Matches 51 - 69 out of 69 < 1 2
Match Document Document Title
4317975 Induction heating apparatus with means for detecting zero crossing point of high-frequency oscillation to determine triggering time  
Induction heating apparatus using gate-controlled switching devices includes a zero crossing point detector for detecting the occurrence of each zero crossing point of high frequency energization...
4222098 Base drive for paralleled inverter systems  
In a paralleled inverter system, a positive feedback current derived from the total current from all of the modules of the inverter system is applied to the base drive of each of the power...
4177508 Apparatus for balancing an asymmetrical load  
Apparatus for use in balancing an asymmetrical load which is supplied from a three-phase network. The apparatus is provided with a self commutating converter for generating a three-phase output...
4032833 Chopper control device  
In a chopper control device in which a magnetic phase shifter is used for providing chopper turn-on and turn-off signals, an external magnetic field is applied to the core of the magnetic phase...
3984750 Alternator-rectifier unit with phase winding and rectifier sets subject to series-parallel switching  
Separate three-phase windings are connected to individual rectifiers arranged for series-parallel switching to improve the current-voltage output characteristic. The common exciter winding is fed...
3942090 Control process for operating a parallel-resonant circuit inverter that supplies an inductive charge, as well as the parallel-resonant circuit inverter operated by this method  
An improved parallel-resonant circuit inverter of the type having a rectifier, a thyristor DC/AC converter connected thereto and operating at a controllable frequency, a parallel resonant circuit...
3848175 STARTING INHIBIT SCHEME FOR AN HVDC CONVERTER  
A high-voltage converter comprises a plurality of electric valves interconnected in a bridge configuration between a-c and d-c electric power conductors and means for cyclically firing the valves...
3729671 POWER CONTROL AND SUPERVISORY SYSTEM  
There is herein disclosed an electrical power control and supervisory system for monitoring the outputs of a plurality of regulated power converters and generating error signals which are fed back...
3659184 ANALOG SIGNAL TO DISCRETE TIME INTERVAL CONVERTER (ASDTIC)  
An electronic signal conversion device is disclosed. The concept of pulse modulation includes in the sense of this invention the process of sampling a source of electric energy by one or several...
3582755 CONTROL SYSTEM FOR CONVERTERS  
A static converter connecting an AC network with a DC line has a control system in which an AC control function voltage is derived from the AC network, while a DC regulator voltage is derived from...
3466525 CONTROL CIRCUITS FOR STATIC CONVERTORS  
3465234 AC-DC CONVERTER RESPONSIVE TO A SINGLE SIGNAL IN THE AC SYSTEM  
3436642 POLYPHASE TO SINGLE PHASE STATIC FREQUENCY MULTIPLIERS WITH SWITCHING DEVICES RESPONSIVE TO LOAD CONDITIONS  
3419783 System for supplying frequency controlled single phase voltage from varying polyphase input voltage  
3416063 Stabilized sine wave inverter  
3316475 Portable high-voltage generator device  
3185856 Interconnection of power supply units  
3039253 Electrical precipitator power system  
2828461 Contact transformer with two parallel contact systems  
Matches 51 - 69 out of 69 < 1 2