Thesis (Masters Diploma (Electricity Engineering) -- Cape Technikon, Cape Town,1991 / At the time of the design the maximum allowable operating
frequency for an output power of between 200 and 250 watts
was 100 kHz. Although a 600 kHz operating frequency could
have been achieved, it would only be at a very low output
power level.
To maximise the current components available, a 210 watt
100 kHz direct-off-line switched-mode power supply was
developed. The design presented can be used to power any
compatible IBM XT/AT personal computer.
The prototype was tested. An overall efficiency of 61% was
achieved. The final prototype required 1 521 cm3 and weighed
approximately 980 g, representing a power to volume ratio of
0.14 W/cm3 (2.26 W/inch3).
Detailed procedures are also presented to help with the
design and selection of the reactive components.
Special design features include the half-bridge push-pull
topology, MOSFETS as power switches, digital current
limiting, primary power limiting, multiple outputs and fault
counting to name but a few.
| Identifer | oai:union.ndltd.org:netd.ac.za/oai:union.ndltd.org:cput/oai:localhost:20.500.11838/1168 |
| Date | January 1991 |
| Creators | Gartner, Andy Michael |
| Publisher | Cape Technikon |
| Source Sets | South African National ETD Portal |
| Language | English |
| Detected Language | English |
| Type | Thesis |
| Rights | http://creativecommons.org/licenses/by-nc-sa/3.0/za/ |
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