Current regulator with a. c. and d. c. feedback

• US 3,350,628 A
• Filed: 07/16/1964
• Issued: 10/31/1967
• Est. Priority Date: 07/16/1964
• Status: Expired due to Term

• Current Assignee: Lee E. Gallaher, Richard J. Redner
• Original Assignee: Lee E. Gallaher, Richard J. Redner
• Inventors: Gallaher, Lee E., Redner, Richard J.
• Application Number:
  US04/383,038
• Time in Patent Office: 1,202 Days
• US Class Current: 323/285
• CPC Class Codes: H02M 3/1563 without using an external clock H02M3/158 takes precedence

Claims

1. APPARATUS FOR SUPPLYING CURRENT FROM A SOURCE TO AN OUTPUT CIRCUIT, COMPRISING A SWITCHING DEVICE CONNECTED BETWEEN SAID SOURCE AND SAID OUTPUT CIRCUIT, A FILTER CIRCUIT CONNECTED BETWEEN SAID SWITCHING DEVICE AND SAID OUTPUT CIRCUIT, A BINARY TRIGGER CIRCUIT CONNECTED IN CONTROLLING RELATIONSHIP TO SAID SWITCHING DEVICE, MEANS FOR SENSING TOTAL CURRENT SUPPLIED FROM SAID SOURCE TO SAID FILTER, MEANS RESPONSIVE TO SAID SENSING MEANS FOR APPLYING TO SAID TRIGGER CIRCUIT A FIRST FEEDBACK SIGNAL OF A SENSE TO OPPOSE A VARIATION IN SAID TOTAL CURRENT, SAID TRIGGER CIRCUIT EXHIBITING HYSTERESIS IN CONTROLLING SAID SWITCHING DEVICE IN RE SPONSE TO SAID VARIATION IN SAID OUTPUT CIRCUIT, MEANS FORMING A PARALLEL CIRCUIT WITH SAID SWITCHING DEVICE FOR SUPPLYING CURENT BETWEEN SAID SOURCE AND SAID FILTER WHEN SAID SWITCHING DEVICE IS OPEN, AND MEANS COUPLED TO SAID PARALLEL CIRCUIT FOR SUPPLYING TO SAID TRIGGER CIRCUIT A SECOND FEEDBACK SIGNAL RESPONSIVE TO A CHANGE OF CURRENT PRODUCED BETWEEN SAID SOURCE AND SAID FILTER BY SAID SWITCH, SAID SECOND FEEDBACK SIGNAL BEING OF A SENSE TO DRIVE SAID SWITCHING DEVICE TOWARD ITS OPEN CONDITION WHEN CLOSED AND TOWARD ITS CLOSED CONDITION WHEN OPEN.