electricity.jpg (5852 bytes)

MAKING A LEAD-ACID CELL

(This demonstration has not been done in a LONG, LONG time.)



EQUIPMENT
    redball.gif (326 bytes) 1.5V Lamp
    redball.gif (326 bytes) 8 VDC Power Supply
    redball.gif (326 bytes) DPDT Switch
    redball.gif (326 bytes) Sulfuric Acid
    redball.gif (326 bytes) Lead Plates



NARRATIVE
            The lead-acid cell consists of two lead plates in a sulfuric acid solution. In the charge position of the DPDT knife switch, the cell is connected to the small, 8 VDC power supply. In the discharge position, the cell is connected to a 1.5V lamp. This connection may be made through an ammeter with a 5 amp shunt to show the amount of current in the circuit. (The ammeter is not usually used.) Do not apply excessive voltage to charge the cell, as arcing may result, and thus shorting the power supply.