Technical Briefs
"TESTING a dry cell by the glow from a flash-lamp battery is rather hard on the cell, as the average bulb requires far more current to light it than is normally drawn from the cell. [THs necessary current to energise the mains-driven type of moving: coil loudspeaker can practically always be taken direct from D.C. mains, as it does not have to be filtered or smoothed like that of H.T. mains units. i an accumulator is stood aside for a time it should be given a really good charge every eight weeks or so to keep it in good condition. O not lose the little plugs on the top of the accumulator, as these play an important part in its correct operation.
Permanent link to this item
Hononga pūmau ki tēnei tūemi
https://paperspast.natlib.govt.nz/periodicals/RADREC19290419.2.62
Bibliographic details
Ngā taipitopito pukapuka
Radio Record, Volume II, Issue 40, 19 April 1929, Page 30
Word count
Tapeke kupu
124Technical Briefs Radio Record, Volume II, Issue 40, 19 April 1929, Page 30
Using this item
Te whakamahi i tēnei tūemi
See our copyright guide for information on how you may use this title.
Log in