The 555 quadruple frequency multiply circuit

Published:2011/7/20 7:28:00 Author:Seven | Keyword: quadruple frequency, multiply circuit | From:SeekIC

This multiply circuit can convert the period sequence of f1 into output pulse signal of f0=4f1, which is a quadruple frequency circuit, see as figure 5-42. The circuit includes the differentiation twice frequency circuit, single stable timing circuit and double frequency circuit and so on. VT1, R1, C1, C2 and R2 compose the phase inverting amplifier and differentiation circuit. C2, R2 and C1, R2 compose the differentiation circuit which forms 2 undershoot narrowing pulses, the first doubling is done at the collecting electrode of VT2.



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