I had a similar project and used what I had, a 35 amp, 1000v. Definitely overkill but you can buy 5 for $8 and these are rugged. The answer to your question is how much of what you need do you have around such as wire terminals a junction block, fuse, holder, capacitor, etc. If you have to buy it all plus shipping, might be better to buy the ho supply. A lot of folks buy computer charger power supplies, they are a bargain.
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