JPS6431057A - Current supply detector - Google Patents
Current supply detectorInfo
- Publication number
- JPS6431057A JPS6431057A JP18811287A JP18811287A JPS6431057A JP S6431057 A JPS6431057 A JP S6431057A JP 18811287 A JP18811287 A JP 18811287A JP 18811287 A JP18811287 A JP 18811287A JP S6431057 A JPS6431057 A JP S6431057A
- Authority
- JP
- Japan
- Prior art keywords
- current
- photoisolator
- output
- trq1
- detector
- 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
- Measurement Of Current Or Voltage (AREA)
Abstract
PURPOSE:To obtain a detector usable as a general-purpose one and requiring no large current transformer, by regulating the current-amplification factor of a voltage converting circuit and that of a current amplifying circuit. CONSTITUTION:When a current is supplied to load L from an AC power source Vs, AC voltage is induced on the side of secondary winding by the current flowing to the primary winding of a two-phase winding coil L1 and AC output is inputted to a photoisolator PA. By this method, a light emitting diode emits light at every half wave output to input the same to the base of a phototransistor. Further, the output of the photoisolator PA is inputted to a transistor (TR)Q1 through a base resistor R2 and a relay RY1 is driven by turning TRQ1 ON to change over a relay contact r1. A current supply state can be detected on the basis of the change-over state of the relay contact r1. The regulation of a detected current is performed by regulating the current-amplification factor of the photoisolator PA and that of the TRQ1. Therefore, a detector can be used as a general purpose one.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18811287A JPS6431057A (en) | 1987-07-28 | 1987-07-28 | Current supply detector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18811287A JPS6431057A (en) | 1987-07-28 | 1987-07-28 | Current supply detector |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6431057A true JPS6431057A (en) | 1989-02-01 |
Family
ID=16217911
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP18811287A Pending JPS6431057A (en) | 1987-07-28 | 1987-07-28 | Current supply detector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6431057A (en) |
-
1987
- 1987-07-28 JP JP18811287A patent/JPS6431057A/en active Pending
Similar Documents
Publication | Publication Date | Title |
---|---|---|
ATE48348T1 (en) | SELF-RESISTANT POWER SUPPLY CIRCUIT. | |
HK44796A (en) | Power supply circuit | |
MY127169A (en) | Power supply apparatus and power supply system | |
JPH0527346B2 (en) | ||
JPS6431057A (en) | Current supply detector | |
GB1414222A (en) | Constant current power supply circuits | |
KR860002917A (en) | Voltage stabilization circuit of high voltage generator | |
DE3471213D1 (en) | Electronic switching power supply | |
JPS6443060A (en) | Switching regulator | |
SU862340A1 (en) | Two cycle transistorized inverter | |
KR890001724Y1 (en) | Conversion of dc power input dc power output | |
JPS57142174A (en) | Self-excited dc/dc converter | |
JPS6419969A (en) | Self-oscillation type switching power supply | |
JPS6447223A (en) | Power source equipment | |
JPH0386072A (en) | Dc power-supply device | |
JPS57143622A (en) | Switching regulator | |
JPS5625378A (en) | Self-excited forward converter | |
JPS5659324A (en) | Switching electric power source | |
JPS56162118A (en) | Electric power supply device | |
JPS6412860A (en) | Switching regulator | |
JPS57142175A (en) | Self-excited dc/dc converter | |
JPS5641767A (en) | Dc-dc converter | |
JPS55124329A (en) | Power circuit | |
JPS5644269A (en) | Television receiver | |
ES485353A1 (en) | A DC voltage converter |