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French Induction Coil Length of the coil 10 ¼ in., 1-inch spark length at 12 V, with commutator
French Induction Coil Length of the coil 10 ¼ in., 1-inch spark length at 12 V, with commutator on mahogany base, overall width 19 ¾ in. Conditi...
Large Induction Coil Based on Ruhmkorff's Design, c. 1900 Manufacturer: "Penning & Heuwing, Elektrotechnische Anstalt, Bonn a. Rhein", width of t...
5 Induction Coils, 1900 onwards 1) Slide induction apparatus by L. Zimmermann, Heidelberg, folding,
5 Induction Coils, 1900 onwards 1) Slide induction apparatus by L. Zimmermann, Heidelberg, folding, length 27 ½ in. – 2) Radiguet & Massiot, Pari...
Group of Physical Instruments, c. 1920 1) Induction coil, width 8 ¾ in., with polarity charger. –
Group of Physical Instruments, c. 1920 1) Induction coil, width 8 ¾ in., with polarity charger. – 2) Marconi HF-Transformer. – 3) Relay. – 4) W.D...
Induction Coil with Righi Spark Gap, c. 1910 1) Spark gap transmitter by Queen & Co., Inc., Philadelphia, for sparks of up to 4 in. at 24 V, widt...
"Ancel" Induction Coil Set, c. 1910 By "Laboratoires Louis Ancel, Paris". For 4-in. sparks, wooden case, width 11 ½ in. Condition: (2-/2) Fun...
Large Induction Coil with Hertz Spark Gap 1) Spark gap transmitter, English, probably made by
Large Induction Coil with Hertz Spark Gap 1) Spark gap transmitter, English, probably made by Newton & Co., for sparks up to 2 in., width of the ...
Demonstration Model of a Spark Gap, c. 1915 By Nederlandsche Instrumentenfabriek, Utrecht, for
Demonstration Model of a Spark Gap, c. 1915 By Nederlandsche Instrumentenfabriek, Utrecht, for sparks up to 2 ¾ in. adjustable from the side, mah...
The Dielectrimeter, c. 1936 High-voltage tester, manufactured by Empson Electrical Engineering,
The Dielectrimeter, c. 1936 High-voltage tester, manufactured by Empson Electrical Engineering, London, with induction coil, adjustable spark gap...
Variable Condenser by Carpentier, c. 1890 Signed: "Ateliers Ruhmkorff J. Carpentier Ingr Constr,
Variable Condenser by Carpentier, c. 1890 Signed: "Ateliers Ruhmkorff J. Carpentier Ingr Constr, Paris", with detachable glass isolator between t...
High-Voltage Aparatus "Système D'Arsonval", c. 1925 Manufactured by Gaiffe-Gallot & Pilon, Paris,
High-Voltage Aparatus "Système D'Arsonval", c. 1925 Manufactured by Gaiffe-Gallot & Pilon, Paris, 110 V, used to create high-voltage radiology po...
2 Bulbs 1) Carbon filament X-CIK bulb, with ceramic mount. – And: 2) Osram Power Star HQI-T 2,000 W
2 Bulbs 1) Carbon filament X-CIK bulb, with ceramic mount. – And: 2) Osram Power Star HQI-T 2,000 W neon gas lamp. Condition: (2/–) Kohlenfad...
Batteries, Battery Charger and Faradization Device, c. 1925/35 1) Tudor accumulator battery with 40
Batteries, Battery Charger and Faradization Device, c. 1925/35 1) Tudor accumulator battery with 40 cells, Brussels, c. 1925. – 2) "Rapid" batter...
Radio-related Service and Laboratory Equipment 1) Solatron double-beam oscilloscope CD 1400. – 2)
Radio-related Service and Laboratory Equipment 1) Solatron double-beam oscilloscope CD 1400. – 2) Schwachstrom-Technik A.G. – Zürich. Tone genera...
Galvanometer in Leather Case Marked: "Telegraph Works, Silvertown London", test equipment for
Galvanometer in Leather Case Marked: "Telegraph Works, Silvertown London", test equipment for telegraphy systems. Condition: (3+/–) Englische...
Tesla Transformer, c. 1920 By "Victor X-Ray Corporation, Chicago", type AJ, no. 24393, with 4 spark
Tesla Transformer, c. 1920 By "Victor X-Ray Corporation, Chicago", type AJ, no. 24393, with 4 spark gaps, in solid oak case with lid. Condition:...
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