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.