The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 15, 1997
Filed:
Jun. 01, 1995
Applicant:
Inventor:
Ram Shalvi, Hong Kong, HK;
Assignee:
Solar Wide Industrial Ltd., , HK;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02J / ; H01J / ;
U.S. Cl.
CPC ...
320 30 ; 320 32 ; 320 35 ; 320 39 ; 320 13 ; 315 50 ;
Abstract
A drive circuit for a solar lamp includes a thermistor TH1 that reduces a power supply to a lamp if a Mosfet Q1 to which it is physically mounted becomes too hot. Also, a resistor R37 sets at low voltage level below which the battery will be isolated. This serves to set a lower but safe level than the voltage at which the circuit in block A isolates the battery during optimum operating conditions of the lamp. Such components prevent or at least inhibit the possibility of the battery being discharged beyond a level from which it cannot recover.