Vibrating Chargers.

Radio Record, Volume I, Issue 37, 30 March 1928, Page 13

Vibrating Chargers.

FEW old-fashioned listeners are still utilising battery chargers of the vibrating type, and most of them appear to be particular. not to work them during broadcast hours. But the valve rectifier is a much superior and more trustworthy instrument, as it will |

~~ not let the battery down. A vibrator, unicss provided with complicated safety gear, will short the whole battery charge if a stoppage of the main’s current should happen, if only for a moment. This tvpe of rectifier may cause considerable interference with neighhouring receivers, but this trouble ean be reduced, if not cured, by placing a 1 mfd. condenser across the vibrator gap.