in direction of an alternating current can be observed in a circuit
with a alternative generator, two LEDs connected in parallel and
opposite directions and a resistor to protect the LED.
- A bypass LED lets current pass and shines.
- A blocking LED doesn't let current pass and doesn't shine.
We observe in this circuit that one of the diodes shine while the other
Regularly the situation is reversed: the LED that shone goes off while
the other LED lights up.
The two LEDs
are connected in opposite directions and when
one is in the direction from the other is
the current direction
is reversed the blocking
LED allows current to flow and the
one that was in the
forward direction becomes
- When changes of direction are too fast, the blinkings are no longer
perceptible to the human eye and LEDs seem to shine continuously.
- The small wave below the symbol of the generator is the symbol for an