Re: Power Controller Kit Progress
- One question was about the board production process. I am using
toner, inkject photopaper, and heat transfer to put the pattern on
the copper. Removing the paper from the toner with boiling soapy
water. Etching the copper with half and half by volume 37% muriatic
acid and 3% hydrogen peroxide in a well ventilated out doors area.
Second question about insulating hardware, I selected parts with
isolated, electrically dead tabs. Alternistors use glass passivation
which insulates to 2500v rms between the thyristor chip and the metal
--- In Distillers@yahoogroups.com, "Sven Pfitt" <the_gimp98@...>
> You are showing uninsulated power tab devices, but don't mention
> isolation from the heat sink.
> In addition to the silicon heat sink compound, an insulating spacer
> insulated mounting hardware should be used for assembly, otherwiseyou
> will have a short between the two tabs. Unless they are at the sameI'll
> electrical potential, this could be a big problem.
> --- In Distillers@yahoogroups.com, "Sherman" <pintoshine@> wrote:
> > http://www.amsyrup.com/sloj/projects/kit/catalog.htm
> > It is coming together. I would appreciate any suggestions on the
> > documentation. Whenever I get the docs created using real parts
> > pack it up as a pdf. I will also post a video somewhere of acompleted
> > working unit as soon as possible.