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Show Battery Charger Connection Hints Should Be As Nearly Foolproof Fool-proof as Possible, From Working Standpoint. A battery charger Is one piece of apparatus necessary for every radio equipment that uses a storage battery. It should be the one article that Is as nearly foolproof and perfect as possible pos-sible not foolproof from the viewpoint view-point of preventing anyone from tampering tam-pering or changing the mechanical parts, but foolproof from a working standpoint One never finds out the defects and faults that are attached to any piece of apparatus until after It has been In service for some time, unless the constructional features are pointed out beforehand. Some magnetic and bulb types of chargers may be ruined or badly damaged dam-aged if an attempt Is made to charge the battery without first disconnecting disconnect-ing the wires that run from the receiving re-ceiving set to the battery terminals. The reason for this is that one side of the power line Is usually grounded and one of the filament leads of the set Is connected directly to ground. If the wrong connection Is made, then a short circuit is made through the charger. Battery Connected to Set. Other makes of these chargers can be successfully operated with the battery bat-tery still connected to the set. Even when this is possible a wave of Interference Inter-ference is sent out over the aerial that will ruin reception for all of the receivers re-ceivers In the near vicinity, even though the receiver attached to the charger Is not in operation. This Is possibly due to the fact that the charger forms a miniature transmitting transmit-ting station. If the charger Is left attached to the battery after It is turned off, then the battery is likely to discharge through the charger. The best arrangement ar-rangement Is to detach the battery clips from the set when charging and to detach the charger clips from the battery terminals when the battery Is fully charged. Attached Permanently. The electrolytic type of charger can be attached permanently to the battery bat-tery without any danger of discharging discharg-ing or Interfering with surrounding receivers while the charger Is In operation, opera-tion, or without harming the charger Itself. With the bakellte type charger It is possible to use the set and charge the battery at the same time, an Impossible Im-possible teat with either the bulb or magnetic vibrator types of chargers, due to noise. It sometimes happens that the power supply Is cut off, due to breakdown break-down In the generating apparatus or to changing over machines. If the current goes off for only an instant, and then comes back on again, It Is likely to cause the vibrator to start up out of phase and cause current to flow through the battery in such a way as to discharge the battery. The electrolytic electro-lytic and bulb types will automatically start to charge with the correct polarity polar-ity when the current comes on again. |