FIELD: microelectronics. SUBSTANCE: device has multivibrator which is made from transistors. When circuit is switched on by means of button, multivibrator is driven to self-oscillating state. Loudspeaker outputs sound oscillations. Simulation of voice of specific animal is achieved by means of soft closing of control transistor. EFFECT: decreased size. 1 dwg
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0 |
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Authors
Dates
1997-12-10—Published
1996-03-21—Filed