Old batteries and accumulators
A bit of history
The first radios were rarely powered
by mains electricity. At the beginning of the 20th century, the cost of connection
'to the mains' was not within everyone's reach. Moreover, some networks
delivered DC voltages that were difficult to adapt to radios. It was therefore
with batteries and/or accumulators that radios were powered. A distinction was made
between the filament heating source and the one that powered the plates and
screen grids. The former, consuming a current that could be
close to one ampere (and more), was a rechargeable battery.
The latter, consuming less, was very quickly made up
of batteries. The user regularly
To make the radios of that era sing again, today we use
went downto his mechanic to recharge the
filamentbattery. The race for high storage capacities was on.
To make the radios of that era sing again, today we use
homemadepower supplies connected to the mains and providing these voltages. An example of an assembly is described here Power supply for battery radios.
A catalog presenting batteries and accumulators
Here is an example of a pair of (rechargeable) "filament"
and "Anode" batteries.
(BONVOISIN Catalog 1929)
The "High voltage" batteries appear. (BONVOISIN Catalog 1929)
(BONVOISIN Catalog 1929)
The "High voltage" batteries appear. (BONVOISIN Catalog 1929)
