Elenco | 6SCU2 | Owner Manual | Elenco 6SCU2 Alarm IC Owner Manual

Elenco 6SCU2 Alarm IC Owner Manual
More about the ICs in Snap Circuits
Although Snap Circuits includes several parts that
are called integrated circuits, they are actually
modules containing a number of parts. The modules contain specialized sound-generation and
amplifier ICs and other supporting components
(resistors, capacitors, and transistors) that are
always needed with them. This was done to simplify the connections you need to make to use
them.
Music IC
Alarm IC
The music IC module contains sound-generation
ICs and supporting components. It can play several musical tunes that are recorded in it. Its actual schematic is complex and looks like this:
The alarm IC module contains a sound-generation IC and supporting components. It can make
several siren sounds. Its actual schematic looks
like this:
Its Snap Circuits connections are like this:
Its Snap Circuits connections are like this:
(+)
IN2
TRG
HLD
IN1
IN3
(–)
OUT
(–)
OUT
Music IC:
(+) - power from batteries
(–) - power return to batteries
OUT - output connection
Alarm IC:
HLD - hold control input
TRG - trigger control input
IN1, IN2, IN3 - control inputs
(–) - power return to batteries
OUT - output connection
Music for ~20 sec on power-up, then hold HLD to (+) power or touch
TRG to (+) power to resume music.
Connect control inputs to (+) power to make five alarm sounds.
This module has two different control inputs. The
OUT connection pulls current into the module (not
out of it), usually from a speaker. This current is
adjusted to make the music. Snap Circuits projects 15 and 16 show how to connect this part and
what it can do.
This module has three control inputs, and can
make five siren sounds. The OUT connection
pulls current into the module (not out of it), usually from a speaker. This current is adjusted to
make the siren sounds. Snap Circuits project 17
shows a simple way to connect this part, and projects 113-117 show the connections needed to
make the five possible sounds.
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