Instructions

41
Bridge circuit
A bridge circuit consists of two series connections and one
component between the two. On the left, the series connection
contains a resistor and the flashing LED. On the right, there is
a resistor and a switch. An LED is located between the resistor
and switch forming the bridge. The question arises: Is the
tension higher on the left or on the right? The green LED can
only shine once the flashing LED on the left is shining and the
switch on the right is off. Only then is the voltage on the right
greater than on the left, allowing current to flow through the
green LED.
22 An automatic colour-changing LED
The automatic colour-changing LED contains three LEDs in
red, green and blue. Because it has a clear housing, you
can use the front rounding as a magnifying glass and view
everything in the off state in high magnification. The silicon
chip with complicated structures and the thin wires to the
three LED crystals are clearly recognisable. The colour-chang-
ing controller turns the three LEDs on and off in rapid succes-
sion.