JPS59155835U - Variable operating voltage load protection circuit - Google Patents
Variable operating voltage load protection circuitInfo
- Publication number
- JPS59155835U JPS59155835U JP4957083U JP4957083U JPS59155835U JP S59155835 U JPS59155835 U JP S59155835U JP 4957083 U JP4957083 U JP 4957083U JP 4957083 U JP4957083 U JP 4957083U JP S59155835 U JPS59155835 U JP S59155835U
- Authority
- JP
- Japan
- Prior art keywords
- protection circuit
- operating voltage
- variable operating
- load protection
- voltage load
- 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
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は従来の過電圧保護回路を内蔵の直流電源を使用
した場合の系統図、第２図は本考案の一実施例を示すブ
ロック図、第３図は本考案に係る負荷保護回路の一実施
例を示す回路構成図である。
１・・・・・・直流電源、２・・・・・・負荷保護回路
、２パ・・・・・・直流電源内蔵過電圧保護部、３・・
・・・・負荷、２１゜２２・・・・・・入力端子、２３
・・・・・・可変抵抗器、２４・・・・・・レベル判別
器、２５・・・・・・定電圧ダイオード、２６・・・・
・・トランジスタ、２７． ２９・・・・・・抵抗器、
２８．３０・・・・・・サイリスタ、３１．３２・・・
・・・出力端子。Figure 1 is a system diagram when using a DC power supply with a built-in conventional overvoltage protection circuit, Figure 2 is a block diagram showing an embodiment of the present invention, and Figure 3 is a diagram of a load protection circuit according to the present invention. FIG. 2 is a circuit configuration diagram showing an example. 1...DC power supply, 2...Load protection circuit, 2P...DC power supply built-in overvoltage protection section, 3...
...Load, 21゜22...Input terminal, 23
...Variable resistor, 24 ...Level discriminator, 25 ... Constant voltage diode, 26 ...
...transistor, 27. 29...Resistor,
28.30... Thyristor, 31.32...
...Output terminal.
Claims (1)
力電圧を検出する電圧検出手段と、該電圧検出手段の検
出出力により゛オン゛、“オフ゛するレベル判別手段と
、該レベル判別手段により゛オン゛、“オフ゛°するト
ランジスタを含む制御回路と、前記負荷装置の入力端子
に接続され且つ前記制御回路により制御されるスイッチ
ング回路とを具備することを特徴とした作動電圧可変形
負荷保護回路。In a load device that uses a DC power source, a voltage detection means for detecting the input voltage of the load device, a level discrimination means for turning on or off according to the detection output of the voltage detection means, and a voltage detection means for turning on or off according to the detection output of the voltage detection means; A variable operating voltage load protection circuit comprising: a control circuit including a transistor that turns off; and a switching circuit connected to an input terminal of the load device and controlled by the control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4957083U JPS59155835U (en) | 1983-04-02 | 1983-04-02 | Variable operating voltage load protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4957083U JPS59155835U (en) | 1983-04-02 | 1983-04-02 | Variable operating voltage load protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59155835U true JPS59155835U (en) | 1984-10-19 |
Family
ID=30180073
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4957083U Pending JPS59155835U (en) | 1983-04-02 | 1983-04-02 | Variable operating voltage load protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59155835U (en) |
-
1983
- 1983-04-02 JP JP4957083U patent/JPS59155835U/en active Pending
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