This converter was found in the June 1991 issue of Radio Electronics magazine. The circuit uses common circuits at the time and its operating range can be changed.
This excellent circuit came out in a Japanese publication from 1971. It uses Japanese transistors of the...
This circuit is a little more elaborate with the previous one (CB19402E). The operational...
This circuit was found in a 1994 documentation, but it can be easily assembled today, as it uses...