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proj_01.php    4516 Bytes    23-04-2024 18:33:41


EPROM WAVE PLAYER


Now obsolete, but decades ago a leader ...





Voice Output Device



As in our lab every device is equipped with a beeper, nobody really knows, what went wrong if you hear a beeper somewhere. So I decided to give the devices a 'voice', telling our students what is wrong.

This device uses simple parts which are available almost everywhere. The PCB measures 100x160 mm. The devices is powered by 9 ... 15 V.

You need an Eprom-writer to successfully build this project.







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t1 = 6586 d

t2 = 181 ms

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