Based on the LTC3862, this circuit consists of a DC-DC converter capable of operating with input voltages lower than the desired output. MOSFET admits equivalent.
This 3V-only circuit was found in old American documentation, but can be implemented with...
The output voltage of this circuit, which can regulate the current in a load between 0 and 1 A,...
This circuit was found in a Popular Electronics from the 90s. The circuit has temperature...