 110V-220V alternating current was imported, by capacitor C 1, inductance L 1 filtering entered diode D1-D4 rectification, through chip IC, field effect transistor Q1, the constant voltage stabilizing 400V direct current of diode D7A conversion output, constant 400V direct current is through triode Q2, Q3, Q4, Q5, inductance T1, T2, L3, L4, capacitor C 15, C16, C17, C18 produces circuit oscillation, in capacitor C 17, C18 two ends output high-frequency ac voltage, high-frequency ac voltage is lighted fluorescent tube.
Claims (4)
1. high-power permanent output type voltage stabilizing circuit, it is characterized in that: described high-power permanent output type voltage stabilizing circuit comprises filter rectifier (1), APFC power factor correction voltage stabilizing circuit (2), oscillation inverter circuit (3), described filter rectifier (1) ac input end is electrically connected with the city, the dc output end of described filter rectifier (1) connects described APFC power factor correction voltage stabilizing circuit (2), the output of described APFC power factor correction voltage stabilizing circuit (2) connects described oscillation inverter circuit (3), and the output of described oscillation inverter circuit (3) connects fluorescent tube.
2. high-power permanent output type voltage stabilizing circuit according to claim 1, it is characterized in that: described filter rectifier (1) comprises the single phase bridge type rectifier circu of being made up of four crystal diodes, the interchange input side shunt capacitance 1(C1 of described single phase bridge type rectifier circu), the end series inductance (L1) that described single phase bridge type rectifier circu exchanges input side is connected with the civil power phase line with fuse, the other end that described single phase bridge type rectifier circu exchanges input side is connected with the civil power zero line, the positive pole of the direct current outlet side of described single phase bridge type rectifier circu connects described APFC power factor correction voltage stabilizing circuit (2), the negative pole of the direct current outlet side of described single phase bridge type rectifier circu is the GND binding post, and described single phase bridge type rectifier circu direct current outlet side just, shunt capacitance 2(C2 between negative pole).
3. high-power permanent output type voltage stabilizing circuit according to claim 1 and 2, it is characterized in that: described APFC power factor correction voltage stabilizing circuit (2) comprises diode 5(D5), diode 6(D6), diode 7(D7), voltage stabilizing didoe (ZD1), electric capacity 3(C3), electric capacity 4(C4), electric capacity 5(C5), electrochemical capacitor 1(C6), resistance 1(R1), resistance 2(R2A), resistance 3(R2B), resistance 4(R3), resistance 5(R4), resistance 6(R5), resistance 7(R6), resistance 8(R7A), resistance 9(R7B), resistance 10(R8), resistance 11(R9A), resistance 12(R9B), resistance 13(R10), chip (IC1), field effect transistor (Q1), transformer (L2), the elementary end of described transformer (L2) connects described resistance 2(R2A) an end, resistance 6(R5) a end, the positive pole of described single phase bridge type rectifier circu direct current outlet side, the elementary other end of described transformer (L2) connects described diode 7(D7) positive pole and the drain electrode of described field effect transistor (Q1), described diode 7(D7) negative pole is the DC binding post, described resistance 6(R5) the other end connects described resistance 7(R6) an end, the tripod of described chip (IC1), described resistance 7(R6) the other end connects described GND binding post, described electric capacity 5(C5) with described resistance 7(R6) in parallel, described GND binding post also is connected with described electric capacity 3(C3) an end, the positive pole of voltage stabilizing didoe (ZD1), resistance 8(R7A) a end, resistance 9(R7B) a end, resistance 10(R8) a end, the negative pole of described voltage stabilizing didoe (ZD1) connects described electric capacity 3(C3) the other end, the octal of described chip (IC1), described diode 5(D5) negative pole, described resistance 3(R2B) one auspicious, described resistance 3(R2B) the other end auspicious connection resistance 2(R2A of another), the end ground connection that described transformer (L2) is secondary, the secondary other end of described transformer (L2) connects described resistance 1(R1) an end, described resistance 4(R3) a end, described resistance 5(R4) a end, described diode 6(D6) negative pole, the 7th pin of described chip (IC1), described resistance 1(R1) the other end connects described diode 5(D5) positive pole, described resistance 4(R3) the other end connects the 5th pin of described chip (IC1), the 6th pin ground connection of described chip (IC1), described electric capacity 4(C4 in parallel between the 1st pin of described chip (IC1) and crus secunda), the grid of described field effect transistor (Q1) connects described diode 6(D6) negative pole and described resistance 4(R3) the other end, the source electrode of described field effect transistor (Q1) connects the 4th pin of described chip (IC1), resistance 8(R7A) the other end, resistance 9(R7B) the other end, described resistance 11(R9A), resistance 12(R9B), resistance 10(R8) series connection successively, described resistance 11(R9A) the described DC binding post of another termination, described resistance 10(R8) the other end connects described GND binding post, described electrochemical capacitor 1(C6), resistance 13(R10) is connected in parallel on respectively between described DC binding post and described GND binding post.
4. high-power permanent output type voltage stabilizing circuit according to claim 3, it is characterized in that: described oscillation inverter circuit (3) comprises diode 8(D8), diode 9(D10), diode 10(D11), diode 10(D14), diode 11(D16), diode 12(D18), diode 13(D19), bidirectional diode (DB3A), triode 1(Q2), triode 2(Q4), electric capacity 6(C7), electric capacity 7(C9), electric capacity 8(C11), electric capacity 9(C13), electric capacity 10(C15), electric capacity 11(C17), resistance 14(R11), resistance 15(R13), resistance 16(R15), resistance 17(R17), resistance 18(R19), resistance 19(R21), inductance 1(T1-1), inductance 2(T1-2), inductance 3(T1-3), inductance 4(L3), inductance 5(L4), inductance 6(L7), described triode 1(Q2) collector electrode connects described electric capacity 10(C15) an end, described diode 8(D8) negative pole, described electric capacity 6(C7) a end, described resistance 14(R11) a end, described GND binding post, described triode 1(Q2) emitter connects described resistance 17(R17) an end, described resistance 17(R17) the other end connects described inductance 3(T1-3) an end, described inductance 1(T1-1) a end, described diode 8(D8) positive pole, described electric capacity 6(C7) the other end, described resistance 14(R11) the other end, described diode 9(D10) negative pole, resistance 15(R13) a end, diode 10(D11) negative pole, described triode 2(Q4) collector electrode, described triode 2(Q4) emitter connects described resistance 19(R21) an end, described resistance 19(R21) the other end connects described inductance 2(T1-2) an end, described electric capacity 7(C9) a end, described GND binding post, described resistance 15(R13) the other end connects described electric capacity 7(C9) the other end, described diode 10(D11) positive pole, one end of described bidirectional diode (DB3A), described diode 11(D16 in parallel between emitter described triode 2(Q4) and base stage) and electric capacity 9(C13), described triode 2(Q4) base stage connects described inductance 6(L7) an end and the other end of described bidirectional diode (DB3A), described inductance 6(L7) the other end and described inductance 2(T1-2) the other end between described resistance 18(R19 in parallel), described diode diode 10(D14 in parallel between emitter described triode 1(Q2) and base stage) and electric capacity 8(C11), described triode 1(Q2) base stage connects described inductance 5(L4) an end, described inductance 5(L4) the other end and described inductance 1(T1-1) the other end between the described resistance 16(R15 that connects), described inductance 3(T1-3) the other end described inductance 4(L3 that connects) connects fluorescent tube one end, described electric capacity 10(C15) the other end connects the other end of fluorescent tube, difference described diode 12(D18 in parallel on the filament of described lamp tube ends), diode 13(D19), described electric capacity 11(C17) be connected in parallel on described lamp tube ends.
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CN201120067386XU CN201967231U (en) | 2011-03-15 | 2011-03-15 | High power constant output voltage-stabilizing circuit |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102723964A (en) * | 2012-06-20 | 2012-10-10 | 天津里外科技有限公司 | Radio frequency front-end transceiver of silent surface filter of multi-standard mobile terminal |
CN110429488A (en) * | 2019-06-06 | 2019-11-08 | 国网山东省电力公司高青县供电公司 | A kind of direct current cabinet replacement portable load switching power supply box |
CN110582151A (en) * | 2019-09-10 | 2019-12-17 | 宁波颐栎庭园用品有限公司 | Intelligent inductor |
-
2011
- 2011-03-15 CN CN201120067386XU patent/CN201967231U/en not_active Expired - Fee Related
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102723964A (en) * | 2012-06-20 | 2012-10-10 | 天津里外科技有限公司 | Radio frequency front-end transceiver of silent surface filter of multi-standard mobile terminal |
CN110429488A (en) * | 2019-06-06 | 2019-11-08 | 国网山东省电力公司高青县供电公司 | A kind of direct current cabinet replacement portable load switching power supply box |
CN110582151A (en) * | 2019-09-10 | 2019-12-17 | 宁波颐栎庭园用品有限公司 | Intelligent inductor |
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