公开(公告)号：JPH10117446A

公开(公告)日：1998-05-06

申请号：JP15182197

申请日：1997-06-10

Applicant: SYMBIOS LOGIC INC

Inventor： FARRIS RICHARD D

IPC: H02J7/34 ,  H01M10/44 ,  H02J9/06 ,  H02M3/00

Abstract: PROBLEM TO BE SOLVED: To quickly charge a battery by connecting a transistor and a resistor in series to a charging voltage source, a transistor control circuit, and the battery to be charged. SOLUTION: A transistor 13 and a resistor 17 are connected in series between a battery charging source 12 and a battery 18, so as to control the charging process of the battery 18. When the transistor 13 becomes saturated owing to the current flowing through a base drive resistor 14, the transistor 13 is turned on and the current is supplied by means of a charging control circuit 16 which supplies the current to the resistor 14, when the circuit 16 detects that a main power source 10 is connected. When the main power source 10 is smaller than a preset threshold, the circuit 16 turns off the transistor 13 by stopping the current flowing through the resistor 14. The resistor 14 and circuit 16 jointly constitute a transistor control circuit.

公开(公告)号：DE69031489T2

公开(公告)日：1998-04-09

申请号：DE69031489

申请日：1990-12-20

Applicant: NCR INT INC ,  HYUNDAI ELECTRONICS AMERICA ,  SYMBIOS LOGIC INC

Inventor： LANGFORD THOMAS L ,  BULLINGER PHILIP W ,  FARRIS RICHARD D

IPC: G01R31/02 ,  H01L21/66 ,  H01L27/02

Abstract: An integrated circuit includes a monitor device connected between a pin for connection to the more positive lead of the power supply or the less positive lead of the power supply and the more positive voltage supply conductors or the less positive voltage supply conductors on the integrated circuit substrate. The monitor circuit has a threshold circuit (112) such that, insignificant perturbations will not trigger the monitor. The monitor circuit includes a comparator (120) having a reference voltage input (122) such that the same circuit may be used for the more positive side of the power supply, as well as, the less positive side with straightforward modifications. When the monitor circuit detects a significant fault, i.e. one that could falsely switch part of the integrated circuit, it sets a flip-flop (141) to record such an occurrence. The monitor flip-flop (141) cannot be reset by the usual reset signals, in order to prevent it from being cleared by normal diagnostics and error recovery operations.

公开(公告)号：DE69031489D1

公开(公告)日：1997-10-30

申请号：DE69031489

申请日：1990-12-20

Applicant: NCR INT INC ,  HYUNDAI ELECTRONICS AMERICA ,  SYMBIOS LOGIC INC

Inventor： LANGFORD THOMAS L ,  BULLINGER PHILIP W ,  FARRIS RICHARD D

IPC: G01R31/02 ,  H01L21/66 ,  H01L27/02

Abstract: An integrated circuit includes a monitor device connected between a pin for connection to the more positive lead of the power supply or the less positive lead of the power supply and the more positive voltage supply conductors or the less positive voltage supply conductors on the integrated circuit substrate. The monitor circuit has a threshold circuit (112) such that, insignificant perturbations will not trigger the monitor. The monitor circuit includes a comparator (120) having a reference voltage input (122) such that the same circuit may be used for the more positive side of the power supply, as well as, the less positive side with straightforward modifications. When the monitor circuit detects a significant fault, i.e. one that could falsely switch part of the integrated circuit, it sets a flip-flop (141) to record such an occurrence. The monitor flip-flop (141) cannot be reset by the usual reset signals, in order to prevent it from being cleared by normal diagnostics and error recovery operations.