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199. Parallel connection of electric motor, LED and bulb
Assemble the circuit. Close breaker
15
(ON). The electric motor will start to rotate, and the LED
will light up. Press button
14
– the bulb will light up, but the sound of the electric motor will
change – it will rotate a little slower. The brightness of the LED will also decrease slightly.
200. LED influence test
Swap bulb
18
and LED
17
("plus" to the left). Close breaker
15
(ON). Press button
LED will light up, but the bulb and the electric motor will work without changes. This means that,
unlike a bulb, an LED consumes a small current and practically doesn't affect the operation of the
electric motor; it is therefore more advisable to choose it as an indicator of operation.
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201. Race car sound
15
Assemble the circuit. Close breaker
(ON). The LED will light up, but the motor won't rotate.
Bring the magnet to reed switch 13. The LED will go off, the electric motor will start, and the
sounds of a sports car will be heard from the speaker. Replace reed switch
the sound can now be controlled by pressing a button.
14
– the
13
with button 14,
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