Trapezoidal wave generator ( Figure 1.7 ) circuit

Published:2012/8/21 20:12:00 Author:Ecco | Keyword: Trapezoidal wave, generator | From:SeekIC

Trapezoidal wave's time t1 ~ t4 can be independently adjusted. Time t1 can be coarse tuned by capacitor C1 and fine tuned by potentiometer Rp. T2 is coarse and fine tuned by C2 and R2. t1 + t2 determines the period or frequency. t3 is changed by the potentiometer RP3, and its value is calculated according to t3 = CRE • UA / UE. RE is PNP transistor emitter resistance, UE is emitter voltage drop, UA is the magnitude of output voltage.



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