Re: [CAD_CAM_EDM_DRO] Re: Was Chopper circuit - Now ver 3.2

----- Original Message -----
From: "mariss92705" <mariss92705@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Sunday, April 07, 2002 8:43 PM
Subject: [CAD_CAM_EDM_DRO] Re: Was Chopper circuit - Now ver 3.2


> Tim,
>
> Haven't thought about it because the idea just ocurred. It would just
> be the power section lifted from the G201/G320 so it would be quick
> and easy. Here goes though:
>
> 8 IRF540 .36 2.88
> 4 IR2104 .90 3.60
> 1 .56uF .18 .18
> 1 100uF .22 .22
> 2 0.05 Ohm .32 .32
> 1 4-layer pcb 1.20 1.20
> 1 Hard Ano Plate 1.00 1.00
> ? 0805 SMT R,C .15 .15
> Pick&Place time .25 .25
> Hand Assemby 1.50 1.50
> ----------------------------
> Subtotal $11.30
> Total = 3 * Subtotal $33.90
>
> Solder the thru-hole parts in yourself: $29.40
> Buy your own thru-hole parts (DigiKey): $15.60
>
> Quick and dirty, that's what I come up with.
>
> Mariss
>
> --- In CAD_CAM_EDM_DRO@y..., "Tim Goldstein" <timg@k...> wrote:
> > Mariss,
> >
> > What would the projected cost be? I would likely be interested and
> would
> > prefer it as a dual bridge.
> >
> > Tim
> > [Denver, CO]
> >
> >
> > > -----Original Message-----
> > >
> > > Hi,
> > >
> > > Just an errant thought here. Would anyone be interested if I were
> to
> > > cobble-up a single or dual bridge, all n-channel MOSFET (TO-220,
> > > IRF540) power driver? This would be on a 4-layer PCB and include
> all
> > > necessary supply bypassing, TTL input interface and a current
> sense
> > > resistor.
> > >
> > > This way, those who may want to "roll their own" would not have
> to
> > > deal with the tricky power stage. This would be maybe 10A and 0
> to
> > > 80VDC.
> > >
> > > Mariss
> > >
> > >
> > > Addresses:
> > > FAQ: http://www.ktmarketing.com/faq.html
> > > FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/
> > >
> > > OFF Topic POSTS: General Machining
> > > If you wish to post on unlimited OT subjects goto:
> > > aol://5863:126/rec.crafts.metalworking or go thru Google.com
> > > to reach it if you have trouble.
> > > http://www.metalworking.com/news_servers.html
> > >
> > http://groups.yahoo.com/group/jobshophomeshop I consider this as a
> > sister site to the CCED group, as many of the same memembers are
> there,
> > for OT subjects, that are not allowed on the CCED list.
>
>
> Addresses:
> FAQ: http://www.ktmarketing.com/faq.html
> FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/
>
> OFF Topic POSTS: General Machining
> If you wish to post on unlimited OT subjects goto:
aol://5863:126/rec.crafts.metalworking or go thru Google.com to reach it if
you have trouble.
> http://www.metalworking.com/news_servers.html
>
> http://groups.yahoo.com/group/jobshophomeshop I consider this as a
sister site to the CCED group, as many of the same memembers are there, for
OT subjects, that are not allowed on the CCED list.
>
>
>
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