The LED driver and the 20W LED.
...noch ein Watt gespart...
A few days ago I posted my driver prototype for a 20 W, 700 mA, 32 V white LED. Under best conditions I reached 85% of power conversion efficiency between the 12 V input…
The prototype unit on perfboard.
Einem alten Käfer neue Tricks beibringen
The 78S40 is not one of the most modern switching regulators, together with its small brother the MC34063 it dates back to the 1990's. It differs from the 34063 by…
Knight Rider ist zurück
Now I am completely sold to AVR microcontrollers. ATMEL's free software seamlessly interfaces to the also free AVR-GCC C compiler and it is really easy to get started with the…
Licht für das Energihuset
Today I designed a solar-cell powered LED lighting for a model of the planned energy education centre Energihuset in Uppsala. The model was built by Nyréns Arkitektkontor and equipped with…