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Date: 05 Dec 2006 22:15:52
From: Robert Harmon
Subject: HELP: The pump for an old style Gaggia Coffee,...
...the one with the steam valve in front, had a diode between the line
power & the pump. I can't find a reference to what diode is needed. My
memory is telling me it's a '4006' but my memory gets me in too much
trouble to be believed. Anyone have a difinitive answer?

Robert (duck & cover) Harmon
--
http://tinyurl.com/pou2y
http://tinyurl.com/fkd6r
Remove "Z" to reply via email.




 
Date: 06 Dec 2006 11:25:34
From: daveb
Subject: Re: The pump
yeah, 25 year old pumps are always a good bet.

DUH.

and is that 5 cent diode a delivered price?

please go back to the many other boards you visit.

n00bie wrote:
> uh huh let's see: cost of diode at mouser $0.05, versus cost of replacement
> pump .



  
Date: 06 Dec 2006 13:09:24
From: n00bie
Subject: Re: The pump
[top posting so as not to confuse dave]
My guess is that for a total charge of around $5.05 you could get a 1N4007
delivered, versus a pump delvered? u'd be lucky 2 get even the delivery for
that, let alone the cost of the pump. If delivery is such a high cost 4 you,
walk over to Radioshack and buy a 25 pack of these diodes for $2.59. Now how
much for 25 pumps in walking distance? No contest.

OTOH the OP wasn't asking for a pump, he was asking 4 a diode.

Sigh.
"I'm sorry sir you need a new tire on that car, but there's really no point
in putting a tire on that old heap, buy a new car instead, that old heap may
not get you around the next block. A new car (which has new tires included)
will only set you back $10,000+..."

...and the hoobub he bought and I'm sorry to say that grinches sell hoobubs
such things every day.
(excerpt from "the hoobub and the grinch" with no apologies to the late Dr
Seuss)


"daveb" <davebobblane@gmail.com > wrote in message
news:1165433134.923649.10960@80g2000cwy.googlegroups.com...
> yeah, 25 year old pumps are always a good bet.
>
> DUH.
>
> and is that 5 cent diode a delivered price?
>
> please go back to the many other boards you visit.
>
> n00bie wrote:
> > uh huh let's see: cost of diode at mouser $0.05, versus cost of
replacement
> > pump .
>




 
Date: 06 Dec 2006 11:21:49
From: daveb
Subject: Re: The pump
yeah, 25 year old pumps are always a good bet.


DUH.



 
Date: 06 Dec 2006 07:22:21
From: daveb
Subject: HELP: The pump
just put in a new pump.

dave

Robert Harmon wrote:
> ...the one with the steam valve in front, had a diode between the line
> power & the pump. I can't find a reference to what diode is needed. My
> memory is telling me it's a '4006' but my memory gets me in too much
> trouble to be believed. Anyone have a difinitive answer?
>
> Robert (duck & cover) Harmon
> --
> http://tinyurl.com/pou2y
> http://tinyurl.com/fkd6r
> Remove "Z" to reply via email.



  
Date: 06 Dec 2006 09:03:25
From: n00bie
Subject: Re: The pump
uh huh let's see: cost of diode at mouser $0.05, versus cost of replacement
pump $40+... now which way will I go, this is soooo hard

"daveb" <davebobblane@gmail.com > wrote in message
news:1165418540.977597.195050@f1g2000cwa.googlegroups.com...
> just put in a new pump.
>
> dave
>
> Robert Harmon wrote:
> > ...the one with the steam valve in front, had a diode between the line
> > power & the pump. I can't find a reference to what diode is needed. My
> > memory is telling me it's a '4006' but my memory gets me in too much
> > trouble to be believed. Anyone have a difinitive answer?
> >
> > Robert (duck & cover) Harmon
> > --
> > http://tinyurl.com/pou2y
> > http://tinyurl.com/fkd6r
> > Remove "Z" to reply via email.
>




 
Date: 05 Dec 2006 22:39:35
From: I->Ian
Subject: Re: HELP: The pump for an old style Gaggia Coffee,...
On Tue, 05 Dec 2006 22:15:52 GMT, Robert Harmon
<r_h_harmon@Zhotmail.com > wrote:

>...the one with the steam valve in front, had a diode between the line
>power & the pump. I can't find a reference to what diode is needed. My
>memory is telling me it's a '4006' but my memory gets me in too much
>trouble to be believed. Anyone have a difinitive answer?
>
>Robert (duck & cover) Harmon

If the pump is DC powered, then you need a diode capable of handling
the current of the pump, plus a safety gin.

Assuming a ~50w pump, that's about 1/2amp, so a 1N4006 should work.

1N4006 handles 6A continuous 800V Reverse voltage.


  
Date: 05 Dec 2006 15:01:38
From: Johnny
Subject: Re: HELP: The pump for an old style Gaggia Coffee,...

"I- >Ian" <someone@nowhere.com> wrote in message
news:23tbn2pis77ihnhjiba0tb2a1tqs9brc13@4ax.com...
> On Tue, 05 Dec 2006 22:15:52 GMT, Robert Harmon
> <r_h_harmon@Zhotmail.com> wrote:
>
> >...the one with the steam valve in front, had a diode between the line
> >power & the pump. I can't find a reference to what diode is needed. My
> >memory is telling me it's a '4006' but my memory gets me in too much
> >trouble to be believed. Anyone have a difinitive answer?
> >
> >Robert (duck & cover) Harmon
>
> If the pump is DC powered, then you need a diode capable of handling
> the current of the pump, plus a safety gin.
>
> Assuming a ~50w pump, that's about 1/2amp, so a 1N4006 should work.
>
> 1N4006 handles 6A continuous 800V Reverse voltage.

Ian, I think you may have mis-typed, the 1N4001-4007 series are all rated at
1A as far as I know.




   
Date: 06 Dec 2006 00:00:09
From: I->Ian
Subject: Re: HELP: The pump for an old style Gaggia Coffee,...
On Tue, 5 Dec 2006 15:01:38 -0800, "Johnny"
<removethis.huuanito@hotmail.com > wrote:

>
>Ian, I think you may have mis-typed, the 1N4001-4007 series are all rated at
>1A as far as I know.

Mea Culpa, it is 1A continuous, 30A peak.

Perhaps a bit light for starting a 50W[?] DC motor.


    
Date: 06 Dec 2006 01:24:19
From: Coffee for Connoisseurs
Subject: Re: HELP: The pump for an old style Gaggia Coffee,...
1N4007 is the one.


--
Alan

alanfrew@coffeeco.com.au
www.coffeeco.com.au




     
Date: 06 Dec 2006 01:29:56
From: I->Ian
Subject: Re: HELP: The pump for an old style Gaggia Coffee,...
On Wed, 06 Dec 2006 01:24:19 GMT, "Coffee for Connoisseurs"
<alanfrew@coffeeco.com.au > wrote:

>1N4007 is the one.

Here's the data sheet.
http://www.fairchildsemi.com/ds/1N/1N4007.pdf