Dimensions  ( W x D x H )   11 cm x 20 cm x 6.5 cm   /   4_1/4" x 8" x 2_1/2"

INDUCTANCE / CAPACITANCE  MEASUREMENT  BRIDGE     H&B   2554174    » INKAVI «
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HARTMANN & BRAUN AG, Frankfurt am Main / Germany                       (1960)

A C T I V A T E  measurement: PRESS upper-right KNOP / TURN KNOP for "HOLD".
A CHOPPER converts the battery's 4.5 VDC into a 1400 Hz frequency 6 Vpp tone.
The value of a capacitor ( in "nF/μF" - or of a coil in "H/mH" ) is found in
the volume-dip of the tone, listened with headphones ...

R E M A R K :
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On the back side is a "Special Plug":  A PHOTO FLASH-LIGHT CABEL can be used
and modified with an EARPHONE-PLUG - a more compact alternative ...

                   

               Have a Look at the WHEATSTONE(R)Bridge »PONTAVI« ...
               Have a Look at a transistorized R-L-C Bridge ...

*) ADDENDUM ... Years later:
   You love your SENNHEISER HD-414 ... BUT the FOAMs are decayed ? ...

         

  ... Replace it with FLANELL: Mounted by RUBBER BANDS made of Bike-Tubes !!!

impressum:
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© C.HAMANN            http://public.BHT-Berlin.de/hamann             12/13/14