Detailed Product Description

This product mainly groups the experiment for the junior middle school physics teaching
student to make the low pressure direct-current power supply use, the output
has the over-load protection function, when output overload the automatic shut-off,
and can start is not bigger than the nominal current by the incandescent
lamp and so on the instant starting current big experimental electric appliances,
is the ideal teaching necessary power source, if may replace the small battery
charger in the out-port series connection ampere meter and the rheostat to carry
on the charge to the small accumulator cell.