JPS6423789A - Driving gear for miniature motor - Google Patents
Driving gear for miniature motorInfo
- Publication number
- JPS6423789A JPS6423789A JP62178664A JP17866487A JPS6423789A JP S6423789 A JPS6423789 A JP S6423789A JP 62178664 A JP62178664 A JP 62178664A JP 17866487 A JP17866487 A JP 17866487A JP S6423789 A JPS6423789 A JP S6423789A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- signals
- over
- degrees
- driving gear
- 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
- Control Of Direct Current Motors (AREA)
Abstract
PURPOSE:To prevent short circuit current from being generated, by providing the input circuit of an FF circuit producing two change-over signals with phase different from reference square wave by 180 degrees, with a time constant circuit. CONSTITUTION:From a T type FF circuit 11, based on the output of a reference pulse generating circuit 10, the output of change-over signals A and B with phase different by 180 degrees is generated. The signals A and B are fed to bridge-connected transistors 2-5. To the input circuit of the T type FF circuit 11, a time constant circuit consisting of capacitors C1, C2 is connected. As a result, at the time of changing over the signals A and B, the signals A and B temporarily come to a level L, and the transistors 2-5 are turned conductive at the same time, and short circuit current can be prevented from flowing.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62178664A JPH07118946B2 (en) | 1987-07-17 | 1987-07-17 | Small electric motor drive |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62178664A JPH07118946B2 (en) | 1987-07-17 | 1987-07-17 | Small electric motor drive |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6423789A true JPS6423789A (en) | 1989-01-26 |
JPH07118946B2 JPH07118946B2 (en) | 1995-12-18 |
Family
ID=16052411
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62178664A Expired - Lifetime JPH07118946B2 (en) | 1987-07-17 | 1987-07-17 | Small electric motor drive |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH07118946B2 (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS53124055A (en) * | 1977-02-16 | 1978-10-30 | Dev Finance | Pulse deleting circuit |
JPS57138877A (en) * | 1981-02-20 | 1982-08-27 | Hitachi Ltd | Da/ac inverter |
-
1987
- 1987-07-17 JP JP62178664A patent/JPH07118946B2/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS53124055A (en) * | 1977-02-16 | 1978-10-30 | Dev Finance | Pulse deleting circuit |
JPS57138877A (en) * | 1981-02-20 | 1982-08-27 | Hitachi Ltd | Da/ac inverter |
Also Published As
Publication number | Publication date |
---|---|
JPH07118946B2 (en) | 1995-12-18 |
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