JPH0283686U - - Google Patents
Info
- Publication number
- JPH0283686U JPH0283686U JP16353088U JP16353088U JPH0283686U JP H0283686 U JPH0283686 U JP H0283686U JP 16353088 U JP16353088 U JP 16353088U JP 16353088 U JP16353088 U JP 16353088U JP H0283686 U JPH0283686 U JP H0283686U
- Authority
- JP
- Japan
- Prior art keywords
- resistor
- transistor
- voltage
- base
- capacitor
- 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
- 239000003990 capacitor Substances 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 2
- 230000010356 wave oscillation Effects 0.000 description 1
Landscapes
- Dc-Dc Converters (AREA)
Description
第１図は本考案の一実施例回路構成図、第２図
は従来の回路構成を示す図である。
２：トランジスタ、３：変圧器、４，５：ダイ
オード、６，７：コンデンサ、８，９：出力端子
、１０：可変抵抗器、１１：電圧比較増幅器、１
２：基準電圧源、１３：三角波発振回路、１４：
３入力電圧比較増幅器、１５：ゲート回路、１６
：トランジスタ、１７，１８：抵抗器、１９：ダ
イオード、２０，２１：抵抗器、２２：トランジ
スタ、２３：抵抗器、２４：コンデンサ、２５，
２６：抵抗器。
FIG. 1 is a circuit configuration diagram of an embodiment of the present invention, and FIG. 2 is a diagram showing a conventional circuit configuration. 2: Transistor, 3: Transformer, 4, 5: Diode, 6, 7: Capacitor, 8, 9: Output terminal, 10: Variable resistor, 11: Voltage comparison amplifier, 1
2: Reference voltage source, 13: Triangular wave oscillation circuit, 14:
3-input voltage comparison amplifier, 15: Gate circuit, 16
: Transistor, 17, 18: Resistor, 19: Diode, 20, 21: Resistor, 22: Transistor, 23: Resistor, 24: Capacitor, 25,
26: Resistor.
Claims (1)
路において、出力電圧を抵抗器を介して分圧し、
その分圧点をダイオードと抵抗器の直列接続回路
を介して、第１のトランジスタのベースに接続し
、このコレクタを出力電圧と基準とする電圧を比
較する電圧比較増幅回路の一つの入力端子に接続
し、上記第１のトランジスタのベースと第２のト
ランジスタのコレクタを接続し、該第１、第２の
トランジスタのエミツタを電源入力端子に接続し
、上記第２のトランジスタのベースは抵抗器を介
して、コンデンサに接続し、該コンデンサの他端
は所定電圧源に接続し、且つそのコンデンサに並
列に抵坑器を接続し、上記第２のトランジスタベ
ースから抵抗器を介して接続した側のコンデンサ
端子は、少なくとも一つの抵坑器を介して、電源
入力端子に接続した構成の保護回路系を有するこ
とを特徴とする定電圧電源回路。 In a switching regulator type constant voltage power supply circuit, the output voltage is divided through resistors,
The voltage dividing point is connected to the base of the first transistor through a series connection circuit of a diode and a resistor, and the collector is connected to one input terminal of a voltage comparison amplifier circuit that compares the output voltage and a reference voltage. The base of the first transistor is connected to the collector of the second transistor, the emitters of the first and second transistors are connected to a power input terminal, and the base of the second transistor is connected to a resistor. The other end of the capacitor is connected to a predetermined voltage source, and a resistor is connected in parallel to the capacitor, and the side connected from the second transistor base through the resistor is A constant voltage power supply circuit characterized in that the capacitor terminal has a protection circuit system configured to be connected to a power supply input terminal via at least one resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16353088U JPH0283686U (en) | 1988-12-19 | 1988-12-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16353088U JPH0283686U (en) | 1988-12-19 | 1988-12-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0283686U true JPH0283686U (en) | 1990-06-28 |
Family
ID=31448333
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16353088U Pending JPH0283686U (en) | 1988-12-19 | 1988-12-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0283686U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7296748B2 (en) | 2002-01-11 | 2007-11-20 | Metrologic Instruments, Inc. | Bioptical laser scanning system providing 360° of omnidirectional bar code symbol scanning coverage at point of sale station |
| US7314176B2 (en) | 2002-01-11 | 2008-01-01 | Metrologic Instruments, Inc. | Method of generating a complex laser scanning pattern from a bioptical laser scanning system for providing 360° of omnidirectional bar code symbol scanning coverage at a point of sale station |
| US7374094B2 (en) | 2002-01-11 | 2008-05-20 | Metrologic Instruments, Inc. | Bioptical laser scanning system for providing six-sided omnidirectional bar code symbol scanning coverage at a point of sale station |
-
1988
- 1988-12-19 JP JP16353088U patent/JPH0283686U/ja active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7341192B2 (en) | 2000-04-18 | 2008-03-11 | Metrologic Instruments, Inc. | Method of generating a complex laser scanning pattern from a bioptical laser scanning system for providing 360° of omnidirectional bar code symbol scanning coverage at a point of sale station |
| US7296748B2 (en) | 2002-01-11 | 2007-11-20 | Metrologic Instruments, Inc. | Bioptical laser scanning system providing 360° of omnidirectional bar code symbol scanning coverage at point of sale station |
| US7314176B2 (en) | 2002-01-11 | 2008-01-01 | Metrologic Instruments, Inc. | Method of generating a complex laser scanning pattern from a bioptical laser scanning system for providing 360° of omnidirectional bar code symbol scanning coverage at a point of sale station |
| US7374094B2 (en) | 2002-01-11 | 2008-05-20 | Metrologic Instruments, Inc. | Bioptical laser scanning system for providing six-sided omnidirectional bar code symbol scanning coverage at a point of sale station |
| US7422156B2 (en) | 2002-01-11 | 2008-09-09 | Metrologic Instruments, Inc. | Bioptical laser scanning system for providing six-sided 360-degree omnidirectional bar code symbol scanning coverage at a point of sale station |