5578Re: [solectria_ev] Isolating a Solectria DC-DC converter
- Aug 10, 2009I traced out the circuitry on the Solectria DCDC750. If I haven't
made any mistake, it's like this:
HV+ -- C3 -- R4 -- Case
HV- -- C2 -- R3 -- Case
12V+ -- C5 -- Case
12V+ -- R2 -- Case
12V- -- C4 -- Case
12V- -- R1 -- Case
C2-C5 are 0.2mfd. R1,R2 are 1 megaohm. R3,R4 are 1 ohm.
In addition there are much higher value capacitors across the input
and across the output.
The purpose of the stuff above is hard to fathom, especially since in
normal use the 12V- output will be connected to the case. In any
event, I left the low voltage stuff alone and removed R3 and R4 to
disconnect the high-voltage side from the case and the 12V.
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