Shunt switched resistor regulator with diode snubber

Patent · Mon Mar 20 23:00:00 EST 1989

OSTI ID:6069983

Ekstrand, J

This patent describes a shunt switched resistor regulator power supply for supplying a variable amount of power to a load comprising: a rectifier means for accepting AC input voltage and converting it to DC output voltage at a positive and a negative terminal; first, second, third, and fourth nodes wherein the first and the fourth nodes are coupled to the positive and negative terminals, respectively; a current limiting resistor coupled between the first and second nodes; a capacitor coupled between the second and fourth nodes; a resistor having parasitic inductance coupled between the second and third nodes; a switch coupled between the third and fourth nodes; and a diode having its anode coupled to the third node and having its cathode coupled to the second node; means coupled to the load terminals for sensing the power being delivered to the load and for controlling the switch to have a duty cycle which results in the desired load current flowing through and a desired voltage appearing across the load in accordance with control input signals received at a control input.

• Assignee: Spectra-Physics, Inc., San Jose, CA
• Patent Number(s): US 4814966
• OSTI ID: 6069983
• Country of Publication: United States
• Language: English

Related Subjects

200300* -- Electric Power Engineering-- Power Transmission & Distribution-- (-1989)
24 POWER TRANSMISSION AND DISTRIBUTION
42 ENGINEERING
420800 -- Engineering-- Electronic Circuits & Devices-- (-1989)
ALTERNATING CURRENT
CAPACITORS
CURRENTS
DESIGN
DIRECT CURRENT
ELECTRIC CURRENTS
ELECTRICAL EQUIPMENT
ELECTRONIC CIRCUITS
ELECTRONIC EQUIPMENT
EQUIPMENT
POWER CONDITIONING CIRCUITS
POWER SUPPLIES
RECTIFIERS
RESISTORS
SEMICONDUCTOR DEVICES
SEMICONDUCTOR DIODES
SHUNT REACTORS
VOLTAGE REGULATORS