John L Shoberg, Age 57Brockway, CA

John Shoberg Phones & Addresses

Kings Beach, CA

Truckee, CA

Tucson, AZ

Tahoe Vista, CA

Oakland, CA

PO Box 415, Kings Beach, CA 96143 (530) 546-7967

Work

Position: Administrative Support Occupations, Including Clerical Occupations

Education

Degree: High school graduate or higher

Mentions for John L Shoberg

Career records & work history

License Records

John Lars Shoberg

Licenses:
License #: 478 - Expired
Category: Asbestos
Issued Date: Jan 23, 1998
Effective Date: Jul 26, 2004
Expiration Date: Jan 23, 2000
Type: Asbestos Inspector

John Shoberg resumes & CV records

Resumes

John Shoberg Photo 23

John Shoberg

Location:
United States
John Shoberg Photo 24

John Shoberg

Location:
United States

Publications & IP owners

Us Patents

Portable Fluorescent Lamp And Inverter Therefor

US Patent:
3953768, Apr 27, 1976
Filed:
May 22, 1973
Appl. No.:
5/362669
Inventors:
Ronald D. Meredith - Hillsborough CA
John T. Shoberg - Milpitas CA
International Classification:
H02h 324
US Classification:
317 31
Abstract:
A portable battery-operated fluorescent light with an inverter having a single transistor Class C oscillator and a gapped-core nonsaturating reactor transformer with a parallel capacitance in the secondary circuit to cause the secondary circuit to act as a resonant tank circuit for the oscillator. The lamp is capacitor-ballasted, and the batteries are rechargeable. A large capacitance is connected in parallel with the batteries to decrease effective battery impedance. The light has an automatic shutoff circuit using a zener diode to shut off the inverter when the batteries are discharged to the safe limit and a self-contained constant voltage current-taper charging circuit for the cells, with the same zener diode as a voltage reference. A jam-in lamp socket is shown which allow the lamp to be inserted straight into the socket without rotation, and a method for pulsing the filament at one end of the lamp to improve startup of aging lamps is disclosed.

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