Velleman EDU02 - Manual (Page 6)

6 www.vellemanprojects.com
Diode
Diodes allow the current to flow in only one direction, from
(+) to (–). Current flow in the opposite direction is blocked.
(Velleman part# BAT85)
Battery holder
Holder for two AAA rechargeable batteries. Mind the polarity
(Velleman part# BH421A)
A special case: Zener diodes
Zener diodes allow the current to
flow from (+) to (-), as regular diodes
do. If you invert the polarity, they
drop a certain voltage, which can be
found on the body of the zener
diode, e.g. 2V4= 2.4V
(Velleman part# ZA2V4)
Re
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Bla
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