[work on progress...]
Pulse Transformer Replacements
Replacing pulse transformers is a little bit trickier than it could seem. Thus, choosing a component that can be pin-to-pin replaceable takes an important value.
In previous design a three or even four windings transformers where used. Now, for this board, two 1:1 coupled inductors do the job. This is a little big thing in terms of ease of replacement: where we had to be dealing with particular ratios and several windings is now a simple 1:1 ratio conversion (apart from the choice of the correct primary inductance and taking care of the saturation current).
Factors to take care of
Primary Inductance
Coupling Ratio
Saturation Current
Vus product
Models pin-to-pin compatible models
• Pulse Electronics PF0552 series
• Coilcraft MSD1278 series
• Coiltronics DR74 and DR125 series
• BH Electronics L10-1034