We found this circuit in a 1980s American documentation. The operational amplifiers of the integrated circuit used can be common types in an experimental setup.
This circuit can be used to test zener diodes up to 25 V using a standard multimeter. The voltage...
This TTL traffic light circuit was found in an English magazine from 1977. The magazine no longer...
This circuit is from National Semiconductor documentation. The operational amplifier is of the...