>When the hole is covered there will still be ample flow through the
>high-tec calibrated paper tissue flow limiter.
This approach for a fixed vacuum setup or simply reducing the vacuum,
where adjustable, limits you in terms of the size/weight range of
components that can be handled without having to fiddle with the
settings. With it setup to release 0402 - 1206 components cleanly, for
example, you're going to find that the vacuum might not be enough to
handle heavier ICs without dropping them.
A "finger" toggle switch on the pen or a foot toggle switch that
directly or indirectly controls the pump (on/off) is the best way to
go. That way the vacuum can be set to handle the heaviest components
without dropping and still release the lightest cleanly. Basically,
that's the way an automatic pick & place machine works with the switch
under software control. Manual ones typically use a foot switch. At
least mine does.
--- In
Homebrew_PCBs@yahoogroups.com, "Stefan Trethan"
<stefan_trethan@...> wrote:
>