This circuit is one of many that can be found in this section using the 555. This circuit was found in old American documentation being applied to cars that use contact breaker.
Found in a 1968 EEE, this circuit accepts frequencies from 1 to 1000 Hz and control voltages from 0.1 to...
This circuit has appeared several times on this site in different applications. This is from 1997...
This setting appears other times in this section from other sources. This is from an 80's American...