JPS5510883A - Bridge type governor starting circuit for dc motor - Google Patents
Bridge type governor starting circuit for dc motorInfo
- Publication number
- JPS5510883A JPS5510883A JP8418478A JP8418478A JPS5510883A JP S5510883 A JPS5510883 A JP S5510883A JP 8418478 A JP8418478 A JP 8418478A JP 8418478 A JP8418478 A JP 8418478A JP S5510883 A JPS5510883 A JP S5510883A
- Authority
- JP
- Japan
- Prior art keywords
- transistor
- resistor
- motor
- capacitor
- bridge
- 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
- Motor And Converter Starters (AREA)
- Control Of Direct Current Motors (AREA)
Abstract
PURPOSE: To prevent overprotection of the temperature characteristics of a voltage detecting transistor of a DC motor by omitting the diode connected beween the transistor and a power supply and connecting a capacitor in parallel with diodes connected in a bridge circuit.
CONSTITUTION: The armature winding Ra and resistors R1∼R3 of a DC motor form a bridge. An armature voltage detecting transistor Q1 operates to control the base potential of a current feeding control transistor (TR)Q2 to thereby drive the motor as predetermined. A parallel circuit of a diode D2 and a capacitor C is connected between the bias resistor R6 and the bridge resistor R3 of the transistor Q2. When the transistor Q2 starts conducting, the potential of the connecting point between the capacitor and the resistor R3 is lowered to discharge the capacitor in the circuit of the resistor R3-motor M-resistor R4-transistor Q1-resistor R2-capacitor C to positively feed back the transistor Q1 to thereby accelerate the conduction of the transistor Q2.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8418478A JPS5951229B2 (en) | 1978-07-11 | 1978-07-11 | Bridge type governor starting circuit for DC motor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8418478A JPS5951229B2 (en) | 1978-07-11 | 1978-07-11 | Bridge type governor starting circuit for DC motor |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5510883A true JPS5510883A (en) | 1980-01-25 |
JPS5951229B2 JPS5951229B2 (en) | 1984-12-12 |
Family
ID=13823386
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8418478A Expired JPS5951229B2 (en) | 1978-07-11 | 1978-07-11 | Bridge type governor starting circuit for DC motor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5951229B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4757354A (en) * | 1986-05-02 | 1988-07-12 | Matsushita Electrical Industrial Co., Ltd. | Projection optical system |
US5886835A (en) * | 1995-03-24 | 1999-03-23 | Nikon Corporation | Relay optical system |
-
1978
- 1978-07-11 JP JP8418478A patent/JPS5951229B2/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4757354A (en) * | 1986-05-02 | 1988-07-12 | Matsushita Electrical Industrial Co., Ltd. | Projection optical system |
US5886835A (en) * | 1995-03-24 | 1999-03-23 | Nikon Corporation | Relay optical system |
Also Published As
Publication number | Publication date |
---|---|
JPS5951229B2 (en) | 1984-12-12 |
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