JPH0244876U - - Google Patents
Info
- Publication number
- JPH0244876U JPH0244876U JP12420488U JP12420488U JPH0244876U JP H0244876 U JPH0244876 U JP H0244876U JP 12420488 U JP12420488 U JP 12420488U JP 12420488 U JP12420488 U JP 12420488U JP H0244876 U JPH0244876 U JP H0244876U
- Authority
- JP
- Japan
- Prior art keywords
- overcurrent
- thyristor
- load
- turns
- magnetic contactor
- 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.)
- Granted
Links
- 238000001514 detection method Methods 0.000 claims description 2
- 230000003276 anti-hypertensive effect Effects 0.000 claims 1
- 238000002560 therapeutic procedure Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
Landscapes
- Protection Of Static Devices (AREA)
- Dc-Dc Converters (AREA)
Description
第１図は本考案の一実施例を示す回路図、第２
図は第１図における過電流発生時のタイムチヤー
ト、第３図は従来の回路図である。
２……パワートランジスタ、３……リアクトル
、５……負荷、６……平滑用コンデンサ、７……
サイリスタ、８……電磁接触器、９……過電流検
出回路、１０……ホール変流器。
Figure 1 is a circuit diagram showing one embodiment of the present invention, Figure 2 is a circuit diagram showing an embodiment of the present invention.
This figure is a time chart when an overcurrent occurs in FIG. 1, and FIG. 3 is a conventional circuit diagram. 2...Power transistor, 3...Reactor, 5...Load, 6...Smoothing capacitor, 7...
Thyristor, 8...Magnetic contactor, 9...Overcurrent detection circuit, 10...Hall current transformer.
Claims (1)
流率を制御するスイツチ動作によつて負荷に電圧
低下させた直流電流を供給する降圧チヨツパにお
いて、前記チヨツパ部に並列に設けたサイリスタ
及び電磁接触器と、前記直流電流の過電流検出時
に前記サイリスタをオン制御しかつ前記電磁接触
器のオン動作遅れ時間以上の期間で過電流解消ま
で該電磁接触器をオン制御する過電流検出回路と
を備えたことを特徴とする降圧チヨツパ。 In a step-down chopper that supplies a voltage-reduced DC current to a load by a switch operation that controls the conductivity of a chopper section provided between a DC power source and a load, a thyristor and an electromagnetic contact are provided in parallel with the chopper section. and an overcurrent detection circuit that turns on the thyristor when detecting an overcurrent of the direct current, and turns on the magnetic contactor for a period longer than the on-operation delay time of the magnetic contactor until the overcurrent is resolved. Antihypertensive therapy characterized by
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12420488U JPH073829Y2 (en) | 1988-09-22 | 1988-09-22 | Buck chopper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12420488U JPH073829Y2 (en) | 1988-09-22 | 1988-09-22 | Buck chopper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0244876U true JPH0244876U (en) | 1990-03-28 |
| JPH073829Y2 JPH073829Y2 (en) | 1995-01-30 |
Family
ID=31373732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12420488U Expired - Lifetime JPH073829Y2 (en) | 1988-09-22 | 1988-09-22 | Buck chopper |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH073829Y2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010279166A (en) * | 2009-05-28 | 2010-12-09 | Mitsubishi Electric Corp | Power converter |
| JP2011182519A (en) * | 2010-02-26 | 2011-09-15 | Mitsubishi Electric Corp | Power converting apparatus |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102627415B1 (en) * | 2021-06-01 | 2024-01-19 | (주)신아이엔지 | Uninterruptible Power Supply with independent bypass function |
-
1988
- 1988-09-22 JP JP12420488U patent/JPH073829Y2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010279166A (en) * | 2009-05-28 | 2010-12-09 | Mitsubishi Electric Corp | Power converter |
| JP2011182519A (en) * | 2010-02-26 | 2011-09-15 | Mitsubishi Electric Corp | Power converting apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH073829Y2 (en) | 1995-01-30 |