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1725A

Information - Help 
ID = 21807
       
Country:
Europe
Brand: Common type Europe tube/semicond.
Tube type:  Full-Wave Rectifier gas filled   Power-supply 
Identical to 1725A

Base Europe 4-Pin (A, 4A, B4, since 1914) Sidecontact
Filament Vf 1.9 Volts / If 3.5 Ampere / Direct / Parallel, (AC/DC)
Description Full wave rectifier for use in magnetic chucks; 1.3A. Side M3 screw-type shield contact. The shield must be tied to the cathode via a 10Kohm, 0.5W resistor. 
Text in other languages (may differ)
Dimensions (WHD)
incl. pins / tip
71 x 135 x mm / 2.80 x 5.31 x inch
Weight 75 g / 2.65 oz
Tube prices 2 Tube prices (visible for members only)
Literature - - Manufacturers Literature   
 
1725a_n_philipsindustriale.jpg
1725A: my collection
Giuseppe Antonio Tusini

 
1725a_sock.png
1725A: Röhren-Tabu Lange 1941
Anonymous 15 Collector

 
1725a_spec.png
1725A: Röhren-Tabu Lange 1941
Anonymous 15 Collector


Usage in Models 4= 1934??

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):4



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