Ultralow Frequency Sawtooth Wave Generating Circuit

Published:2011/7/17 10:22:00 Author:Michel | Keyword: Ultralow Frequency, Sawtooth Wave, Generating Circuit | From:SeekIC

The above picture is a ultralow frequency sawtooth wave generating circuit.In order to perform the low frequency oscillation, positive and negative double power supply are provided.If VT1 pluses negative pulse signal, the VT1 stops, VT2 conducts, the power supply charges C1 via VT2.VT1 base potential rises as the charging current declines,VT1 conducts,VT2 stops at the same time.Meanwhile,C1 discharges via R1 and RP1 until VT2 conducts.Because R1 and RP1 determine VT2 conduction potential,the linear is output.0005 hz to dozens of KHZ oscillation frequency can be gotten when the C1 and (R1 + RRP1) value are changed.



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