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Project #290
OBJECTIVE: To amplify sounds from the music
Build the circuit and turn on the switch. You will hear loud music, since
the sound from the music integrated circuit is amplified by the power
amplifier integrated circuit. All radios and stereos use a power
amplifier.
Music Amplifier
Project #291 Delayed Action Lamp
OBJECTIVE: To build a lamp
OBJECTIVE: To build a
fan that stays on for a
Replace the lamp (L2) with the
motor (M1), positive (+) side up.
Be sure to put on the fan. Turn on
the switch and press the press
switch (S2). The fan turns on
slowly but stays on for a while
after you release the press
switch.
Be sure to use the 6V lamp (L2) for
this circuit. Turn on the switch and
press the press switch (S2). The
lamp turns on slowly but stays on for
a long while after you release the
press switch.
Project #292
Delayed
Action Fan
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