This circuit was found in a 90s Electronic Engineering. The circuit has the tube's critical element. Operational amplifiers support equivalents.
This Linear Technology cold cathode fluorescent circuit operates on power from 4.5 V. The...
This circuit was found in a 90's EDN. It can be implemented with either TTL or CMOS logic and used...
The critical components for this 1970s project are transformers. The original transistors are made...