This amplifier with gains between 5 and 100 was found in the May 1988 issue of Radio Electronics magazine. The circuit requires a symmetrical power supply.
This 4-digit digital clock for hours and minutes with CMOS integrated circuits was found in a 1995...
This mixer or 4-channel mixer was found in a 1986 documentation. It uses two Ibrape stages sold in...
This 4-function, high-pass, low-pass, band-pass and rejector filter was found in French...