Found in a 1968 EEE, this circuit accepts frequencies from 1 to 1000 Hz and control voltages from 0.1 to 15 V. The operational amplifier is from the era and can be replaced by modern equivalents.
This circuit was found in a 1987 magazine. It generates signals in a range from 100 kHz to 10 MHz,...
This circuit, which can generate voltages up to 25 V, was found in the December 1992 issue of...
The circuit is from an Electronics Hobbyst Handbook from the 90s, being valid for panels of the...