JPS5667763A - Voltage detecting circuit for electric power converter - Google Patents
Voltage detecting circuit for electric power converterInfo
- Publication number
- JPS5667763A JPS5667763A JP14384579A JP14384579A JPS5667763A JP S5667763 A JPS5667763 A JP S5667763A JP 14384579 A JP14384579 A JP 14384579A JP 14384579 A JP14384579 A JP 14384579A JP S5667763 A JPS5667763 A JP S5667763A
- Authority
- JP
- Japan
- Prior art keywords
- amplification
- inputted
- phototransistors
- circuits
- amplification circuits
- 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
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
PURPOSE: To decrease the number of amplifiers and improve frequency response by connecting a plural number of light-receiving elements in aprallel so that an output from them may be inputted to an amplification circuit.
CONSTITUTION: When a voltage is applied to SCR's 1-1W1-n, a photosignal generated in LED's 5-1W5-n, and the light is transmitted to phototransistors PT 7-1W 7-n through the intermediary of photofibers 6-1W6-n. At the same time, two electric signals from a pair of phototransistors 7-1W7-n (n=2m) are inputted to amplification circuits 10-1W10-m and are amplified. Then their output signals are inputted to logic circuits 11 at a rate of (m) pieces per circuit and logically summed up. Here, if the (m) value is properly selected, the number of the amplification circuits 10-1W10-m can be reduced and, with a plural number of phototransistors connected to the amplification circuits, the latter can be used at lower amplification rate. Thus it is possible to reduce the number of amplification circuits and, at the same time, enhance frequency response.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14384579A JPS5667763A (en) | 1979-11-08 | 1979-11-08 | Voltage detecting circuit for electric power converter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14384579A JPS5667763A (en) | 1979-11-08 | 1979-11-08 | Voltage detecting circuit for electric power converter |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5667763A true JPS5667763A (en) | 1981-06-08 |
Family
ID=15348280
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14384579A Pending JPS5667763A (en) | 1979-11-08 | 1979-11-08 | Voltage detecting circuit for electric power converter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5667763A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62225962A (en) * | 1986-03-27 | 1987-10-03 | Yoshihide Maeda | Current-quantity of light conversion detecting element |
US9385071B2 (en) | 2012-09-07 | 2016-07-05 | Renesas Electronics Corporation | Manufacturing method of semiconductor device and semiconductor device |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5026316B1 (en) * | 1970-12-30 | 1975-08-30 |
-
1979
- 1979-11-08 JP JP14384579A patent/JPS5667763A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5026316B1 (en) * | 1970-12-30 | 1975-08-30 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62225962A (en) * | 1986-03-27 | 1987-10-03 | Yoshihide Maeda | Current-quantity of light conversion detecting element |
US9385071B2 (en) | 2012-09-07 | 2016-07-05 | Renesas Electronics Corporation | Manufacturing method of semiconductor device and semiconductor device |
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