| Here is a simple
triangle/squarewave generator using a common 1458 dual op-amp that can be used for very
low frequencies to about 10 Khz. The time interval for one half cycle is about R*C and the
outputs will supply about 10 milliamps of current. Triangle amplitude can be altered by
adjusting the 47K resitor, and waveform offset can be removed by adding a capacitor in
series with the output. |