CN109995222B - Power supply circuit with abnormal standby power supply - Google Patents
Power supply circuit with abnormal standby power supply Download PDFInfo
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- CN109995222B CN109995222B CN201910198542.7A CN201910198542A CN109995222B CN 109995222 B CN109995222 B CN 109995222B CN 201910198542 A CN201910198542 A CN 201910198542A CN 109995222 B CN109995222 B CN 109995222B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/14—Arrangements for reducing ripples from dc input or output
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0048—Circuits or arrangements for reducing losses
- H02M1/0054—Transistor switching losses
- H02M1/0058—Transistor switching losses by employing soft switching techniques, i.e. commutation of transistors when applied voltage is zero or when current flow is zero
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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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Direct Current Feeding And Distribution (AREA)
Abstract
The invention discloses a power supply circuit with abnormal standby power supply, which comprises a main processing channel of an equipment power supply and a power supply soft switch control circuit; the main processing channel of the equipment power supply comprises an input power supply filter, a power supply switch and a power supply conversion processing module; the power switch is used as a device power switch component; the power supply conversion processing module is an internal power supply processing part of the equipment; the power supply soft switch control circuit comprises a coupling unit, a micro switch unit, an instant power supply unit, a power supply switching unit, a key action generating unit and a switch state generating unit. The invention is beneficial to reducing the power consumption of the equipment, the corresponding circuit only has little power consumption in the power-on working state of the equipment, and the power consumption is not generated in the power-off state of the equipment, thereby being beneficial to reducing the power consumption of the equipment and being especially suitable for equipment sensitive to the power consumption, such as battery-powered equipment. Under the power-off state, the control circuit is in the non-power state, so that the service life of the control circuit is prolonged, and the reliability of the equipment is improved.
Description
Technical Field
The invention relates to a power supply circuit for supplying power without standby.
Background
The conventional power switch is located in the power supply path and the device operating current flows entirely through the power switch. When the working current of the equipment is larger, a power switch which can be electrified with larger current is often needed, and the size of the power switch which can be electrified with larger current is larger. When the device is small in size (as in a portable device), the application of a bulky power switch is often limited.
In portable devices such as handheld devices and backpack devices, a soft power switch is often used to replace a conventional power switch due to its small size. In existing implementations, the soft power switch requires a set of permanent power supplies to provide the necessary power for the relevant circuits. The circuit operation principle block diagram is shown in the following figure 1.
In fig. 1, the backup power supply provides the power supply required by the operation of the control processing circuit, the input of the backup power supply is derived from the equipment power supply or the battery, and when the voltage of the power supply or the battery cannot meet the operation requirement of the control processing circuit, the backup power supply performs a voltage stabilization design to ensure that the output is within the voltage adaptation range of the control processing circuit. The control processing circuit is generally composed of a logic chip or a singlechip, and realizes the logic processing function of input signals. The power switch is composed of a transistor with low on-resistance or a relay, and the like, and is controlled by the control processing circuit.
The control flow of the common power soft switch is as follows: the micro switch forms a control input signal, the control input signal is processed by the control processing circuit, and then a control logic level is output, the control logic level is driven and then used for controlling the power switch, and the control power input is communicated or disconnected with the power load.
The biggest characteristic of the scheme is that the control processing circuit needs a stock power supply. As long as the power input or the battery exists, the standby power and the control processing circuit are in a full-time working state, which causes the power or the battery to process an energy loss state for a long time. In a battery-powered device, the design scheme can reduce the cruising ability of the device and is not an optimal design scheme with low power consumption.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: in the equipment sensitive to power consumption and limited space, a user does not need to supply power constantly, and the on-off control of a large-current power supply of the equipment is realized by using a micro-button. By adopting the single-key power supply soft switching circuit with abnormal standby power supply, the power supply loss of the equipment is reduced, the complexity of the power supply soft switching circuit is simplified, and the reliability of the equipment is improved.
The purpose of the invention is realized by the following technical scheme:
a power supply circuit for supplying power without standby power supply comprises a main processing channel of a device power supply and a power supply soft switch control circuit;
the main processing channel of the equipment power supply comprises an input power supply filter, a power supply switch and a power supply conversion processing module;
the input power supply filtering mainly realizes the function of an isolator, plays a role of bidirectional filtering, prevents external power supply interference from influencing an internal power supply and a circuit of equipment, prevents various interferences in the equipment from entering an external public power supply signal through a power supply circuit, and meets the requirements on the electromagnetic compatibility of the equipment related to power supply;
the power switch is used as a power switch component of the equipment and realizes the on-off of the input power supply signal under the control of a switch control signal cg;
the power supply conversion processing module is an internal power supply processing part of the equipment and outputs main power supplies required by the equipment, such as +5V, +3.3V and the like;
the power supply soft switch control circuit comprises a coupling unit, a micro switch unit, an instant power supply unit, a power supply switching unit, a key action generating unit and a switch state generating unit;
the coupling unit outputs a low-voltage low-current signal V _ k meeting the requirement of a subsequent circuit for a subsequent related circuit unit to use by performing attenuation isolation processing on the filtered power input signal V _ inf; when the micro switch is in a release state, the coupling unit does not consume electric energy;
the microswitch is a switch control component of an equipment power supply and has two states of being pressed down to be switched on and being released to be switched off;
the instant power supply unit provides temporary power supply for the whole control circuit; when the microswitch is pressed to be in a closed state, the coupled power supply V _ k is connected to the instant power supply unit, and the instant power supply unit quickly generates and outputs a direct-current power supply Vc required by the control circuit; when the release microswitch is in an off state, the output of the instant power supply unit closes the external power supply after the set time; in the set time, the equipment power supply conversion processing module can be ensured to finish conversion processing and supply power to the equipment normally;
the power supply switching unit realizes seamless switching from the instantaneous power supply output power supply Vc to a certain power supply V _ s0 in the output of the power supply conversion processing module, and provides stable power supply for the switch state generating unit, so that the state of a switch control signal can be effectively controlled, and the power supply switch is kept stably controlled;
the key action generating unit generates a pulse signal ps under the trigger of the output power supply Vc of the instant power supply unit and timely reflects the pressing and releasing actions of the micro switch;
the switch state generating unit takes Vcc as a working power supply, generates and outputs a switch control signal cg under the trigger of pulses ps, and controls the action of a power switch: and the switch is switched on or off to realize the function of switching on or off the power supply of the equipment.
As a preferred mode, in order to prevent misoperation and maintain the stability of control, the circuit outputs a corresponding pulse signal only after the microswitch K needs to be stably pressed for a certain time; after the microswitch K is released for a certain time, the pulse signal disappears.
Preferably, the main power supply required by the output device comprises +5V and/or + 3.3V.
Preferably, the power switch is a MOS switch; the power supply soft switch control circuit comprises resistors R1, R2 and R3, a microswitch K, a capacitor C1, a voltage regulator tube V1, diodes V2 and V3 and a counter D1;
the resistor R1 is respectively connected with the power supply filtering output and the microswitch K, the microswitch K is respectively connected with the voltage regulator tube V1 and the resistor R2, and the anode of the voltage regulator tube V1 is grounded; the capacitor C1 and the resistor R3 form a parallel circuit, one end of the parallel circuit is connected with the resistor R2 and the cp end of the counter D1, and the other end of the parallel circuit is grounded;
the cathodes of the diodes V2 and V3 are connected together and connected to the Vcc end of the counter D1, the anode of the diode V2 is connected to the cathode of the stabilivolt V1, the anode of the diode V3 is connected to the power conversion processing module, and the counter Q0 is connected to the MOS switch.
The resistor R1 is used as a power supply coupling unit or a power supply coupling component, and after the microswitch K is pressed down, the voltage regulator tube V1 is used as an instant power supply unit to immediately form temporary power supply;
the temporary power supply supplies power to the switch state generating unit D1 through V2, and the Q0 end of D1 outputs 0 level to enable the MOS switch to be in a closed state;
the V2 and the V3 form a power supply switching unit, and when the equipment power supply conversion processing module supplies power normally, the power supply of the D1 is immediately switched to + 5V;
r2, C1 and R3 form a pulse forming circuit or a key action generating unit, a temporary power supply signal passes through the circuit and then forms a rising jump from 0 to 1 at the cp input of D1, the rising edge of the jump triggers D1, so that an output signal Vc at the Q0 end of D1 jumps from 0 level to 1 level, an MOS (metal oxide semiconductor) tube is controlled to be in a conducting state, a power supply of equipment is switched on, a power supply conversion processing module works normally, and the power supply starting function is realized;
after the micro switch K is released for a certain time, the temporary power supply disappears, and after a certain time, the cp end pulse signal of D1 is changed from 1 to 0, and the output of the Q0 end of D1 keeps 1 level unchanged, so that the power supply of the equipment is continuously kept in the starting working state;
when the micro switch K is pressed again, the cp end of the D1 generates an upper jump pulse again, so that the output signal Vc of the Q0 end of the D1 jumps from 1 to 0, the MOS switch is controlled to be in a closed state, and the power-off operation of the equipment is realized.
In the power-off state of the equipment, the power consumption of the circuit is 0; in the power-on working state of the device, the power consumption of the circuit is mainly D1, and the working current of the circuit is in milliampere level.
Preferably, V1 is replaced by an ac rectifier circuit, and the positive electrode of V2 is connected to the output of the rectifier circuit, thereby realizing the switching control of the ac power supply. The circuit can also be used for alternating current switch control through adjustment of the instant power supply unit circuit.
The invention has the beneficial effects that:
(1) a power supply does not need to be constantly arranged in the control circuit, and the power consumption of the equipment is favorably reduced. The standby power supply in the conventional soft switching circuit is in a working state as long as the power supply input is not disconnected in the conventional circuit, and correspondingly, the control circuit of the conventional soft switching circuit is also in a power-on working state. The standby power supply and the control circuit under the work can introduce certain power consumption, and the power consumption of the equipment is increased. The invention has no ordinary power supply, and the corresponding circuit only has little power consumption in the power-on working state of the equipment, and does not generate power consumption in the power-off state of the equipment, thereby being beneficial to reducing the power consumption of the equipment and being especially suitable for equipment sensitive to the power consumption, such as battery-powered equipment.
(2) Under the power-off state, the control circuit is in the non-power state, so that the service life of the control circuit is prolonged, and the reliability of the equipment is improved. As long as the input power supply is not disconnected, the standby power supply and the control circuit in the conventional soft switching circuit are in the power-on working state, so that the working time of the part of the circuit is greatly prolonged, and the failure risk of the part of the circuit is increased. The working time of the soft switch control circuit in the invention is basically consistent with the working time of the equipment, and the equipment is in a non-working state when the power is off. Compared with a conventional soft switching circuit, the power-on working time is shortened, the electric stress action time is shortened, the reliability of the part of circuit is favorably improved, and the reliability of equipment is further improved.
Drawings
FIG. 1 is a schematic diagram of the operation of a conventional soft switch;
FIG. 2 is the power supply soft switch control circuit composition of the invention;
fig. 3 is a schematic diagram of a soft switching circuit of a dc power supply according to an example of the present invention.
Detailed Description
The technical solutions of the present invention are further described in detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the following.
As shown in fig. 2, a power supply circuit for supplying power without standby includes a main processing channel of a device power supply and a power supply soft switch control circuit;
the main processing channel of the equipment power supply comprises an input power supply filtering module, a power supply switch and a power supply conversion processing module;
the input power supply filtering module mainly realizes the function of an isolator, plays a role of bidirectional filtering, prevents external power supply interference from influencing an internal power supply and a circuit of the equipment, prevents various interferences in the equipment from entering an external public power supply signal through a power supply circuit, and meets the requirements on the electromagnetic compatibility of the equipment related to power supply;
the power switch is used as a power switch component of the equipment and realizes the on-off of the input power supply signal under the control of a switch control signal cg;
the power supply conversion processing module is an internal power supply processing part of the equipment and outputs main power supplies required by the equipment, such as +5V, +3.3V and the like;
the power supply soft switch control circuit comprises a coupling unit, a micro switch unit, an instant power supply unit, a power supply switching unit, a key action generating unit and a switch state generating unit;
the coupling unit outputs a low-voltage low-current signal V _ k meeting the requirement of a subsequent circuit for a subsequent related circuit unit to use by performing attenuation isolation processing on the filtered power input signal V _ inf; when the micro switch is in a release state, the coupling unit does not consume electric energy;
the microswitch is a switch control component of an equipment power supply and has two states of being pressed down to be switched on and being released to be switched off;
the instant power supply unit provides temporary power supply for the whole control circuit; when the microswitch is pressed to be in a closed state, the coupled power supply V _ k is connected to the instant power supply unit, and the instant power supply unit quickly generates and outputs a direct-current power supply Vc required by the control circuit; when the release microswitch is in an off state, the output of the instant power supply unit closes the external power supply after the set time; in the set time, the equipment power supply conversion processing module can be ensured to finish conversion processing and supply power to the equipment normally;
the power supply switching unit realizes seamless switching from the instantaneous power supply output power supply Vc to a certain power supply V _ s0 in the output of the power supply conversion processing module, and provides stable power supply for the switch state generating unit, so that the state of a switch control signal can be effectively controlled, and the power supply switch is kept stably controlled;
the key action generating unit generates a pulse signal ps under the trigger of the output power supply Vc of the instant power supply unit and timely reflects the pressing and releasing actions of the micro switch; in order to prevent misoperation and maintain control stability, the circuit outputs a corresponding pulse signal only after the microswitch is stably pressed for a certain time. After the micro switch is released for a certain time, the pulse signal disappears.
The switch state generating unit takes Vcc as a working power supply, generates and outputs a switch control signal cg under the trigger of pulses ps, and controls the action of a power switch: and the switch is switched on or off to realize the function of switching on or off the power supply of the equipment.
In a preferred embodiment, in order to prevent misoperation and maintain control stability, the circuit outputs a corresponding pulse signal after the microswitch K needs to be pressed stably for a certain time; after the microswitch K is released for a certain time, the pulse signal disappears.
In a preferred embodiment, the primary power supply required by the output device comprises +5V and/or + 3.3V.
In a preferred embodiment, as shown in fig. 3, the dc power source is switched and controlled as follows: the power switch is an MOS switch; the power supply soft switch control circuit comprises resistors R1, R2 and R3, a microswitch K, a capacitor C1, a voltage regulator tube V1, diodes V2 and V3 and a counter D1;
the resistor R1 is respectively connected with the power supply filtering output and the microswitch K, the microswitch K is respectively connected with the voltage regulator tube V1 and the resistor R2, and the anode of the voltage regulator tube V1 is grounded; the capacitor C1 and the resistor R3 form a parallel circuit, one end of the parallel circuit is connected with the resistor R2 and the cp end of the counter D1, and the other end of the parallel circuit is grounded;
the cathodes of the diodes V2 and V3 are connected together and connected to the Vcc end of the counter D1, the anode of the diode V2 is connected to the cathode of the stabilivolt V1, the anode of the diode V3 is connected to the power conversion processing module, and the counter Q0 is connected to the MOS switch.
The resistor R1 is used as a power supply coupling unit or a power supply coupling component, and after the microswitch K is pressed down, the voltage regulator tube V1 is used as an instant power supply unit to immediately form temporary power supply;
the temporary power supply supplies power to the switch state generating unit D1 through V2, and the Q0 end of D1 outputs 0 level to enable the MOS switch to be in a closed state;
the V2 and the V3 form a power supply switching unit, and when the equipment power supply conversion processing module supplies power normally, the power supply of the D1 is immediately switched to + 5V;
r2, C1 and R3 form a pulse forming circuit or a key action generating unit, a temporary power supply signal passes through the circuit and then forms a rising jump from 0 to 1 at the cp input of D1, the rising edge of the jump triggers D1, so that an output signal Vc at the Q0 end of D1 jumps from 0 level to 1 level, an MOS (metal oxide semiconductor) tube is controlled to be in a conducting state, a power supply of equipment is switched on, a power supply conversion processing module works normally, and the power supply starting function is realized;
after the micro switch K is released for a certain time, the temporary power supply disappears, and after a certain time, the cp end pulse signal of D1 is changed from 1 to 0, and the output of the Q0 end of D1 keeps 1 level unchanged, so that the power supply of the equipment is continuously kept in the starting working state;
when the micro switch K is pressed again, the cp end of the D1 generates an upper jump pulse again, so that the output signal Vc of the Q0 end of the D1 jumps from 1 to 0, the MOS switch is controlled to be in a closed state, and the power-off operation of the equipment is realized.
In the power-off state of the equipment, the power consumption of the circuit is 0; in the power-on working state of the device, the power consumption of the circuit is mainly D1, and the working current of the circuit is in milliampere level.
In a preferred embodiment, the circuit can also be used for ac switch control by adjusting the instantaneous power supply unit circuit. The AC power supply is switched on and off, the V1 of the DC power supply control circuit is changed into an AC rectification circuit, and the positive electrode of the V2 is connected to the output of the rectification circuit, so that the AC power supply is switched on and off. Namely, V1 in FIG. 3 is changed into an AC rectification circuit, and the positive pole of V2 is connected to the output of the rectification circuit, thus realizing the switch control of the AC power supply.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, it should be noted that any modifications, equivalents and improvements made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (4)
1. A power supply circuit for supplying power ad hoc, characterized by: the device comprises a main processing channel of a device power supply and a power supply soft switch control circuit;
the main processing channel of the equipment power supply comprises an input power supply filter, a power supply switch and a power supply conversion processing module;
the input power supply filtering mainly realizes the function of an isolator and plays a role of bidirectional filtering;
the power switch is used as a power switch component of the equipment and realizes the on-off of the input power supply signal under the control of a switch control signal cg;
the power supply conversion processing module is an internal power supply processing part of the equipment and outputs a main power supply required by the equipment;
the power supply soft switch control circuit comprises a coupling unit, a micro switch unit, an instant power supply unit, a power supply switching unit, a key action generating unit and a switch state generating unit;
the coupling unit outputs a low-voltage low-current signal V _ k meeting the requirement of a subsequent circuit for a subsequent related circuit unit to use by performing attenuation isolation processing on the filtered power input signal V _ inf; when the micro switch is in a release state, the coupling unit does not consume electric energy;
the microswitch is a switch control component of an equipment power supply and has two states of being pressed down to be switched on and being released to be switched off;
the instant power supply unit provides temporary power supply for the whole control circuit; when the microswitch is pressed to be in a closed state, the coupled power supply V _ k is connected to the instant power supply unit, and the instant power supply unit quickly generates and outputs a direct-current power supply Vc required by the control circuit; when the release microswitch is in an off state, the output of the instant power supply unit closes the external power supply after the set time; in the set time, the equipment power supply conversion processing module can be ensured to finish conversion processing and supply power to the equipment normally;
the power supply switching unit realizes seamless switching from the instantaneous power supply output power supply Vc to a certain power supply V _ s0 in the output of the power supply conversion processing module, and provides stable power supply for the switch state generating unit, so that the state of a switch control signal can be effectively controlled, and the power supply switch is kept stably controlled;
the key action generating unit generates a pulse signal ps under the trigger of the output power supply Vc of the instant power supply unit and timely reflects the pressing and releasing actions of the micro switch;
the switch state generating unit takes Vcc as a working power supply, generates and outputs a switch control signal cg under the trigger of pulses ps, and controls the action of a power switch: the switch is switched on or off to realize the function of turning on or off the power supply of the equipment;
the resistor R1 is used as the coupling unit, the microswitch K is used as the microswitch unit, the voltage regulator V1 is used as the instant power supply unit, the power supply switching unit is composed of V2 and V3, the key action generating unit is composed of R2, C1 and R3, and the counter D1 is used as the switch state generating unit;
the power switch is an MOS switch; the power supply soft switch control circuit comprises resistors R1, R2 and R3, a microswitch K, a capacitor C1, a voltage regulator tube V1, diodes V2 and V3 and a counter D1;
the resistor R1 is respectively connected with the power supply filtering output and the microswitch K, the microswitch K is respectively connected with the voltage regulator tube V1 and the resistor R2, and the anode of the voltage regulator tube V1 is grounded; the capacitor C1 and the resistor R3 form a parallel circuit, one end of the parallel circuit is connected with the resistor R2 and the cp end of the counter D1, and the other end of the parallel circuit is grounded;
the cathodes of the diodes V2 and V3 are connected together and connected to the Vcc end of the counter D1, the anode of the diode V2 is connected to the cathode of the stabilivolt V1, the anode of the diode V3 is connected to the power conversion processing module, and the counter Q0 is connected to the MOS switch.
2. A hands-free power supply circuit as claimed in claim 1, wherein: in order to prevent misoperation and keep control stability, the circuit outputs a corresponding pulse signal only after the microswitch K needs to be stably pressed for a certain time; after the microswitch K is released for a certain time, the pulse signal disappears.
3. A hands-free power supply circuit as claimed in claim 1, wherein: the main power supply required by the output device comprises +5V and/or + 3.3V.
4. A hands-free power supply circuit as claimed in claim 1, wherein: the V1 is changed into an alternating current rectifying circuit, and the positive electrode of the V2 is connected to the output of the rectifying circuit, so that the on-off control of an alternating current power supply is realized.
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| CN201910198542.7A CN109995222B (en) | 2019-03-15 | 2019-03-15 | Power supply circuit with abnormal standby power supply |
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| CN201910198542.7A CN109995222B (en) | 2019-03-15 | 2019-03-15 | Power supply circuit with abnormal standby power supply |
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| CN109995222A CN109995222A (en) | 2019-07-09 |
| CN109995222B true CN109995222B (en) | 2020-12-11 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101071978A (en) * | 2006-05-09 | 2007-11-14 | 罗姆股份有限公司 | Start-up circuit and start-up method |
| CN101873755A (en) * | 2009-04-24 | 2010-10-27 | 松下电工株式会社 | Discharge lamp ignition device, supply unit and ligthing paraphernalia |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006191741A (en) * | 2005-01-06 | 2006-07-20 | Sanken Electric Co Ltd | Dc converter |
| JP4923864B2 (en) * | 2006-08-28 | 2012-04-25 | サンケン電気株式会社 | Switching power supply |
| JP2008072830A (en) * | 2006-09-14 | 2008-03-27 | Yokogawa Electric Corp | Switching power unit |
| JP2011125132A (en) * | 2009-12-10 | 2011-06-23 | Yokogawa Electric Corp | Switching power supply |
| JP5099183B2 (en) * | 2010-07-13 | 2012-12-12 | サンケン電気株式会社 | Start-up circuit |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101071978A (en) * | 2006-05-09 | 2007-11-14 | 罗姆股份有限公司 | Start-up circuit and start-up method |
| CN101873755A (en) * | 2009-04-24 | 2010-10-27 | 松下电工株式会社 | Discharge lamp ignition device, supply unit and ligthing paraphernalia |
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