The circuit shown is from 1994 National Semiconductor documentation but can be implemented with more modern operational amplifiers. The power supply must be symmetrical.
This circuit with two operating modes was found in the September 1989 issue of Radio Electronics...
This TTL divider divide by 0 to 9 the frequency of a signal applied to its input. Maximum...
This circuit can be used for signaling a panel with a common incandescent lamp. The lamp will...