Battery charger
Rectifier used for charging 1-3 storage cells. Input voltage 220 volts. Recommended tubes: Philips 451 and 452. (Shown here with an equivalent, the Radio Record W20).
Made by Besra Transformatorenfabriek, Korte Amstelstraat 2-6, Amsterdam.
Data                                         Valves
Serial number: 287
Made in: 1926
Purchased in: 2013
Sold in: 2022
 
The Besra factory in 1930
The workers are making battery eliminators.

Deze pagina is voor het laatst bijgewerkt op vrijdag 23 december 2022