Antique radios, Old Time Radios

12Z3

Country:	United States of America (USA)		Brand:	Common type USA tube
			Tube type:	Half-Wave Vacuum Rectifier

Tube ID = 3221


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Identical to	12Z3
First Source (s)	Feb.1933 : 70 Years of Radiotubes and V.
Successor Tubes	14Y4 12X4

Base	UX-Base (4 Pins (2 thick, USA 1924, UX) (Codex=B)
Was used by	Radio/TV-reception etc.
Filament	Vf 12.6 Volts / If: 0.3 Ampere / -: Indirect / -: Parallel / series AC/DC /
Tube prices	0 Tube prices (visible for members only)
Literature	Essential Characteristics, GE 1973 Taschenbuch zum Röhren-Codex 1948/49


	Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse Karel De Reus

ma collection
Eric Bride

Telefunken Werkstattbuch
Wolfgang Bauer

Cunningham Radiotron Manual
Peter Hoddow

Usage in Models (calculation each 25th of the month)	13= 1931? ; 1= 1932? ; 1= 1932 ; 10= 1933? ; 9= 1933 ; 15= 1934?? ; 5= 1934? ; 33= 1934 ; 6= 1935?? ; 2= 1935? ; 7= 1935 ; 5= 1936?? ; 5= 1936? ; 11= 1936 ; 1= 1937?? ; 9= 1937 ; 2= 1938?? ; 7= 1938 ; 1= 1941 ;
Number of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe): 143

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12Z3

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