Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Amplitude control
Patent
1999-06-15
2000-11-28
Callahan, Timothy P.
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Amplitude control
361 59, 361 911, H03K 508
Patent
active
061540811
ABSTRACT:
An improved reverse voltage protection circuit that protects sensitive electronic devices from damage due to both reversed battery connections and source voltage interruptions. An N-channel protection FET is inversely connected between the negative terminal of the protected device and ground, and the conduction of the protection FET is extended during a reverse transient protection period following interruption of the source voltage. A capacitor connected across the gate-to-source circuit of the protection FET is charged from the source voltage through a low impedance charging circuit including a diode to prevent the capacitor from discharging, and is discharged during an interruption of the source voltage through a high impedance discharging circuit connected in parallel with the charging circuit.
REFERENCES:
patent: 4763235 (1988-08-01), Morita
patent: 5339210 (1994-08-01), Howell
Burnham Adam L.
Crawford Daniel Alexander
Du Bois Paul Louis
Kekel Steven C.
Pakkala William Frank
Callahan Timothy P.
Cichosz Vincent A.
Delphi Technologies Inc.
Luu An T.
LandOfFree
Load circuit having extended reverse voltage protection does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Load circuit having extended reverse voltage protection, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Load circuit having extended reverse voltage protection will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1729714