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Using a single supply quad comparator LM339, LM239, LM2901, LM2901V, NCV2901, or MC3302, we can build a square-wave oscillator with simple circuit and formula. Here is the schematic diagram: We can build a square-wave oscillator with simple circuit and formula, using a single supply quad comparator LM339, LM239, LM2901, LM2901V, NCV2901, or MC3302. Following figure [...]

A square wave oscillator with simple circuit and formula can be build using a single supply quad comparator LM239, LM339, LM2901V, LM2901, MC3302, or NCV2901 as the following : This circuit is very useful whenever you need more than one square-wave oscillator in one circuit. This is because the squad packaged comparator provide four comparators [...]