Power Supplies Patents 1920-1975 Brought to you by SMPS Power Supplies


1975 - USA

Number

Title

Inventor Assignee Comments
3,859,590 Waveform averaging rc circuit Cielo et al.    
3,863,134 Electric control cicuit for electronic power converters Pollard    
3,870,392 Grounding mounting means Bond    
3,875,494 Static power conversion arrangement for converting direct current power to … Gyugyl    
3,877,004 Alarm apparatus Okada et al.    
3,882,370 Control of power converters having a parallel resonant commutatin circuit McMurray    
3,883,786 Pulse width modulated servo system McNaughton et al.    
3,886,485 Linear voltage controlled oscillator including a timing capacitor charged and … Takahashi    
3,889,169 Position and velocity servo control for motor controlled article carrier and handler Hirschman    
3,892,977 Switchable high voltage power supply Bierly    
3,902,107 Circuit for protecting series-connected switches Brown    
3,904,928 Flyback transformer Sawada    
3,904,950 Rectifier circuit Judd et al.    
3,909,698 Regulated AC to DC converter having a controllable rectifier assembly Nill    
3,909,700 Monolithic semiconductor rectifier circuit structure Ferro    
3,916,281 Voltage regulator control circuit Owen    
3,917,990 Battery charging control using temperature differential circuit Sherman, Jr.    
3,928,793 Power supply circuit with electro-magnetic feedback Waltz    

1974 - USA

Number

Title

Inventor Assignee Comments
3,790,878 Switching regulator having improved control circuiting Brokaw    
3,793,511 Digital motor control circuit Bala et al.    
3,816,809 Power supply having improved over-voltage protection Kuster    
3,818,297 Motor control apparatus Ha    
3,818,484 Power electronic circuit for elecrtronic digital system Nakamura et al.    
3,820,893 Synchronizing apparatus Donohue    
3,824,447 Booster circuit Kuwabara    
3,828,239 High dc voltage generating circuit Nagai et al.    

 

1973 - USA

Number

Title

Inventor Assignee Comments
3,735,225 Control device for switching rectifier systems Raatz    
3,735,235 Dc to Dc converter with voltage regulation feedback loop achieving isolation … Hamilton et al.    
3,735,241 Poly-phase digital controller O'Sullivan    
3,760,258 Static converter Percorini    
3,761,790 Current stabilizing circuit with minimal leakage Shuey    
3,772,588 Dual Control Loop Switching Regulator Kelly et al. Cogar Corp.  

 

1972 - USA

Number

Title

Inventor Assignee Comments
3,636,481 Modular elements for electrical filters Boulin et al.    
3,659,185 Volt-Second Unbalanced Compensated Two Core Power Transformer Gregorich Collins Radio  
3,660,751 Dc-dc regulated inverter employing pulse-width modulation with a volt second … Bullinga    
3,667,028 Rectifier circuit including transistors Leufgen    
3,694,726 Combined inductor and transformer device Cielo et al.    
3,697,855 Hysteresis-loop control for a power transformer Kernick    

 

1971 - USA

Number

Title

Inventor Assignee Comments
3,562,623 Circuit for reducing stray capcitance effects in transformer windings Farnsworth    
3,571,614 Transistor switch with minimized trasition power absorption Rolstead    
3,579,156 Shielded filter Parfitt    
3,582,754 Direct-current converter with overload protection Hoffmann    
3,582,758 Rectifier using low saturation voltage transistors Gunn    
3,611,097 Digital control system for ac to dc power conversion Joslyn    
3,611,330 Method of detecting impeding saturation of magnetic cores Cacossa    
3,621,363 An arrangement for premagnetizing a static dc converter Ginman et al.    
3,624,405 Balanced current regulator with current-balance-responsive feedback circuit Bishop et al.    
3,624,475 Duty cycle control apparatus Smith    
3,631,259 Apparatus for boosting a direct current voltage Kiyota    

 

1970 - USA

Number

Title

Inventor Assignee Comments
3,512,040        
3,517,300   McMurray    

 

1969 - USA

Number

Title

Inventor Assignee Comments
3,422,341   Karimura et al.    
3,436,647   Gobeli et al.    
3,487,289   McMurray    

 

1966 - USA

Number

Title

Inventor Assignee Comments
3,294,981   Bose    
3,316,445   Ahrous    

 

1965 - USA

Number

Title

Inventor Assignee Comments
3,171,092   Jetter    
3,213,291   Reid    
3,213,344   Jensen    
3,217,239   Lunney    
3,221,092   Malsbary et al.    
3,226,627   Fromkin    

1964 - USA

Number

Title

Inventor Assignee Comments
3,127,551   Lingle    

 

1963 - USA

Number

Title

Inventor Assignee Comments
3,076,131   Weil    

 

1961 - USA

Number

Title

Inventor Assignee Comments
3,012,181   Schultz    

 

1960 - USA

Number

Title

Inventor Assignee Comments
2,977,524   Lingle    

 

1957 - USA

Number

Title

Inventor Assignee Comments
2,792,556   Oglesbee    

 

1944 - USA

Number

Title

Inventor Assignee Comments
2,342,084   Lennox    

 

1932 - USA

Number

Title

Inventor Assignee Comments
1,865,430   Borkent    

 

1920 - USA

Number

Title

Inventor Assignee Comments
1,357,197   Brooks    


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