We found this circuit in a 1964 Electronic Design. The triac and SCR can be replaced with modern equivalents according to the load. The circuit is for 160V network.
These basic bass controls were obtained from an article in Electronics Now magazine in February 1995....
We found this circuit in a 1994 publication. It makes use of a divider for 16 384 CMOS type 4060. By...
Found in a 90’s Electronic Design, this circuit generates stable signals in frequency given by the...