skal1 wrote:sorry can not post circuit not my property, this is the reason i want to design my own psu.
, ok found the 5687 data so how do i work out the current draw of 1 5687 at 250vdc.
skal1
Go to the bottom of this data sheet ! Gives date for anode voltage of 250V, but bear in mind anode voltage is voltage on anode minus voltage on cathode ! Gets complicated eh ?