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

Test setup: Plug board, cable with USB-A plugs and pins, resistor 1 kΩ, red LED, 

electrolytic capacitor, 1,000 µF
The preceding setup is expanded by the electrolytic capacitor. The connection 

wires of the electrolytic capacitor point to the plus pole rail of the plug board with 

their plus poles. If the electrolytic capacitor is plugged in correctly, plug the USB 

plug into the USB plug-in mains adapter. The LED lights up. Disconnect the USB 

plug from the USB source. The red LED will continue to be lit for a short time 

although the power supply has been interrupted. The power is interim-stored in the 

electrolytic capacitor.
 

Fig. 016: Plug board with storage electrolytic capacitor

Fig. 017: Circuit diagram