JP2012074605A5 - Capacitor switching circuit, light emitting circuit, projector and capacitor switching method - Google Patents
Capacitor switching circuit, light emitting circuit, projector and capacitor switching method Download PDFInfo
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- JP2012074605A5 JP2012074605A5 JP2010219453A JP2010219453A JP2012074605A5 JP 2012074605 A5 JP2012074605 A5 JP 2012074605A5 JP 2010219453 A JP2010219453 A JP 2010219453A JP 2010219453 A JP2010219453 A JP 2010219453A JP 2012074605 A5 JP2012074605 A5 JP 2012074605A5
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Description
本発明は、コンデンサ切替回路及び発光回路、プロジェクタ並びにコンデンサ切替方法に関し、特に、電位を維持したままコンデンサの切り替えが可能になる技術に関する。
The present invention relates to a capacitor switching circuit, a light emitting circuit, a projector, and a capacitor switching method, and more particularly to a technique that enables switching of a capacitor while maintaining a potential.
本発明の一態様にかかるコンデンサ切替回路は、
第１の電圧と第２の電圧とが交互に供給される電力供給のラインに接続されるコンデンサ切替回路であって、
前記電力供給のラインに正極端が接続される第１コンデンサと、
前記電力供給のラインに正極端が接続される第２コンデンサと、
前記第１コンデンサの負極端と基準電位のラインとの間に接続される第１スイッチング素子と、
前記第２コンデンサの負極端と前記基準電位のラインとの間に接続される第２スイッチング素子と、
前記電力供給のラインに前記第１の電圧が供給される期間に、前記第１スイッチング素子を導通させ、且つ、前記電力供給のラインに前記第２の電圧が供給される期間に、前記第１スイッチング素子を遮断させる第１コンデンサ接続制御回路と、
前記電力供給のラインに前記第２の電圧が供給される期間に、前記第２スイッチング素子を導通させ、且つ、前記電力供給のラインに前記第１の電圧が供給される期間に、前記第２スイッチング素子を遮断させる第２コンデンサ接続制御回路と、
前記第１の電圧が前記第２の電圧よりも高い場合、前記電力供給のラインに供給される電圧が前記第１の電圧から前記第２の電圧に切り替えられるタイミングで、前記第１スイッチング素子の遮断状態を維持する遮断状態維持回路と、
を備えることを特徴とする。
A capacitor switching circuit according to one aspect of the present invention is provided.
A capacitor switching circuit connected to a power supply line to which a first voltage and a second voltage are alternately supplied,
A first capacitor Ru positive electrode is connected to the power supply line,
A second capacitor Ru positive electrode is connected to the power supply line,
A first switching element connected between a negative electrode end of the first capacitor and a reference potential line;
A second switching element connected between the negative electrode end of the second capacitor and the reference potential line;
The first switching element is turned on during a period in which the first voltage is supplied to the power supply line, and the first voltage is supplied in the period in which the second voltage is supplied to the power supply line. A first capacitor connection control circuit for interrupting the switching element;
In a period in which the second voltage is supplied to the power supply line, the second switching element is turned on, and in a period in which the first voltage is supplied to the power supply line. A second capacitor connection control circuit for shutting off the switching element;
When the first voltage is higher than the second voltage, the voltage supplied to the power supply line is switched from the first voltage to the second voltage at the timing of the first switching element. An interrupted state maintaining circuit for maintaining the interrupted state;
It is characterized by providing.
上記コンデンサ切替回路において、
前記遮断状態維持回路は、
前記第１スイッチング素子の制御端子を駆動する制御信号を前記基準電位に対するダイオードシンクとハイインピーダンスが組み合わされた出力に変換する変換回路と、
前記第１スイッチング素子の前記制御端子と前記第１コンデンサの負極端とを接続する抵抗と、
を備えていることが望ましい。
上記コンデンサ切替回路において、
前記遮断状態維持回路は、
前記第１コンデンサの負極端と、前記第１スイッチング素子の前記制御端子と、の間を所定期間短絡する短絡回路、
をさらに備えていることが望ましい。
上記コンデンサ切替回路において、
前記第１スイッチング素子は、２個のＦＥＴが直列に接続されたものであることが望ましい。
また、本発明の他の態様にかかる発光装置は、
前記コンデンサ切替回路と、
前記電力供給のラインの電圧により駆動される発光素子と、
を備えることを特徴とする。
さらに、本発明の他の態様にかかるプロジェクタは、
前記発光装置と、
前記発光装置より発光される光により画像を投影させる投影手段と、
を備えることを特徴とする。
In the above capacitor switching circuit,
The interruption state maintaining circuit is
A conversion circuit for converting a control signal for driving a control terminal of the first switching element into an output in which a diode sink with respect to the reference potential and a high impedance are combined;
A resistor connecting the control terminal of the first switching element and a negative terminal of the first capacitor;
It is desirable to have.
In the capacitor switching circuit,
The interruption state maintaining circuit is
Negative and, before Symbol the control terminal and the short circuit for short-circuiting a predetermined period between the first switching element of said first capacitor,
It is desirable to further include.
In the above capacitor switching circuit,
The first switching element is preferably one in which two FETs are connected in series.
In addition, a light emitting device according to another aspect of the present invention includes:
The capacitor switching circuit;
A light emitting element driven by the voltage of the power supply line;
It is characterized by providing.
Furthermore, a projector according to another aspect of the present invention includes:
The light emitting device;
Projection means for projecting an image with light emitted from the light emitting device;
It is characterized by providing.
本発明の他の態様にかかるコンデンサ切替方法は、
第１の電圧と第２の電圧とが交互に供給される電力供給のラインに接続されるコンデンサ切替回路のコンデンサ切替方法であって、
前記コンデンサ切替回路は、
前記電力供給のラインに正極端が接続される第１コンデンサと、
前記電力供給のラインに正極端が接続される第２コンデンサと、
前記第１コンデンサの負極端と基準電位のラインとの間に接続される第１スイッチング素子と、
前記第２コンデンサの負極端と前記基準電位のラインとの間に接続される第２スイッチング素子と、
を含み、
前記電力供給のラインに前記第１の電圧が供給される期間に、前記第１スイッチング素子を導通させ、且つ、前記電力供給のラインに前記第２の電圧が供給される期間に、前記第１スイッチング素子を遮断させる第１コンデンサ接続制御ステップと、
前記電力供給のラインに前記第２の電圧が供給される期間に、前記第２スイッチング素子を導通させ、且つ、前記電力供給のラインに前記第１の電圧が供給される期間に、前記第２スイッチング素子を遮断させる第２コンデンサ接続制御ステップと、
前記第１の電圧が前記第２の電圧よりも高い場合、前記電力供給のラインに供給される電圧が前記第１の電圧から前記第２の電圧に切り替えられるタイミングで、前記第１スイッチング素子の遮断状態を維持する遮断状態維持ステップと、
を含むことを特徴とする。
The capacitor switching method according to another aspect of the present invention includes:
A capacitor switching method of a capacitor switching circuit connected to a power supply line to which a first voltage and a second voltage are alternately supplied,
The capacitor switching circuit is
A first capacitor Ru positive electrode is connected to the power supply line,
A second capacitor Ru positive electrode is connected to the power supply line,
A first switching element connected between a negative electrode end of the first capacitor and a reference potential line;
A second switching element connected between the negative electrode end of the second capacitor and the reference potential line ;
Including
The first switching element is turned on during a period in which the first voltage is supplied to the power supply line, and the first voltage is supplied in the period in which the second voltage is supplied to the power supply line. A first capacitor connection control step for shutting off the switching element;
In a period in which the second voltage is supplied to the power supply line, the second switching element is turned on, and in a period in which the first voltage is supplied to the power supply line. A second capacitor connection control step for shutting off the switching element;
When the first voltage is higher than the second voltage, the voltage supplied to the power supply line is switched from the first voltage to the second voltage at the timing of the first switching element. A block state maintaining step for maintaining the block state;
It is characterized by including.
Claims (7)
前記電力供給のラインに正極端が接続される第１コンデンサと、
前記電力供給のラインに正極端が接続される第２コンデンサと、
前記第１コンデンサの負極端と基準電位のラインとの間に接続される第１スイッチング素子と、
前記第２コンデンサの負極端と前記基準電位のラインとの間に接続される第２スイッチング素子と、
前記電力供給のラインに前記第１の電圧が供給される期間に、前記第１スイッチング素子を導通させ、且つ、前記電力供給のラインに前記第２の電圧が供給される期間に、前記第１スイッチング素子を遮断させる第１コンデンサ接続制御回路と、
前記電力供給のラインに前記第２の電圧が供給される期間に、前記第２スイッチング素子を導通させ、且つ、前記電力供給のラインに前記第１の電圧が供給される期間に、前記第２スイッチング素子を遮断させる第２コンデンサ接続制御回路と、
前記第１の電圧が前記第２の電圧よりも高い場合、前記電力供給のラインに供給される電圧が前記第１の電圧から前記第２の電圧に切り替えられるタイミングで、前記第１スイッチング素子の遮断状態を維持する遮断状態維持回路と、
を備えるコンデンサ切替回路。 A capacitor switching circuit connected to a power supply line to which a first voltage and a second voltage are alternately supplied,
A first capacitor Ru positive electrode is connected to the power supply line,
A second capacitor Ru positive electrode is connected to the power supply line,
A first switching element connected between a negative electrode end of the first capacitor and a reference potential line;
A second switching element connected between the negative electrode end of the second capacitor and the reference potential line;
The first switching element is turned on during a period in which the first voltage is supplied to the power supply line, and the first voltage is supplied in the period in which the second voltage is supplied to the power supply line. A first capacitor connection control circuit for interrupting the switching element;
In a period in which the second voltage is supplied to the power supply line, the second switching element is turned on, and in a period in which the first voltage is supplied to the power supply line. A second capacitor connection control circuit for shutting off the switching element;
When the first voltage is higher than the second voltage, the voltage supplied to the power supply line is switched from the first voltage to the second voltage at the timing of the first switching element. An interrupted state maintaining circuit for maintaining the interrupted state;
A capacitor switching circuit comprising:
前記第１スイッチング素子の制御端子を駆動する制御信号を前記基準電位に対するダイオードシンクとハイインピーダンスが組み合わされた出力に変換する変換回路と、A conversion circuit for converting a control signal for driving a control terminal of the first switching element into an output in which a diode sink with respect to the reference potential and a high impedance are combined;
前記第１スイッチング素子の前記制御端子と前記第１コンデンサの負極端とを接続する抵抗と、A resistor connecting the control terminal of the first switching element and a negative terminal of the first capacitor;
を備える請求項１に記載のコンデンサ切替回路。The capacitor switching circuit according to claim 1, comprising:
前記第１コンデンサの負極端と、前記第１スイッチング素子の前記制御端子と、の間を所定期間短絡する短絡回路、
をさらに備える請求項２に記載のコンデンサ切替回路。 The interruption state maintaining circuit is
Negative and, before Symbol the control terminal and the short circuit for short-circuiting a predetermined period between the first switching element of said first capacitor,
The capacitor switching circuit according to claim 2 , further comprising:
前記電力供給のラインの電圧により駆動される発光素子と、A light emitting element driven by the voltage of the power supply line;
備える発光装置。A light emitting device provided.
前記発光装置より発光される光により画像を投影させる投影手段と、Projection means for projecting an image with light emitted from the light emitting device;
備えるプロジェクタ。A projector provided.
前記コンデンサ切替回路は、
前記電力供給のラインに正極端が接続される第１コンデンサと、
前記電力供給のラインに正極端が接続される第２コンデンサと、
前記第１コンデンサの負極端と基準電位のラインとの間に接続される第１スイッチング素子と、
前記第２コンデンサの負極端と前記基準電位のラインとの間に接続される第２スイッチング素子と、
を含み、
前記電力供給のラインに前記第１の電圧が供給される期間に、前記第１スイッチング素子を導通させ、且つ、前記電力供給のラインに前記第２の電圧が供給される期間に、前記第１スイッチング素子を遮断させる第１コンデンサ接続制御ステップと、
前記電力供給のラインに前記第２の電圧が供給される期間に、前記第２スイッチング素子を導通させ、且つ、前記電力供給のラインに前記第１の電圧が供給される期間に、前記第２スイッチング素子を遮断させる第２コンデンサ接続制御ステップと、
前記第１の電圧が前記第２の電圧よりも高い場合、前記電力供給のラインに供給される電圧が前記第１の電圧から前記第２の電圧に切り替えられるタイミングで、前記第１スイッチング素子の遮断状態を維持する遮断状態維持ステップと、
を含むコンデンサ切替方法。 A capacitor switching method of a capacitor switching circuit connected to a power supply line to which a first voltage and a second voltage are alternately supplied,
The capacitor switching circuit is
A first capacitor Ru positive electrode is connected to the power supply line,
A second capacitor Ru positive electrode is connected to the power supply line,
A first switching element connected between a negative electrode end of the first capacitor and a reference potential line;
A second switching element connected between the negative electrode end of the second capacitor and the reference potential line ;
Including
The first switching element is turned on during a period in which the first voltage is supplied to the power supply line, and the first voltage is supplied in the period in which the second voltage is supplied to the power supply line. A first capacitor connection control step for shutting off the switching element;
In a period in which the second voltage is supplied to the power supply line, the second switching element is turned on, and in a period in which the first voltage is supplied to the power supply line. A second capacitor connection control step for shutting off the switching element;
When the first voltage is higher than the second voltage, the voltage supplied to the power supply line is switched from the first voltage to the second voltage at the timing of the first switching element. A block state maintaining step for maintaining the block state;
Switching method including capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010219453A JP5648400B2 (en) | 2010-09-29 | 2010-09-29 | Capacitor switching circuit, light emitting circuit, projector and capacitor switching method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010219453A JP5648400B2 (en) | 2010-09-29 | 2010-09-29 | Capacitor switching circuit, light emitting circuit, projector and capacitor switching method |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2012074605A JP2012074605A (en) | 2012-04-12 |
| JP2012074605A5 true JP2012074605A5 (en) | 2013-11-14 |
| JP5648400B2 JP5648400B2 (en) | 2015-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| JP (1) | JP5648400B2 (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4595867B2 (en) * | 2006-03-31 | 2010-12-08 | カシオ計算機株式会社 | Light emitting element driving apparatus, light emitting element driving method, and projector |
| EP1898676A1 (en) * | 2006-09-06 | 2008-03-12 | THOMSON Licensing | Display apparatus |
| WO2009060400A1 (en) * | 2007-11-07 | 2009-05-14 | Koninklijke Philips Electronics N.V. | Power supply circuit |
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