JPS5466444A - Power source control circuit - Google Patents
Power source control circuitInfo
- Publication number
- JPS5466444A JPS5466444A JP13369877A JP13369877A JPS5466444A JP S5466444 A JPS5466444 A JP S5466444A JP 13369877 A JP13369877 A JP 13369877A JP 13369877 A JP13369877 A JP 13369877A JP S5466444 A JPS5466444 A JP S5466444A
- Authority
- JP
- Japan
- Prior art keywords
- positive
- power source
- voltage
- negative
- 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.)
- Granted
Links
Landscapes
- Direct Current Feeding And Distribution (AREA)
Abstract
PURPOSE: To permit the use of FET connected to positive and negative power source in any order in a safety range by making the positive voltage applied to load almost zero while negative voltage to be applied does not reach the fixed value.
CONSTITUTION: In supplying voltage to a load such as FET requiring positive and negative power sources, voltage is supplied to the load 20 on the negative side through the negative power source regulator 2 from the negative power source 1. The output voltage of the negative power source regulator 2 is detected by a negative voltage detection circuit consisting of the Zener diode 3, the resistors 4 and 6, and the transistor 5. When negative voltage exists, positive voltage is supplied to the load 30 on the positive side through the positive power source regulator 8 from the positive power source 7. When no negative voltage exists, the supply of positive voltage to the load 30 on the positive side is controlled so as to stop in order to protect FET as load.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13369877A JPS5466444A (en) | 1977-11-08 | 1977-11-08 | Power source control circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13369877A JPS5466444A (en) | 1977-11-08 | 1977-11-08 | Power source control circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5466444A true JPS5466444A (en) | 1979-05-29 |
JPS5650500B2 JPS5650500B2 (en) | 1981-11-30 |
Family
ID=15110784
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13369877A Granted JPS5466444A (en) | 1977-11-08 | 1977-11-08 | Power source control circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5466444A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5216649A (en) * | 1975-07-28 | 1977-02-08 | Sharp Corp | Power sequence circuit |
-
1977
- 1977-11-08 JP JP13369877A patent/JPS5466444A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5216649A (en) * | 1975-07-28 | 1977-02-08 | Sharp Corp | Power sequence circuit |
Also Published As
Publication number | Publication date |
---|---|
JPS5650500B2 (en) | 1981-11-30 |
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