JPS61172311U - - Google Patents
Info
- Publication number
- JPS61172311U JPS61172311U JP5671885U JP5671885U JPS61172311U JP S61172311 U JPS61172311 U JP S61172311U JP 5671885 U JP5671885 U JP 5671885U JP 5671885 U JP5671885 U JP 5671885U JP S61172311 U JPS61172311 U JP S61172311U
- Authority
- JP
- Japan
- Prior art keywords
- time constant
- switching element
- semiconductor switching
- constant circuit
- time
- 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
- 230000002265 prevention Effects 0.000 claims description 3
- 239000003990 capacitor Substances 0.000 claims description 2
- 239000004065 semiconductor Substances 0.000 claims 5
- 238000010586 diagram Methods 0.000 description 4
Description
第１図は本考案になる雑音防止回路の一実施例
を示す回路系統図、第２図は本考案になる雑音防
止回路の時間対負荷電流特性図、第３図は従来の
負荷駆動回路の時間対負荷電流特性図である。
１……電源端子、２……トランジスタ、３……
開閉成スイツチ、４……負荷、Ｃ……コンデンサ
、Ｒ１……第１の抵抗、Ｒ２……第２の抵抗。
Fig. 1 is a circuit system diagram showing one embodiment of the noise prevention circuit of the present invention, Fig. 2 is a time vs. load current characteristic diagram of the noise prevention circuit of the present invention, and Fig. 3 is a diagram of the conventional load drive circuit. It is a time vs. load current characteristic diagram. 1...Power terminal, 2...Transistor, 3...
Open/close switch, 4...load, C...capacitor, R1 ...first resistor, R2 ...second resistor.
Claims (1)
、該時定数回路がベース・エミツタ間に接続され
た半導体スイツチング素子と、該半導体スイツチ
ング素子のコレクタ・ベース間に接続された第２
の抵抗と、該半導体スイツチング素子のコレクタ
と負荷との間に挿入接続された開閉成スイツチと
よりなり、該スイツチをオンにした時点から該時
定数回路の時定数により定まる一定期間該半導体
スイツチング素子をオフし続けて該時定数回路と
該第２の抵抗とにより定格電流より十分低い電流
を該負荷に流し、該一定期間経過後の該半導体ス
イツチング素子のオンによつて該負荷に定格電流
が流れるようにした雑音防止回路。 A time constant circuit including a first resistor and a capacitor, a semiconductor switching element connected between the base and emitter of the time constant circuit, and a second time constant circuit connected between the collector and base of the semiconductor switching element.
and an on-off switch inserted and connected between the collector of the semiconductor switching element and the load, and the semiconductor switching element remains open for a certain period of time determined by the time constant of the time constant circuit from the time the switch is turned on. continues to be turned off, a current sufficiently lower than the rated current is caused to flow through the load through the time constant circuit and the second resistor, and the rated current is applied to the load by turning on the semiconductor switching element after the certain period of time has elapsed. Noise prevention circuit that allows the flow to flow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5671885U JPS61172311U (en) | 1985-04-16 | 1985-04-16 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5671885U JPS61172311U (en) | 1985-04-16 | 1985-04-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61172311U true JPS61172311U (en) | 1986-10-25 |
Family
ID=30580585
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5671885U Pending JPS61172311U (en) | 1985-04-16 | 1985-04-16 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61172311U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011048564A (en) * | 2009-08-26 | 2011-03-10 | Shindengen Electric Mfg Co Ltd | Device and method for outputting constant current |
-
1985
- 1985-04-16 JP JP5671885U patent/JPS61172311U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011048564A (en) * | 2009-08-26 | 2011-03-10 | Shindengen Electric Mfg Co Ltd | Device and method for outputting constant current |