Electronic switching power supply
An electronic switching power supply for supplying power to an electrical load from a variable voltage level AC or DC voltage source having first and second terminals, the power supply including a transformer having a primary coil and a secondary coil, a first terminal of the secondary coil being connected to the electrical load, a first transistor connected in series with the primary coil, a first diode connected in series with the secondary coil and the electrical load, a first capacitor connected between the base of the first transistor and a second terminal of the secondary coil, a second transistor, the collector-emitter line of which is connected across the voltage source, a first resistor connected between the first terminal of the secondary coil and the collector of the second transistor, a second resistor connected between the first terminal of the secondary coil and the emitter of the first transistor, and a discharge circuit connected between the first capacitor and the electrical load, whereby the first capacitor is electrically charged during a conducting phase of the first transistor, and during a subsequent blocking phase of the first transistor, the electrical load receives the charge built up in the first capacitor during the preceding conducting phase.
- Assignee:
- Braun Aktiengesellschaft (Germany, Federal Republic Of)
- Patent Number(s):
- US 4523139
- OSTI ID:
- 6498196
- Resource Relation:
- Patent Priority Date: Priority date 11 May 1983, Germany, Federal Republic of (F.R. Germany); Other Information: PAT-APPL-493460
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
42 ENGINEERING
POWER SUPPLIES
TRANSISTOR SWITCHING CIRCUITS
CAPACITORS
ELECTRIC COILS
ELECTRIC POTENTIAL
SEMICONDUCTOR DIODES
TRANSFORMERS
TRANSISTORS
ELECTRICAL EQUIPMENT
ELECTRONIC CIRCUITS
ELECTRONIC EQUIPMENT
EQUIPMENT
SEMICONDUCTOR DEVICES
SWITCHING CIRCUITS
200104* - Fossil-Fueled Power Plants- Components
420800 - Engineering- Electronic Circuits & Devices- (-1989)