For low-frequency signals, this circuit transforms a single oscilloscope into a dual-trace. The circuit is from Radio Electronics magazine, October 1984.
This circuit generates sinusoidal and cosine signals of 2 kHz given basically by the values of C1...
This circuit was found in a Dutch documentation from 1970. The circuit makes use of semiconductors that...
This circuit has both frequency and duty cycle control. We found it in the October 1992 Radio...