Power switching circuit for a pulsed laser

Patent · Tue Jan 06 04:00:00 EST 1987

OSTI ID:6835803

O'Harra, II, D G

A power switching circuit is described for providing variable pulse width drive signals for a laser in response to variable pulse width control signals comprising: a transformer circuit for providing variable pulse width switching signals; a power transistor output circuit comprising transistor means coupled between the electrodes of the laser and the transformer circuit for providing the drive signals thereto in response to the switching signals. The transformer circuit further comprises: input terminals coupled to a power source; a first pair of primary windings coupled through a switch to the input terminals, the switch responsive to the variable pulse width control signals; a pair of secondary windings associated with the first pair of primary windings and coupled to the output circuit for providing, the variable pulse width switching signals thereto; and a second pair of primary windings coupled to the input terminals with a polarity opposite to that of the first pair for continuously biasing the transformer circuit toward saturation in one direction.

• Assignee: Edward Weck and Co., Inc., Research Triangle Park, NC
• Patent Number(s): US 4635265
• OSTI ID: 6835803
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
CONDUCTOR DEVICES
CONNECTORS
ELECTRIC COILS
ELECTRICAL EQUIPMENT
ELECTRODES
ELECTRONIC CIRCUITS
EQUIPMENT
LASERS
PULSE TECHNIQUES
PULSES
SIGNALS
SWITCHING CIRCUITS
TRANSFORMERS