Hardly 2 fans in series.
Jim W7RY
On Mon, Jan 25, 2010 at 6:09 PM, <vk3pa@vk3pa.com> wrote:
> Quoting James Colville <jimw7ry@gmail.com>:
> EMTRON uses 2 fans one under the tube blowing es the other a pc type
> fan on top
> sucking..
>
>
> > Fans in series? How are you going to figure the airflow out? Just use a
> > single BLOWER like 100% of the other amp builders use? What tube or
> tubes?
> >
> > 73
> > Jim W7RY
> >
> >
> >
> > On Mon, Jan 25, 2010 at 12:28 PM, MIKE DURKIN <patriot121@msn.com>
> wrote:
> >
> >>
> >> Ok, yea its not for VHF, Just HF but was thinking about parasitics and
> all
> >> ....
> >>
> >>
> >>
> >> Next thought is there a rule of thumb when stacking fans back-to-back to
> >> figure CFM and pressure ....
> >>
> >> Like if i had 2 fans with 98.1CFM/0.28" blowing in series?
> >>
> >>
> >>
> >> Mike
> >>
> >> KC7NOA
> >>
> >>
> >>
> >>
> >> snip>
> >> > Hi Mike,
> >> >
> >> > > I'm wanting to supply the tube on one side of the tube and put the
> >> blocking cap for the C.L.C. output
> >> > about 110Deg off around the tube. Will that make for any internal
> issues
> >> ETC. from
> >> > misbalance on the Anode ??
> >> >
> >> > If I understand you correctly, looking down at the tube, the HV supply
> >> (connection to
> >> > the anode RF choke) is at 12 o'clock, and the blocking capacitor to
> the
> >> output tank
> >> > comes off at about 4 o'clock (or 8 o'clock). If that's what you mean,
> >> that should be
> >> > fine. (Unless you're working at VHF or UHF frequencies... then I don't
> >> have a clue as
> >> > to whether it's OK.)
> >> >
> >> > 73,
> >> >
> >> >
> >> >
> >> > George T Daughters, K6GT
> >> > CU in the California QSO Party (CQP)
> >> > October 2-3, 2010
> >> >
> >> >
> >>
> >>
> >> _________________________________________________________________
> >> Hotmail: Trusted email with powerful SPAM protection.
> >> http://clk.atdmt.com/GBL/go/196390707/direct/01/
> >> _______________________________________________
> >> Amps mailing list
> >> Amps@contesting.com
> >> http://lists.contesting.com/mailman/listinfo/amps
> >>
> > _______________________________________________
> > Amps mailing list
> > Amps@contesting.com
> > http://lists.contesting.com/mailman/listinfo/amps
> >
>
>
> _______________________________________________
> Amps mailing list
> Amps@contesting.com
> http://lists.contesting.com/mailman/listinfo/amps
>
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
|