This 1-chip module can generate 9 different melodies. It is normally used as a doorbell, an acoustic signalling device or as a telephone "wait" melody.
Once switch S1 is pressed the IC plays the melodies one after the other. It will stop after the last melody when the JP1 terminal is connected to ground by a jumper.
Alternatively, when JP1 is connected to the +V, the IC will play continously as long as the switch
S1 remains closed. Combining several pins produces different effects as shown in Table 21.0. A single battery can be used to power this module since
its current consumption is negligible.
Parts Placement Layout
External Wiring Layout
Electronic Circuits volume 1.0 - Circuit Nr. 21
The complete data of the electronic circuit described above can be found in the following book and is available from Amazon.com.
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