This circuit was found in an old Poptronics. Operational amplifiers can be replaced with equivalents. The power supply must be symmetrical.
This 2001 CMOS digital circuit draws numbers from 00 to 99 and can be expanded. However, it does...
This circuit is from a Hands-On Electronics from the 90s. The integrated amplifiers used are well...
We found this digital CMOS circuit in a documentation from the 90s. The circuit generates signals...