This two-year-80s circuit consists of a solution for a small portable recorder powered by cells, as it was used at the time. The circuit can serve as a reference for the recovery of old equipment.
This high voltage regulator uses only two passive components. The output is 100 V, but replacing...
This circuit was obtained in a magazine for radio amateurs 73 of the 90s. The circuit is based on...
This circuit is from an old operating manual and can be implemented with operationals types that...