JPS641424A - Excess current detecting circuit - Google Patents
Excess current detecting circuitInfo
- Publication number
- JPS641424A JPS641424A JP15608287A JP15608287A JPS641424A JP S641424 A JPS641424 A JP S641424A JP 15608287 A JP15608287 A JP 15608287A JP 15608287 A JP15608287 A JP 15608287A JP S641424 A JPS641424 A JP S641424A
- Authority
- JP
- Japan
- Prior art keywords
- motor
- signal
- driving
- gate
- input
- 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)
- Protection Of Generators And Motors (AREA)
Abstract
PURPOSE: To obtain the detecting circuit of less heat generation without consuming wasteful power, by controlling the stopping of a DC motor, when the input of signal showing driving current and excess current signal to a logical circuit is provided at the same time.
CONSTITUTION: By setting a wire for permitting the driving current for a DC motor 1 to flow to be a branch wire 14 from a motor relay 2, and by connecting the wire to the one side terminal of an AND gate 6, the input of signal during the driving of the motor or signal during the driving of no motor is provided. The output of a signal generating circuit 4 is connected to the other side terminal of the AND gate 6, and the input of normal signal or excess current signal is provided. Accordingly, when the input of the motor driving signal(1) and the normal signal(1) to the AND gate 6 is provided, then earth is connected to the motor relay 2 by a motor controlling circuit 5, and the DC motor 1 is driven. When the excess current signal(0) is detected, then the output of the AND gate 6 is turned into (0), and by the motor controlling circuit 5, the earth of the motor relay 2 is interruption-controlled, and a contact is opened, and the driving current to the DC motor 1 is interrupted and stopped the motor.
COPYRIGHT: (C)1989,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15608287A JPS641424A (en) | 1987-06-23 | 1987-06-23 | Excess current detecting circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15608287A JPS641424A (en) | 1987-06-23 | 1987-06-23 | Excess current detecting circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH011424A JPH011424A (en) | 1989-01-05 |
JPS641424A true JPS641424A (en) | 1989-01-05 |
Family
ID=15619904
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15608287A Pending JPS641424A (en) | 1987-06-23 | 1987-06-23 | Excess current detecting circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS641424A (en) |
-
1987
- 1987-06-23 JP JP15608287A patent/JPS641424A/en active Pending
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