secured to the housing part (5) by a solder connection (19), esp. a soldered adapter ring (18). The insulating layer (14) is made of enamel. The conducting layers (16) are made of a semiconductor material, or a resistance material, e.g. Cr2O3. ADVANTAGE - The amplifier converts...
or burning in a non oxidizing atmosphere, of sole scaly graphite or the ash earth compound of the graphite and other usual refractory raw material. CONSTITUTION:5-100wt% Scaly graphite is blended with 95-0wt% other usual refractory e.g. one or more compounds of MgO, Al2O3, Cr2O3, ...