This game was found in an old Popular Electronics. The unijunction transistor can be 2N2646. The supply can be done with voltages from 6 to 12 V.
This circuit was found in an American 1980s documentation. Transistors can be commonly used for...
This regulator provides a regulated output voltage of 48 V under a current of up to 1 A from a 60...
The integrated circuit used in this filter is not very common today, but the configuration can be implemented...