Elenco Circuit Maker Sound Plus 200 - Manual (Page 44)

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Project #89
Project #88
Turn on the switch and press the press switch (S2). The lamp (L4) stays
on for a few seconds after you release the press switch.
A miniature version of a circuit like this might be in your wristwatch - when
you press a light button on the watch to read the time in the dark, a light
comes on but automatically turns off after a few seconds to avoid
draining the battery.
Watch Light
Adjustable
Time Delay Lamp
Turn on the switch and press the press switch (S2). The lamp (L4) stays
on for a few seconds after you release the press switch. You can change
the delay time with the adjustable resistor (RV).
CM-200_Manual_031914.qxp_CM-200_Manual_031914 4/2/14 12:04 PM Page 44