JPS5697113A - Constant-voltage device for alternating current - Google Patents
Constant-voltage device for alternating currentInfo
- Publication number
- JPS5697113A JPS5697113A JP17112679A JP17112679A JPS5697113A JP S5697113 A JPS5697113 A JP S5697113A JP 17112679 A JP17112679 A JP 17112679A JP 17112679 A JP17112679 A JP 17112679A JP S5697113 A JPS5697113 A JP S5697113A
- Authority
- JP
- Japan
- Prior art keywords
- resistor
- output
- variable resistor
- current
- voltage
- 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
- Control Of Electrical Variables (AREA)
Abstract
PURPOSE: To keep constant the voltage given to the load, by controlling the phase of switching elements with ease externally, which are connected between the AC power input and the load.
CONSTITUTION: A variable resistor 32 is provided at an inverting input terminal of an error amplifier 6 via a resistor 31, and it is located outside the device to draw out the current I0. The amplifier 6 is an operational amplifier which has a nagative feedback circuit of RC in parallel connection, and the output V3 is determined so that input voltage V1=V2 can be obtained at steady-state. When the current I0 flows, V3 changes correspondingly, resulting in changing the AC output V0. Since V0 changes in proportion to I0, the AC output V0 can continuously be adjusted by externally adjusting I0. In this case, when the variable resistor 32 is selected to a sufficiently smaller value than the resistor 31, the current I0, that is, the AC output voltage V0, is almost in proportion to the set value of the variable resistor 32, the width of change in V0 is determined with the resistor 31. Thus, even if the variable resistor 32 is in variation by ±20% or so, I0 is not subject to any effect and the variable resistance can easily by replaced.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17112679A JPS5697113A (en) | 1979-12-31 | 1979-12-31 | Constant-voltage device for alternating current |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17112679A JPS5697113A (en) | 1979-12-31 | 1979-12-31 | Constant-voltage device for alternating current |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5697113A true JPS5697113A (en) | 1981-08-05 |
Family
ID=15917456
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17112679A Pending JPS5697113A (en) | 1979-12-31 | 1979-12-31 | Constant-voltage device for alternating current |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5697113A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4910349A (en) * | 1972-05-30 | 1974-01-29 |
-
1979
- 1979-12-31 JP JP17112679A patent/JPS5697113A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4910349A (en) * | 1972-05-30 | 1974-01-29 |
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