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Design of SMPS - Not sure what these spikes are being caused by.
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Zog:
Hi All,
I have given up trying to make this myself and need a pro to do it for me, preferably in Eagle. (paid job)
Need 100 Watts.
Anyone interested ?
ocset:
Your vout is 185VDC
Your Pout is 100w
Your vin is =12v?

Have you thought of the dual cascaded boost?
Ill  send you some stuff on it if you want.

(I am working through the three pages to see where you got stuck....i saw you were wondering about winding a tapped inductor at one point, and at one point you were speaking of a noise issue.
, you gave a website of a cct you "copied"?...
https://jan.rychter.com/high-voltage-power-supply-for-nixie-tube-projects
)
MagicSmoker:

--- Quote from: Zog on August 17, 2019, 12:50:58 am ---Hi All,
I have given up trying to make this myself and need a pro to do it for me, preferably in Eagle. (paid job)
Need 100 Watts.
Anyone interested ?

--- End quote ---

Is this still for Nixie tubes, which require approximately 10mA each? So 100W would be good for around 50 of them?!?

Input voltage? Size constraints? Budget? I likely have something in my pile of past projects that can be easily modified for the job, and I use EAGLE 7.7 (ie - the last version before getting Borg'ed by Autodesk), but I am a bit busy for the next couple of weeks.


ocset:
If you give the input voltage, then ill send you a design, and you can see if you want to go on and do it yourself, or contact myself.

PCB layout doc attached...did you follow these rules?

I must admit im an eagle 7.4.0 user.

Also,  there is the cascaded boost, which i could modify for you if you wish...its as attached
Zog:
@treez
--- Quote ---If you give the input voltage, then ill send you a design, and you can see if you want to go on and do it yourself, or contact myself.
--- End quote ---
I don't have the skills to try to do it myself.

@treez
--- Code: ---Also,  there is the cascaded boost, which i could modify for you if you wish...its as attached
--- End code ---
Only text in that file ?

@MagicSmoker
--- Code: ---Input voltage? Size constraints? Budget? I likely have something in my pile of past projects that can be easily modified for the job, and I use EAGLE 7.7 (ie - the last version before getting Borg'ed by Autodesk), but I am a bit busy for the next couple of weeks
--- End code ---

Input voltage can be from 5VDC to 24VDC. Size ? about the size of a packet of cigarettes. Output Voltage 220VDC because I want to drive a doubler circuit to get 440VDC for Dekatrons.
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