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Steam Engine Sound Generator MK134

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Price:
$13.95
SKU:
0025J
Weight:
2.000 Ounces
Current Stock:
3


Product Description

Actually a sophisticated all-analog circuit that incorporates a noise source and filtering to generate the engine sound and a pushbutton-activated whistle. The schematic and assembly instructions are here. Runs on a 9-volt battery. A small speaker is included


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