Runo's Power Design
My job may consist of everything
from a few consultant hours concerning circuits that
troubles you - to total electrical designs including PCB
layout and maybe EMC test.
Before starting larger tasks I usually enter into a written
agreement with my customer, in which our expectations to
the co-operation is written down.
A "total" design typically
can assist in compiling a requirement specification for the new
Choice of switchmode
topology: flyback, buck, half bridge, push-pull, resonance
Calculations and choice of
key figures by means of home designed mathcad worksheets.
First circuit diagram,
construction of a "bird's nest" and
winding of the first transformer etc.
adjustment and improvements of the "bird's
nest" and updating of the circuit diagram.
A winding specification for
the transformer is worked out.
A parts list or key
component list with proposals for suppliers is
Often it is a good
investment to let me assist with your first PCB
If desired, I can do a
preliminary measurement of conducted and radiated emission on
the "bird's nest" or the first
request, my work can be finished with a
report in Danish or English, containing circuit
description, calculation results, typical
oscilloscope pictures, measurements in the test
circuit and other relevant information.