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.
We found this circuit in a 1967 Japanese technical magazine. The transistors are made of germanium at...
This two-transistor radio was found in a Japanese publication from the 1960s, with no information on the...
The purpose of this circuit is used in communications and to respond to signals that are in the 2...