Rain sound generator circuit

Published:2012/8/21 22:43:00 Author:Ecco | Keyword: Rain sound generator | From:SeekIC

The circuit is very simple, and it is composed of common elements, it includes two oscillators: one is a variable low frequency oscillator which uses single-junction transistor VT1 (2N2646), VT1 can generate oscillation circuit without resonant coil, the circuit is shown in Figure 10-4. The other oscillator and IC1 (555) constitute a multivibrator. IC1 work depends on the conduction conditions of the single-junction transistor VT1. This circuit can produce a new type of rain sound. The power supply uses 9V, 500mA winding power step-down transformer, and the power is rectified by four 1N4002 diode, filtered by 1000μF and 16V filter capacitor to become DC power supply.



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