At this time, the energy will be supplied solely by the battery and since there is a resistance in series with the voltage source, the lamp will be dimmer .-- Light current 01 : 03, 10 November 2006 ( UTC)
12.
In charger circuit, I use a 22 ( 1 watt ) Ohm current limiting resistance in series with the input 5V source to get a current of 240mA . All 4 batteries are connected in series while charging . when I read the voltage of the battery, it shows 1.26V ( 1 battery ) when charged fully and 1.1V when everything was drained !.
13.
:: : : : : The current which rings the telephone is alternating current, not the stated 48 volts of DC . Since it is a current loop, the phone company has a high enough resistance in series with the 48 volt battery to limit the current to a small fraction of an amp . ( I have measured around 39 milliamps from a 52 volt phone line ).
