| Patents for H02J 9 - Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting (16,437) |
|---|
| 12/27/1977 | US4065711 Chopper assisted uninterruptible power supply |
| 12/27/1977 | US4065676 Battery backup for AC powered DC supply |
| 12/13/1977 | US4063108 Inverter lockout circuit |
| 11/22/1977 | US4059770 Uninterruptible electric power supply |
| 11/15/1977 | US4058738 Method and circuit arrangement for starting up a converter having forced commutation with the correct phase |
| 11/01/1977 | US4056757 Emergency lighting system |
| 09/13/1977 | US4048553 Interruption-free power supply |
| 09/06/1977 | US4047076 Emergency lighting system for gaseous discharge lamps |
| 08/23/1977 | US4044268 Multiple power source automatic switching circuitry |
| 07/26/1977 | US4038559 Regulated uninterruptible power supply |
| 06/28/1977 | US4032828 Battery back-up system for electromagnets |
| 06/14/1977 | US4030013 Emergency lighting system AC line voltage sensing |
| 06/14/1977 | US4029993 Two level inverter circuit |
| 05/03/1977 | US4021678 Automatic transfer switch |
| 04/26/1977 | US4020360 Inverter control system |
| 04/12/1977 | US4017779 Battery isolator |
| 03/15/1977 | US4012681 Battery control system for battery operated vehicles |
| 03/01/1977 | US4010381 No-break ac power supply |
| 01/25/1977 | US4005331 High intensity discharge lamp with auxiliary light |
| 01/18/1977 | US4003198 Electronic timepiece |
| 01/04/1977 | US4001803 Lighting devices |
| 12/21/1976 | US3999078 Interruption free inverter power supply |
| 12/21/1976 | US3999077 Rectifier-inverter and line voltage regulator system |
| 11/09/1976 | US3991319 Standby power supply system |
| 09/21/1976 | US3982141 Voltage maintenance apparatus |
| 09/07/1976 | US3979657 Battery monitor with automatic scale and recycle prevents |
| 08/24/1976 | US3976986 Emergency lamp and solid state switching circuit therefor |
| 08/10/1976 | US3974397 Multi-phase rectifier system |
| 07/27/1976 | US3971957 Electrical load transfer control system |
| 07/06/1976 | US3968417 Clock-radio with automatically selected battery power |
| 04/13/1976 | US3950688 Portable auxiliary current source including a battery and charger |
| 04/06/1976 | US3949238 Distributed power switch for modular systems |
| 03/02/1976 | US3942028 Multi-node electrical network |
| 02/17/1976 | US3939359 Battery charging and discharging system |
| 02/03/1976 | US3936782 Automatic transfer switch |
| 01/20/1976 | US3934155 Power supply arrangement |
| 01/13/1976 | US3932764 Transfer switch and transient eliminator system and method |