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Class Information
Number: 340/645
Name: Communications: electrical > Condition responsive indicating system > Specific condition > Condition of electrical apparatus > Rectifier
Description: Subject matter wherein the monitored device is a rectifier or a plurality of rectifiers.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7339485 |
Rectifier for supplying double voltage and RFID tag thereof |
Mar. 4, 2008 |
| 7262700 |
Inductive powering surface for powering portable devices |
Aug. 28, 2007 |
| 6850164 |
Air leak detection system and method |
Feb. 1, 2005 |
| 6822432 |
Methods and systems for automated pipeline testing |
Nov. 23, 2004 |
| 6320404 |
Defective power source detection method and apparatus of power source supply system |
Nov. 20, 2001 |
| 6147616 |
Automatic power interruption and re-supply relay for an electric power line |
Nov. 14, 2000 |
| 5785842 |
Corrosion protection monitoring and adjustment system |
Jul. 28, 1998 |
| 5578936 |
Method and apparatus for automatically testing semiconductor diodes |
Nov. 26, 1996 |
| 5510725 |
Method and apparatus for testing a power bridge for an electric vehicle propulsion system |
Apr. 23, 1996 |
| 5225815 |
Monitor for a polyphase rectifier which detects open diodes by sensing a signal below a predetermined threshold |
Jul. 6, 1993 |
| 5223821 |
Triac power switching and testing system |
Jun. 29, 1993 |
| 5119073 |
AC ripple meter |
Jun. 2, 1992 |
| 4929932 |
Solid state relay having visual contact monitor |
May. 29, 1990 |
| 4847728 |
Detecting a defective suppressor diode in a coil driving circuit |
Jul. 11, 1989 |
| 4713652 |
Electrical apparatus |
Dec. 15, 1987 |
| 4685045 |
Device for failure detection in series-connected semiconductor rectifiers |
Aug. 4, 1987 |
| 4672315 |
Circuit arrangement for monitoring a thyristor |
Jun. 9, 1987 |
| 4644258 |
Electronic switch |
Feb. 17, 1987 |
| 4633241 |
Method of automated in-place SCR testing |
Dec. 30, 1986 |
| 4600917 |
Gate-turn-off thyristor failure detecting circuit |
Jul. 15, 1986 |
| 4597038 |
Switching overlap protection by control gate impedance monitoring |
Jun. 24, 1986 |
| 4577072 |
Telephone equipment tester |
Mar. 18, 1986 |
| 4565998 |
Diode failure detecting device in rotary rectifier |
Jan. 21, 1986 |
| 4559486 |
Detector for shorted rotating diode of a brushless alternator |
Dec. 17, 1985 |
| 4554507 |
Arrangement for testing the operability of a semiconductive device |
Nov. 19, 1985 |
| 4494182 |
Commutation detection apparatus and method |
Jan. 15, 1985 |
| 4471301 |
Device for monitoring thyristors of high-voltage valve |
Sep. 11, 1984 |
| 4442480 |
Protective circuit for thyristor controlled systems and thyristor converter embodying such protective circuit |
Apr. 10, 1984 |
| 4415884 |
Diagnostic circuit for programmable logic safety control systems |
Nov. 15, 1983 |
| 4394647 |
Voltage monitoring arrangement for ORed power diodes |
Jul. 19, 1983 |
| 4374380 |
Automotive electrical network voltage regulation monitoring circuit |
Feb. 15, 1983 |
| 4349813 |
Blown fuse sensor |
Sep. 14, 1982 |
| 4346347 |
Diode faults detecting apparatus |
Aug. 24, 1982 |
| 4285023 |
Rectifier system with failure alarm circuitry |
Aug. 18, 1981 |
| 4259636 |
Monitoring device for semiconductor rectifiers |
Mar. 31, 1981 |
| 4242674 |
Alternator failure warning indicator |
Dec. 30, 1980 |
| 4242713 |
Triac output asymmetry detector |
Dec. 30, 1980 |
| 4228477 |
Circuit for monitoring the current distribution in parallel-connected converted branches |
Oct. 14, 1980 |
| 4217621 |
Circuit for detecting diode shorting |
Aug. 12, 1980 |
| 4186391 |
Apparatus for detecting diode failures in multiple diode rectifier bridges |
Jan. 29, 1980 |
| 4156845 |
Apparatus for identifying faulty diodes in automotive alternators |
May. 29, 1979 |
| 4156189 |
Power supply fault analyzer |
May. 22, 1979 |
| 4142151 |
Failed diode indicator |
Feb. 27, 1979 |
| 4133018 |
Thyristor fault-detecting apparatus |
Jan. 2, 1979 |
| 4133017 |
Electrical power supply fault detecting system |
Jan. 2, 1979 |
| 4019120 |
Fault indicator for motor vehicle battery charging systems |
Apr. 19, 1977 |
| 4005361 |
Performance assurance apparatus for phased antenna array drives |
Jan. 25, 1977 |
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