That LT supply is nice, but pretty expensive at ~$200 and you still need an input DC source!
If you read the sub-sequent post after that review post, there was a post made by Linear Technology's staff (I believed), that the BOM cost was just < $50
![Roll Eyes ::)](https://www.eevblog.com/forum/Smileys/default/rolleyes.gif.pagespeed.ce.XcUK202Yqt.gif)
, they deliberately put a hefty price tag to wade off PSU hoarder like me
![Evil >:D](https://www.eevblog.com/forum/Smileys/default/xevil.gif.pagespeed.ic.tdrs7Uj5gu.png)
, usually they gave these for free for their big customers for evaluation.
BTW I think what UniSoft has done with these is great, so hat's off ![ThumbsUp :-+](https://www.eevblog.com/forum/Smileys/default/icon_smile_thumbsup.gif.pagespeed.ce._JElyJQqdB.gif)
Yep, UniSoft 's great work made a trickling sensation teasing me to buy this Ruideng bench PS, I'm a bench PSU hoarder btw
![Face Palm :palm:](https://www.eevblog.com/forum/Smileys/default/xfacepalm.gif.pagespeed.ic.EBDwh1hCfo.png)
, own many quality bench PSUs like HP, Kenwood, Kikusui, Thurlby Thandar, Nemic Lambda, but all of those are beefy big and heavy.
![Roll Eyes ::)](https://www.eevblog.com/forum/Smileys/default/rolleyes.gif.pagespeed.ce.XcUK202Yqt.gif)
Just imagining "if" Ruideng made the linear pre-regulating series "good enough" , I'm intrigued what if this tiny little gadget coupled with high power density converter like made by Vicor, as I have plenty in my disposal
![Tongue :P](https://www.eevblog.com/forum/Smileys/default/xtongue.gif.pagespeed.ic.J5mTe0A2NA.png)
, may be the size of computer's optical drive with 500 Watt capable bench PSU ? or even smaller ?
![Confused :-//](https://www.eevblog.com/forum/Smileys/default/confused0024.gif.pagespeed.ce.5xOqKkq0Co.gif)