spacer spacer logo
    Home | AGB | Kontakt & Impressum spacer
     
(Neu Laden). Sie sind nicht eingeloggt. (Anmelden)
Titel
Improvements in or relating to crystal apparatus for use in connection with electric oscillations

Zusammenfassung
264,270. Wilcockson, J., and Roberts, H. W. Oct. 31, 1925. Crystal detectors; non-therniionic amplifiers; oscillation generators.-A crystal combination of alum in contact with saltpetre is stated to rectify and amplify received wireless signals. Under the influence of radio-frequency oscillations, the com. bination also emits a ray capable of oxidizing metals and influencing an adjacent electroscope. As shown in Fig. 1, the alum 3 and saltpetre 5 are mounted in insulating blocks 4, 6, carried by two casings 7, 8 which may telescope together to maintain contact between the crystals; or suitable means may be provided to feed the crystals towards each other automatically. An electric potential of the value normally used across the plate and filament of a thermionic valve is applied to the alum 3 by conductors 9, 10 taken to suitable terminals 9A, 10<A> on a plug base as shown, whilst a lower potential corresponding to the filament voltage is applied to the saltpetre through conductors 11, 12 from the terminals 11<A>, 12<A>. Fig. 3 shows the circuit arrangement of the crystal combination as used for receiving wireless signals.

Anzeigen ->

Anzeigen ->