Triangular Wave Sig Gen Evaluation - Part 1
The ICL8038 sig gen performance is disappointing, mainly because the signal is not too stable, therefore difficult for the scope to sync.
So I tried to use two NE555 timer, hoping to generate square wave and then use a RC low pass filter to convert square wave to sine wave. However, I found the cheapest 555 timer has a very limited frequency range, and the better 555 timer difficult to set desired frequency and duty cycle.
In other words, all three sig gen tried are not that usable. So I decided to tried the Schmitt trigger oscillator.
.END
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