Noise reduction in photomultiplier circuits
Simple damping device inserted in cable at power supply acts as filter, thus eliminating noise pulses in photomultiplier tube.
Franke, J. M.↗
Engineering topics
Franke, J. M.
Publications and source records attributed to Franke, J. M..
Visual alignment aid
Device consists of beam-splitter cube and two 90 deg prisms cemented together. Various components can be made as two pieces, eliminating seams, except beam-splitter diagonal.
Franke, J. M.↗
Holographic direct-vision spectroscope
Spectroscope incorporates two prisms combined with holographic grating as dispersing element. This provides high dispersion with selective undeviated wavelength. Prisms with different indices of refraction and/or angles for construction and reconstruction may be used. Also, different prisms for input and output may be used.
Franke, J. M.↗
Dual-band ridged waveguide
Waveguide-in-waveguide technique involves routing two waveguides through same passageway. Smaller waveguide can be soft or silver soldered inside X-band waveguide to form single ridge guide and to propagate frequencies at C-band.
Franke, J. M.↗