Conrad Course material 10127 14 years and over 10127 Manual De Usuario

Test setup: Solar module, plug board, red LED, electrolytic capacitor 1,000 µF, 

transistor T1 2N3906, resistor 2.2 k, button switch, battery holder, rechargeable 

battery
In photovoltaic island systems, the entire current supply is gained by regeneration. 

The rechargeable battery storage stores this energy for later use. A charge cont-

roller ensuring that the rechargeable battery is as fully charged as possible without 

being overcharged is important for charging rechargeable batteries.

 
Fig. 058: Test setup of the charging controller on the plug board

In the test setup the control electronics are replaced by a wire button that you can 

operate manually. The longitudinal transistor T1 is controlled via its basis and cont-

rols the charging current and voltage via the collector-emitter section. The red LED 

shows when the charging current is flowing and flashes briefly when the button is 

pushed and energy flows into the rechargeable battery.