Simple d.c. to d.c. converter
To keep the converter simple, it contains no preset controls, which means
that the level of the output voltage is dependent
to some degree on the load. In
theory, the output level is twice the level
of the input voltage, but, owing to losses
in the converter, that level cannot be attained.
The main lasses occur at the
semiconductor junctions of the transistors
and the rectifier diodes. Since the
drop at these junctions is constant at
about 0.6 V, the losses are proportionally
larger with an input voltage of 6 V
than with one of 18 V.