Please click your language flag. Bitte Sprachflagge klicken.

Højohmsmodstand Potentiometer Carbon powder

Højohmsmodstand Potentiometer; Bang & Olufsen B&O; (ID = 1894324) Radio part Højohmsmodstand Potentiometer; Bang & Olufsen B&O; (ID = 1894326) Radio part
Use red slider bar for more.
Højohmsmodstand Potentiometer; Bang & Olufsen B&O; (ID = 1894324) Radio part
Bang & Olufsen B&O;: Højohmsmodstand Potentiometer [Radio part] ID = 1894324 1400x933
Select picture or schematic to display from thumbnails on the right and click for download.
For model Højohmsmodstand Potentiometer Carbon powder, Bang & Olufsen (B&O); Struer:
Photo von eigenem Bauteil.
Country:  Denmark
Manufacturer / Brand:  Bang & Olufsen (B&O); Struer
Year: 1930–1937 ?? Category: Radio part (not a module) 
Wave bands - without
Power type and voltage No Power needed
Loudspeaker - - No sound reproduction output.
Power out
from Model: Højohmsmodstand Potentiometer [Carbon powder] - Bang & Olufsen B&O; Struer
Material Metal case
Shape Miscellaneous shapes - described under notes.
Dimensions (WHD) 33 x 33 x 19 mm / 1.3 x 1.3 x 0.7 inch

High resistivity potentiometer.

The variation of resistivity is based on the compression of carbon powder inside the metal box, similar to the functioning of a carbon microphone.

Variable resistor based on the principle of carbon powder compression. A strong metal case (steel, brass) is filled with carbon powder and a piston is forced against the powder by turning a threaded screw. One contact is given by the metal case while the other contact is a smaller, from the case insulated, metal plate opposite to the piston and in contact with the carbon powder. A feed through is provided by a screw for electrical connection. The resistance range, depending on pressure, is typically from 5 kΩ to 1 MΩ.

Net weight (2.2 lb = 1 kg) 0.037 kg / 0 lb 1.3 oz (0.081 lb)
Mentioned in Jan Thogersen - The Bang and Olufsen Collection 1925 -1949 )

Model page created by Albert Walenta. See "Data change" for further contributors.

All listed radios etc. from Bang & Olufsen (B&O); Struer
Here you find 451 models, 390 with images and 255 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.