Circuit diagram for wave generator

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SquareTriangle555.gif

The circuit shown produces a pretty good square wave (10 V peak-to-peak) able to drive a low impedance load, and a slightly curved triangle wave of lower amplitude, and only able to drive a high impedance load.


The 555 "timer" chip in the figure is shown with its pins in the actual DIP8 layout (pin 1 is upper left)


The time constant is T = R1 * C1, which here would be 100uS. I measure a repetition rate of 3KHz.

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