VARIABLE_SQUARE_TRIANGLE_

Published:2009/7/6 21:30:00 Author:May | From:SeekIC

Dual pot R1-R3 varies frequency over range of 15-500 Hz when C1 is in circuit and 150-4800 Hz when C2 is in circuit. Each output has amplitude control.Opamps are Motorola MC3401P or National LM3900, and transistors are 2N2924 or equivalent NPN. Supply can be 12 VDC.-C. D. Rakes, Integrated Circuit Projects, Howard W. Sams, Indianapolis, IN, 1975, p 19-20.



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