Portable battery-free charger for radiation dosimeters

Patent · Tue May 15 00:00:00 EDT 1984

OSTI ID:6315076

Manning, F W

This invention is a novel portable charger for dosimeters of the electrometer type. The charger does not require batteries or piezoelectric crystals and is of rugged construction. In a preferred embodiment, the charge includes a housing which carries means for mounting a dosimeter to be charged. The housing also includes contact means for impressing a charging voltage across the mounted dosimeter. Also, the housing carries a trigger for operating a charging system mounted in the housing. The charging system includes a magnetic loop including a permanent magnet for establishing a magnetic field through the loop. A segment of the loop is coupled to the trigger for movement thereby to positions opening and closing the loop. A coil inductively coupled with the loop generates coil-generated voltage pulses when the trigger is operated to open and close the loop. The charging system includes an electrical circuit for impressing voltage pulses from the coil across a capacitor for integrating the pulses and applying the resulting integrated voltage across the above-mentioned contact means for charging the dosimeter.

• Assignee: Dept. of Energy
• Patent Number(s): US 4449049
• OSTI ID: 6315076
• Country of Publication: United States
• Language: English

Related Subjects

440102* -- Radiation Instrumentation-- Radiation Dosemeters
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
BATTERY CHARGERS
CAPACITORS
DOSEMETERS
ELECTRIC CONTACTS
ELECTRIC MEASURING INSTRUMENTS
ELECTRIC POTENTIAL
ELECTRICAL EQUIPMENT
ELECTROMETERS
ELECTRONIC CIRCUITS
EQUIPMENT
MAGNETS
MEASURING INSTRUMENTS
PERMANENT MAGNETS
PORTABLE EQUIPMENT
PULSES