coll circuit

This circuit contains six square wave oscillators. Square waves are made up of a large collection of harmonics. If six square waves with different frequencies are introduced together, the end result will possible be a signal with an extraordinarily large collection of frequencies. When you take heed to the result you’ll find that it is rather much like a steam whistle. The circuit will have to be useful in modelling and even in a sound studio.

Simple Steam Whistle Circuit Diagram

This circuit uses best two ICs. The first IC, a 40106, comprises six Schmitt set offs, that are all configured as oscillators. Different frequencies are generated by means of completely different remarks resistors. The output alerts from the Schmitt set offs are mixed via resistors. The ensuing signal is amplified by means of IC2, an LM386. This IC can deliver about 1 W of audio power, which will have to be adequate for most utilitys. If you allow out R13 and all parts after P1, the output can then be connected to a extra powerful amplifier. In this manner a very deafening steam whistle can be created. The ‘frequency’ of the sign may additionally be adjusted with P2, and P1 keep an eye ons the volume.

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