JPH0390316U - - Google Patents
Info
- Publication number
- JPH0390316U JPH0390316U JP15011989U JP15011989U JPH0390316U JP H0390316 U JPH0390316 U JP H0390316U JP 15011989 U JP15011989 U JP 15011989U JP 15011989 U JP15011989 U JP 15011989U JP H0390316 U JPH0390316 U JP H0390316U
- Authority
- JP
- Japan
- Prior art keywords
- input voltage
- resistor
- diagram showing
- power supply
- supply circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001514 detection method Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 16
Landscapes
- Continuous-Control Power Sources That Use Transistors (AREA)
Description
第１図は本考案の原理構成を示す図、第２図は
本考案に係る第１の実施例であるリレーによる抵
抗の切り換えの構成を示す図、第３図はシリーズ
・レギユレータおよび可変抵抗の入力電圧と消費
電力との関係を示す図、第４図は本考案に係る第
２の実施例であるトランジスタによる抵抗の切り
換えの構成を示す図、第５図は本考案に係る第３
の実施例であつて、第２の実施例の比較器にヒス
テリシス特性をもたせたトランジスタによる抵抗
の切り換えの構成を示す図、第６図は第５図の比
較器の入力と出力状態の関係を示す図、第７図は
第３の実施例のシリーズ・レギユレータの入力電
圧と消費電力との関係を示す図、第８図は本考案
に係る第４の実施例である二以上のリレーによる
抵抗の切り換えの構成を示す図、第９図は本考案
に係る第４の実施例によるシリーズ・レギユレー
タおよび可変抵抗の入力電圧と消費電力との関係
を示す図、第１０図は本考案に係る第５の実施例
である二以上のトランジスタによる抵抗の切り換
えの構成を示す図、第１１図は本考案に係る第６
の実施例であつて、第５の実施例の比較器にヒス
テリシス特性をもたせたトランジスタによる抵抗
の切り換えの構成を示す図、第１２図は本考案の
第６の実施例の各比較器のヒステリシス特性を示
す図、第１３図は本考案に係る第６の実施例のヒ
ステリシス特性を有する比較器を用いた場合のシ
リーズ・レギユータの消費電力を示す図、第１４
図は従来のシリーズ・レギユーレータを示す図、
第１５図は入力電圧および出力電圧の関係を示す
図、第１６図は従来の入力に抵抗を有するシリー
ズ・レギユレータの示す図、第１７図は従来の入
力電圧および消費電力の関係を示す図である。
図において、１……シリーズ・レギユレータ、
２……可変抵抗、３……入力電圧検出制御部、Ｖ
ｉ＝入力電圧、Ｖｉ′……シリーズ・レギユレー
タの入力電圧、Ｖｏ＝出力電圧。
Fig. 1 is a diagram showing the principle configuration of the present invention, Fig. 2 is a diagram showing the configuration of resistance switching using a relay, which is the first embodiment of the invention, and Fig. 3 is a diagram showing the configuration of a series regulator and a variable resistor. FIG. 4 is a diagram showing the relationship between input voltage and power consumption; FIG. 4 is a diagram showing the configuration of resistance switching using a transistor according to the second embodiment of the present invention; FIG.
FIG. 6 shows the relationship between the input and output states of the comparator in FIG. 5. 7 is a diagram showing the relationship between the input voltage and power consumption of the series regulator according to the third embodiment, and FIG. 8 is a diagram showing the relationship between the input voltage and power consumption of the series regulator according to the third embodiment, and FIG. 8 is a diagram showing the resistance by two or more relays according to the fourth embodiment of the invention. FIG. 9 is a diagram showing the relationship between the input voltage and power consumption of the series regulator and variable resistor according to the fourth embodiment of the present invention, and FIG. FIG. 11 is a diagram showing the configuration of resistance switching using two or more transistors, which is an embodiment of No. 5, and FIG.
FIG. 12 is a diagram showing the configuration of resistor switching using a transistor that provides a hysteresis characteristic to the comparator of the fifth embodiment, and FIG. 12 shows the hysteresis of each comparator of the sixth embodiment of the present invention. Figure 13 is a diagram showing the characteristics, and Figure 14 is a diagram showing the power consumption of the series regulator when using a comparator with hysteresis characteristics according to the sixth embodiment of the present invention.
The figure shows a conventional series regulator,
Fig. 15 is a diagram showing the relationship between input voltage and output voltage, Fig. 16 is a diagram showing a conventional series regulator having a resistor at the input, and Fig. 17 is a diagram showing the conventional relationship between input voltage and power consumption. be. In the figure, 1...series regulator,
2...Variable resistor, 3...Input voltage detection control section, V
i = input voltage, V i '...input voltage of series regulator, V o = output voltage.
Claims (1)
ギユレータ１の入力に抵抗を有する直流電源回路
において、 前記抵抗を可変抵抗２とし、 前記入力電圧Ｖｉの高低に応じて、前記可変抵
抗２をそれぞれ高低変化させる入力電圧検出制御
部３を備えることを特徴とする直流電源回路。 ２ 前記入力電圧検出制御部３は、前記入力電圧
Ｖｉを高低に識別するしきい値に対してヒステリ
シス特性を有する電圧比較器からなる請求項２記
載の直流電源回路。[Claims for Utility Model Registration] 1. In a DC power supply circuit having a resistor at the input of a series regulator 1 that drops to a DC input voltage V i , the resistor is a variable resistor 2, and the voltage V i is adjusted according to the height of the input voltage V i . A DC power supply circuit comprising an input voltage detection control section 3 that changes the height of the variable resistor 2. 2. The DC power supply circuit according to claim 2, wherein the input voltage detection control section 3 comprises a voltage comparator having hysteresis characteristics with respect to a threshold value that distinguishes the input voltage V i as high or low.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15011989U JPH0390316U (en) | 1989-12-28 | 1989-12-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15011989U JPH0390316U (en) | 1989-12-28 | 1989-12-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0390316U true JPH0390316U (en) | 1991-09-13 |
Family
ID=31696485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15011989U Pending JPH0390316U (en) | 1989-12-28 | 1989-12-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0390316U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012185709A (en) * | 2011-03-07 | 2012-09-27 | Denso Corp | Electric power supply |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6251416B2 (en) * | 1983-10-05 | 1987-10-29 | Tabai Esupetsuku Kk | |
| JPS63200214A (en) * | 1987-02-14 | 1988-08-18 | Nec Corp | Voltage stabilizing power supply circuit |
-
1989
- 1989-12-28 JP JP15011989U patent/JPH0390316U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6251416B2 (en) * | 1983-10-05 | 1987-10-29 | Tabai Esupetsuku Kk | |
| JPS63200214A (en) * | 1987-02-14 | 1988-08-18 | Nec Corp | Voltage stabilizing power supply circuit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012185709A (en) * | 2011-03-07 | 2012-09-27 | Denso Corp | Electric power supply |
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