Driving circuit for pulsating radiation detector

Patent · Tue Oct 07 00:00:00 EDT 1986

OSTI ID:5103571

Ko, W H; Yeh, G J

This patent describes a pulsing radiation detector system comprising means in a series circuit for emitting radiation in pulses of a selected, adjusted frequency (f), means responsive to pulses of radiation at the frequency for creating a control signal related to the received radiation, and a driving circuit for pulsing the radiation emitting means in the series circuit. The pulsing radiation detector further comprises: the driving circuit having means for creating voltage pulses in the series circuits. The pulses having a time base width (t) less than l/f in seconds, means of sensing current flow in the series circuit, means for limiting the current in the series circuit and means for adjusting the pulse width (t) as an inverse function of the sensed current. The radiation emitting means is a fluorescent light tube and the radiation pulses are light pulses; the pulse creating means including a transformer with a primary winding and a closely coupled secondary winding in the series circuit and means for applying pulses of voltage across the primary winding. The primary winding is divided into a first segment and a second segment and the pulse applying means includes means of applying voltage pulses alternately across the first and second segments. The current limiting means is a winding in the series circuit and loosely coupled with both the primary winding and the secondary winding.

• Assignee: North American Manufacturing Co., Cleveland, OH
• Patent Number(s): US 4616159
• OSTI ID: 5103571
• Resource Relation: Patent File Date: Filed date 22 Apr 1985
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
RADIATION DETECTORS
ELECTRONIC CIRCUITS
CURRENT LIMITERS
ELECTRIC POTENTIAL
FLUORESCENT LAMPS
FREQUENCY SELECTION
PULSATIONS
PULSES
SIGNALS
TIME DEPENDENCE
TRANSFORMERS
ELECTRICAL EQUIPMENT
EQUIPMENT
LIGHT BULBS
MEASURING INSTRUMENTS
440101* - Radiation Instrumentation- General Detectors or Monitors & Radiometric Instruments