Rheostat with iron wire - Instrument's card

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Rheostat with iron wire

Dating

30 May 1941

Maker

Antonio Cherubini

The rheostat is a variable resistance which has numerous applications in electrodynamic (from the simple elongation of an electric circuit till in carrying out special measures). As it apparents from a tag, this model of iron wire potentiometer is characterized by a supply voltage of 12V, a maximum current of 0.3A and a maximum resistance of 24Ω.

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Rheostat with iron wire

Cataloghi	Nº	Voce
Inv. 2016	580	Rheostat with iron wire Provisional numbering!
Inv. 1870	973	Reostato a cursore (potenziometro) con filamento a filo di ferro: volts 12, apm. 0.5, ohm 24

Section

Electrodynamics

Window

Non esposto

Conditions

Complete

Working NC

Intact

Large	34.0 cm (13.4 in)
Width	9.0 cm (3.5 in)
Height	10.0 cm (3.9 in)

Materials

Sources

Magrini R., Apparecchi per l'insegnamento della fisica, Officine Galileo, Firenze, 1940, pag. 129, fig. E676
Resti E., Catalogo generale di apparecchi per l'insegnamento della fisica, Ditta Emilio Resti di Franco Brambilla, Pubblicazi, Milano, 1930, pag. 88, fig. 434
Tarquini A., Apparecchi di fisica, Antonio Tarquini, Roma, 1928, pag. 126, fig. 30686

The additional indications which integrate the items of the conservation's state have the following meaning: (?) = maybe complete; M = maintenance; P = partial; R = restored; D = used for teaching; NC = not checked; X = impossible to verify.

In order to avoid that instruments' cards without the english description text of the device be directly selected, I added a special filter with which only the complete cards are shown in the menu. Anyhow all the partial english instruments' cards (with instrument's dating, dimensions, state of conservation...) can always be seen even if they haven't the english description text. To read this uncomplete cards is sufficient to click, for example, on an instrument's picture or on the word "View" of the table column called "Card" every time they appear in the other pages of this database.