JP2019037034A - 電源装置および記録装置 - Google Patents
電源装置および記録装置 Download PDFInfo
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
- G05F1/56—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices
- G05F1/565—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices sensing a condition of the system or its load in addition to means responsive to deviations in the output of the system, e.g. current, voltage, power factor
- G05F1/569—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices sensing a condition of the system or its load in addition to means responsive to deviations in the output of the system, e.g. current, voltage, power factor for protection
- G05F1/571—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices sensing a condition of the system or its load in addition to means responsive to deviations in the output of the system, e.g. current, voltage, power factor for protection with overvoltage detector
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/015—Ink jet characterised by the jet generation process
- B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
- B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
- B41J2/04501—Control methods or devices therefor, e.g. driver circuits, control circuits
- B41J2/0457—Power supply level being detected or varied
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/015—Ink jet characterised by the jet generation process
- B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
- B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
- B41J2/04501—Control methods or devices therefor, e.g. driver circuits, control circuits
- B41J2/04548—Details of power line section of control circuit
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/015—Ink jet characterised by the jet generation process
- B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
- B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
- B41J2/04501—Control methods or devices therefor, e.g. driver circuits, control circuits
- B41J2/04586—Control methods or devices therefor, e.g. driver circuits, control circuits controlling heads of a type not covered by groups B41J2/04575 - B41J2/04585, or of an undefined type
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
- H02H9/045—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage adapted to a particular application and not provided for elsewhere
- H02H9/046—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage adapted to a particular application and not provided for elsewhere responsive to excess voltage appearing at terminals of integrated circuits
-
- 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
- H02M1/32—Means for protecting converters other than automatic disconnection
-
- 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
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33507—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters
- H02M3/33523—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters with galvanic isolation between input and output of both the power stage and the feedback loop
-
- 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
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
-
- 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
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/3353—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having at least two simultaneously operating switches on the input side, e.g. "double forward" or "double (switched) flyback" converter
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Automation & Control Theory (AREA)
- Dc-Dc Converters (AREA)
- Accessory Devices And Overall Control Thereof (AREA)
- Protection Of Static Devices (AREA)
Abstract
Description
図3は、本実施形態における記録装置100の電源構成例を示す図である。本実施形態の電源構成は、比較例の電源構成(図2)に抵抗227が追加された電源構成であり、図3においてこの抵抗227は点線で囲って明示されている。以下、本実施形態の電源構成について、図2で説明した比較例の電源構成(以下、「比較構成」と記す)との相違点を中心に説明する。なお、本実施形態の説明において、比較技術と同一の構成については同一符号を付し、比較技術と共通する部分については説明を簡略化ないし省略して説明する。
図6(a)は、実施形態2における電源構成の一部を抜粋した図である。本実施形態の電源構成は、実施形態1の電源構成にツェナーダイオードZD2が追加された電源構成であり、図6(a)においてこのツェナーダイオードZD2は点線で囲って明示されている。また、図6(b)は、縦軸を電圧、横軸を時間としたグラフであり、図6(a)の電源構成において、2次側の出力電圧Voutと、1次側の整流電圧Vauxと、Vcc電圧との関係例を表している。
出力電圧Voutが正常範囲内である場合、Vcc電圧は、制御IC205は電源の動作を停止する規定電圧Vovp未満であることが求められる。ここで、出力電圧Voutと、整流電圧Vauxと、トランスの2次側巻線数Nsと、補助巻線数Naとの関係は以下の(式9)に示される通りである。
図6(a)の電源構成において、制御IC205が動作可能な最低Vcc電圧をVuvloとすると、ツェナー電圧VZ1は、このVuvloにNPNトランジスタ211のベース・エミッタ間電圧Vebを加えた値よりも大きくなることが要求される。
ツェナーダイオードZD2が導通した場合、R1は、R1を流れる電流によってNPNトランジスタ211のベース電位を昇圧させる。このとき、ツェナーダイオードZD2の電圧は許容内となる値が選択される。また、R2はNPNトランジスタ211を動作させるために設けられている。ツェナーダイオードZD2の導通前(図6(b)における期間(1))において、R1と、R2と、VZ1と、Vebと、Vovpとの関係は以下の(式14)に示される通りである。
図7(a)は、実施形態3における電源構成の一部を抜粋した図である。本実施形態の電源構成は、実施形態2の電源構成(図6(a))からZD2が削除され、PNPトランジスタ701と、抵抗702と、ツェナーダイオードZD3とが追加された電源構成である。図7(a)において、抵抗212と、PNPトランジスタ701と、抵抗702と、ツェナーダイオードZD3とは点線で囲って明示されている。PNPトランジスタ701のエミッタは整流電圧Vauxに接続されており、PNPトランジスタ701のコレクタはNPNトランジスタ211のベースに接続されている。PNPトランジスタ701のベースは抵抗702とツェナーダイオードZD3とを介してグラウンドに接続されている。また、図7(b)は、縦軸を電圧、横軸を時間としたグラフであり、図7(a)の電源構成において、2次側の出力電圧Voutと、1次側の整流電圧Vauxと、Vcc電圧との関係例を表している。
なお、上述の実施形態1〜3において、各トランジスタはバイポーラトランジスタである例を説明しているが、電源に適用されるトランジスタはバイポーラトランジスタに限られない。例えば、電界効果型トランジスタを本実施形態の電源に適用することができる。
Claims (7)
- 外部からの制御信号に基づいて出力電圧Voutを切替可能な電源装置であって、
Vcc端子に印加される電圧が規定電圧Vovpよりも大きい場合、前記電源装置からの出力を停止するように制御する制御手段を有し、
前記Vcc端子はレギュレータを介してトランスの1次側の補助巻線に接続され、通常動作においては、前記制御手段は前記Vcc端子に供給される電力に基づいて動作し、
前記レギュレータに含まれるNPNトランジスタのベースは、第1の抵抗R1と、第1のツェナーダイオードZD1とを介してグラウンドに接続され、
前記NPNトランジスタのコレクタとベースとの間に第2の抵抗R2が設けられ、
前記補助巻線からの出力を整流した整流電圧をVaux、前記電源装置からの出力が停止される電圧に前記出力電圧Voutが到達したときの整流電圧VauxをVauxer、前記第1のツェナーダイオードZD1における電圧をVZ1、前記NPNトランジスタにおけるエミッタとベースとの間の電圧をVebとした場合、各値は以下の式(1)に示される関係を有する
ことを特徴とする電源装置。
- 前記NPNトランジスタのコレクタとベースとの間に、さらにPNPトランジスタが前記第2の抵抗R2と並列に設けられ、
前記PNPトランジスタのエミッタは前記NPNトランジスタのコレクタに接続され、前記PNPトランジスタのコレクタは前記NPNトランジスタのベースに接続され、前記PNPトランジスタのベースは第3の抵抗を介して該PNPトランジスタのエミッタに接続され、さらに、前記PNPトランジスタのベースは第4の抵抗と、第3のツェナーダイオードZD3とを介してグラウンドに接続され、
前記第3のツェナーダイオードZD3における電圧をVZ3とした場合、前記電圧VZ3は以下の式(3)を満たすことを特徴とする請求項1に記載の電源装置。
- 外部からの制御信号に基づいて出力電圧Voutを切替可能な電源装置であって、
Vcc端子に印加される電圧が規定電圧Vovpよりも大きい場合、前記電源装置からの出力を停止するように制御する制御手段を有し、
前記Vcc端子はレギュレータを介してトランスの1次側の補助巻線に接続され、通常動作においては、前記制御手段は前記Vcc端子に供給される電力に基づいて動作し、
前記レギュレータに含まれるNPNトランジスタのベースは、第1の抵抗R1と、第1のツェナーダイオードZD1とを介してグラウンドに接続され、
前記NPNトランジスタのコレクタとベースとの間に第2の抵抗R2が設けられていることを特徴とする電源装置。 - 前記NPNトランジスタのコレクタとベースとの間に、さらに第2のツェナーダイオードZD2が前記第2の抵抗R2と並列に設けられていることを特徴とする請求項4に記載の電源装置。
- 前記NPNトランジスタのコレクタとベースとの間に、さらにPNPトランジスタが前記第2の抵抗R2と並列に設けられ
前記PNPトランジスタのエミッタは前記NPNトランジスタのコレクタに接続され、前記PNPトランジスタのコレクタは前記NPNトランジスタのベースに接続され、前記PNPトランジスタのベースは第3の抵抗を介して該PNPトランジスタのエミッタに接続され、さらに、前記PNPトランジスタのベースは第4の抵抗と、第3のツェナーダイオードZD3とを介してグラウンドに接続されていることを特徴とする請求項1に記載の電源装置。 - 請求項1乃至6のいずれか1項に記載の電源装置と、
被記録媒体へ記録を行う記録手段と、
を備える記録装置。
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JP2017155750A JP7182859B2 (ja) | 2017-08-10 | 2017-08-10 | 電源装置および記録装置 |
US16/047,693 US10379554B2 (en) | 2017-08-10 | 2018-07-27 | Power supply apparatus and printing apparatus |
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JP2005352683A (ja) * | 2004-06-09 | 2005-12-22 | Pioneer Electronic Corp | 電源装置及び電源制御方法 |
JP2008067580A (ja) * | 2006-09-11 | 2008-03-21 | Sony Corp | スイッチング電源装置 |
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JP5137121B2 (ja) | 2008-02-18 | 2013-02-06 | ニチコン株式会社 | スイッチング電源装置 |
US8814327B2 (en) | 2011-07-01 | 2014-08-26 | Canon Kabushiki Kaisha | Power supply apparatus and printing apparatus |
US20150003118A1 (en) * | 2013-06-27 | 2015-01-01 | Fairchild Korea Semiconductor Ltd. | Start-up circuit, switch control circuit having the start-up circuit and power supply device having the switch control circuit |
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JP2005352683A (ja) * | 2004-06-09 | 2005-12-22 | Pioneer Electronic Corp | 電源装置及び電源制御方法 |
JP2008067580A (ja) * | 2006-09-11 | 2008-03-21 | Sony Corp | スイッチング電源装置 |
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US20190050010A1 (en) | 2019-02-14 |
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