Heidler, K., Kunzelmann, S., Lautenschlager, H., Jaeckle, R.
An electronic clock has at least one pointer (14, 15) and a dial (22, 26) and a clock work (9) connected to an energy storage mechanism. The dial (26) is placed on the rear side of a fluorescent...
Fischer, H., Heidler, K., Kunzelmann, S.
Non-uniformity of the irradiance in the test plane of a solar simulator leads to errors in the determination of the incident radiation power, hence in the efficiency if reference cell and test cell...
Heidler, K., Kunzelmann, S., Lautenschlager, H.
The invention relates to an information sign bearing an inscribed fluorescent collector (1) which can be illuminated by means of light sources (11) which are coupled to the edges (10) of the...
Präzisionsmeßplatz für den Wirkungsgrad von Solarzellen (1988)
Beier, J., Fischer, H., Heidler, K., Kamps, G., Kunzelmann, S., Zastrow, A.
A new precision measurement facility for solar cell efficiency has been installed with an actual overall measurement uncertainty of plus minus 2,3%. The measurement method and the experimental set-up...
Fluorescent concentrator stack with III-V solar cells (1988)
Heidler, K., Kamps, G., Kunzelmann, S.
Fluorescent planar concentrator stacks combine the effect of light concentration and spectral splitting of the solar irradiation. III-V solar cells offer the possibility of spectrally matching the...