Constant amplitude sawtooth wave generating circuit composed of the μA741

Published:2011/8/25 20:59:00 Author:TaoXi | Keyword: Constant amplitude, sawtooth wave, generating circuit | From:SeekIC

The constant amplitude sawtooth wave generating circuit composed of the μA741 is as shown in the figure. This circuit changes the input signal of the external oscillator into the square wave signal, and this signal changes into the pulse signal that can drive the VT1 grid electrode through RC(R4, C1) differential, the VT1 makes the integral capacitance Cs in the short-circuit state periodically, A2 outputs the constant amplitude sawtooth wave with the cycle of T. Now I briefly explain the method of setting circuit parameters. If the frequency of the external input oscillation signal is 50HZ (the corresponding period T is lOms), the VT1 conduction resistor is 2OOΩ.



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