Hardware
Hobby - Grade
These are hobby projects built at home. So don't expect high tech stuff. There's no warranty at all that you can reproduce a working copy. I put it online in the hope that someone can use it to get an idea on how similar things could be built.
Battery Monitor (aka battery watchdog) & Temperature Logging Device
This device indicates whether the voltage of 8 batteries is more or less equal. Furthermore it can log the temperatures of 3 sensors each hour during about 450 days. The logged data can be downloaded via RS232 to a PC. Software with GUI to display the data exists (linux, gtk2, opengl required.). |
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Switch-Box with 4 Relais and 4 Triac Outputs at 250 Vac / 16A
This is a device capable of controlling 4 outputs with relais and 4 with triacs. It is designed for European 250 V / 50 Hz line voltages. The maximum current is 16A at the input and any output. It's controllable by two ways. There's a detached console with 10 buttons and a 5V RS232 interface. |
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Professional - Grade
I present here only the hardware ready for public disclosure. So the content probably remains limited to semester and diploma thesis'.
600W PFC Power-Supply with 400V DC Output
This project was my 2nd semester thesis at the ETH. There's more about it in the report: |
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Flyback Converter with special EMC Requirements
This project was my diploma thesis at the ETH. The result is a flyback converter with specially low conducted noise. It is used as a power supply for high freqeuency linear amplifiers and control circuits of larger converters.
There's more about it in the report:
lem0517-srf.ch-simplex.pdf [3 MB, 2006-04-12, sig]
