Half the price of a local stamp

Log in or register to post comments
Go To Last Post
19 posts / 0 new
Author
Message
valusoft
valusoft's picture
Level: Moderator
Joined: Sat. Jul 2, 2005
Posts: 15918 View posts
Location: Melbourne, Australia
#1
Posted by valusoft: Fri. Jan 8, 2016 - 12:51 AM
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

OK, OK,, maybe not half but our local postage stamp with 3 day delivery is AUD$1 now.

 

This DC/DC up converter rated at 2 amps is US$0.49 DELIVERED!!! I just had to order 10 pieces... cheeky

 

http://www.aliexpress.com/item/M...

 

Ross

Ross McKenzie ValuSoft Melbourne Australia

Tags:

Learning and Information, General Electronics
Top
Bronze Markjs
js's picture
Level: Moderator
Joined: Wed. Mar 28, 2001
Posts: 30518 View posts
Location: Sydney, Australia (Gum trees, Koalas and Kangaroos, No Edelweis, but plenty of Corona beer)
Posted by js: Fri. Jan 8, 2016 - 02:05 AM
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

And try and get 30c stamps to go with your stock of existing 70c stamps.

John Samperi

Ampertronics Pty. Ltd.

https://www.ampertronics.com.au

* Electronic Design * Custom Products * Contract Assembly

Top
valusoft
valusoft's picture
Level: Moderator
Joined: Sat. Jul 2, 2005
Posts: 15918 View posts
Location: Melbourne, Australia
Posted by valusoft: Fri. Jan 8, 2016 - 02:12 AM
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

I just tear a 70 in half... they can keep the extra 5cents.

Ross McKenzie ValuSoft Melbourne Australia

Top
jgmdesign
jgmdesign's picture
Level: Moderator
Joined: Mon. Mar 19, 2007
Posts: 18201 View posts
Location: Long Island New York
Posted by jgmdesign: Fri. Jan 8, 2016 - 02:13 AM
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

That is a great deal seeing as how the company listed on the back of the unit wants almost $3.00usd for one unit. Plus delivery

 

JIm

I would rather attempt something great and fail, than attempt nothing and succeed - Fortune Cookie

 

"The critical shortage here is not stuff, but time." - Johan Ekdahl

 

"Step N is required before you can do step N+1!" - ka7ehk

 

"If you want a career with a known path - become an undertaker. Dead people don't sue!" - Kartman

"Why is there a "Highway to Hell" and only a "Stairway to Heaven"? A prediction of the expected traffic load?"  - Lee "theusch"

 

Speak sweetly. It makes your words easier to digest when at a later date you have to eat them ;-)  - Source Unknown

Please Read: Code-of-Conduct

Atmel Studio6.2/AS7, DipTrace, Quartus, MPLAB, RSLogix user

Top
joeymorin
joeymorin's picture
Level: 10k+ Postman
Joined: Tue. Jul 17, 2012
Posts: 12051 View posts
Location: Location, Location
Posted by joeymorin: Fri. Jan 8, 2016 - 04:11 AM
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

Nice.  Too bad the enable pin isn't exposed.

"Experience is what enables you to recognise a mistake the second time you make it."

"Good judgement comes from experience.  Experience comes from bad judgement."

"Wisdom is always wont to arrive late, and to be a little approximate on first possession."

"When you hear hoofbeats, think horses, not unicorns."

"Fast.  Cheap.  Good.  Pick two."

"We see a lot of arses on handlebars around here." - [J Ekdahl]

 

Top
valusoft
valusoft's picture
Level: Moderator
Joined: Sat. Jul 2, 2005
Posts: 15918 View posts
Location: Melbourne, Australia
Posted by valusoft: Fri. Jan 8, 2016 - 04:16 AM
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

For US$0.49 I am willing to do some surgery on the enable pin myself.

Ross McKenzie ValuSoft Melbourne Australia

Top
jgmdesign
jgmdesign's picture
Level: Moderator
Joined: Mon. Mar 19, 2007
Posts: 18201 View posts
Location: Long Island New York
Posted by jgmdesign: Fri. Jan 8, 2016 - 04:30 AM
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

Wonder if you can run a 12v water pump on two AA cells with one of those units? wink

 

Jim

 

I would rather attempt something great and fail, than attempt nothing and succeed - Fortune Cookie

 

"The critical shortage here is not stuff, but time." - Johan Ekdahl

 

"Step N is required before you can do step N+1!" - ka7ehk

 

"If you want a career with a known path - become an undertaker. Dead people don't sue!" - Kartman

"Why is there a "Highway to Hell" and only a "Stairway to Heaven"? A prediction of the expected traffic load?"  - Lee "theusch"

 

Speak sweetly. It makes your words easier to digest when at a later date you have to eat them ;-)  - Source Unknown

Please Read: Code-of-Conduct

Atmel Studio6.2/AS7, DipTrace, Quartus, MPLAB, RSLogix user

Top
valusoft
valusoft's picture
Level: Moderator
Joined: Sat. Jul 2, 2005
Posts: 15918 View posts
Location: Melbourne, Australia
Posted by valusoft: Fri. Jan 8, 2016 - 04:32 AM
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

devil depends upon the water pump. The one I just rescued and tried in my water storage tank draws 5.4 amps at 12 volts.

 

Ross McKenzie ValuSoft Melbourne Australia

Top
Bronze MarkJohanEkdahl
JohanEkdahl's picture
Level: 10k+ Postman
Joined: Wed. Mar 27, 2002
Posts: 26945 View posts
Location: Lund, Sweden
Posted by JohanEkdahl: Fri. Jan 8, 2016 - 09:45 AM
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

Is this just me forming conspiracy theories, or is the trim pot saying "BONENS" in the same typeface thar "BOURNES" use?

As of January 15, 2018, Site fix-up work has begun! Now do your part and report any bugs or deficiencies here. 

No guarantees, but if we don't report problems they won't get much of  a chance to be fixed! Details/discussions at link given just above.

 

"Some questions have no answers."[C Baird] "There comes a point where the spoon-feeding has to stop and the independent thinking has to start." [C Lawson] "There are always ways to disagree, without being disagreeable."[E Weddington] "Words represent concepts. Use the wrong words, communicate the wrong concept." [J Morin] "Persistence only goes so far if you set yourself up for failure." [Kartman]

Top
sparrow2
sparrow2's picture
Level: Raving Lunatic
Joined: Mon. Oct 7, 2002
Posts: 7397 View posts
Location: Denmark
Posted by sparrow2: Fri. Jan 8, 2016 - 09:56 AM
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

Our normal letter just went up to 19 DKr =2.55 € 

 

  

Top
Kartman
Kartman's picture
Level: 10k+ Postman
Joined: Thu. Dec 30, 2004
Posts: 24951 View posts
Location: Melbourne,Australia
Posted by Kartman: Fri. Jan 8, 2016 - 12:11 PM
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

An all too common story unfortunately. There was a whole batch of solar inverters that were dropping like flies out here. It all came down to a 1A schottky diode failing that really shouldn't fail and it caused a cascade a destruction that rendered them uneconomic to repair. There was no happy ending - a few peole got caught with dud inverters.

Top
Torby
Torby's picture
Level: 10k+ Postman
Joined: Tue. Nov 11, 2003
Posts: 10388 View posts
Location: Bartlesville Oklahoma USA
Posted by Torby: Fri. Jan 8, 2016 - 02:03 PM
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

I don't see anywhere he specifies the input and output voltage ranges.

If you don't know my whole story, keep your mouth shut.

If you know my whole story, you're an accomplice. Keep your mouth shut. 

Top
Bronze MarkJohanEkdahl
JohanEkdahl's picture
Level: 10k+ Postman
Joined: Wed. Mar 27, 2002
Posts: 26945 View posts
Location: Lund, Sweden
Posted by JohanEkdahl: Fri. Jan 8, 2016 - 02:07 PM
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

Torby wrote:
I don't see anywhere he specifies the input and output voltage ranges.

From the actual home page of the product: 

1.Electrical characteristics
1). The maximum output current: 2A
2). The input voltage: 2V ~ 24V
3). The maximum output voltage: > 28V
4). Efficiency: > 93%

 

and...

 

3.How to use it?

[...]

  • Adjust the potentiometer to adjust the output voltage. Please be noted that the output voltage should be higher than the input voltage.

 

and...

 

4.Notes
1). The input voltage should not exceed the maximum input voltage
2). The peak current output current should not exceed maximum output current

 

Point 4.1 is kind of a "Duh!"..

As of January 15, 2018, Site fix-up work has begun! Now do your part and report any bugs or deficiencies here. 

No guarantees, but if we don't report problems they won't get much of  a chance to be fixed! Details/discussions at link given just above.

 

"Some questions have no answers."[C Baird] "There comes a point where the spoon-feeding has to stop and the independent thinking has to start." [C Lawson] "There are always ways to disagree, without being disagreeable."[E Weddington] "Words represent concepts. Use the wrong words, communicate the wrong concept." [J Morin] "Persistence only goes so far if you set yourself up for failure." [Kartman]

Last Edited: Fri. Jan 8, 2016 - 02:10 PM
Top
ki0bk
ki0bk's picture
Level: Raving Lunatic
Joined: Mon. Sep 8, 2014
Posts: 9329 View posts
Location: Over the rainbow
Posted by ki0bk: Fri. Jan 8, 2016 - 03:04 PM
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

Note Quantity available 999k+!!!  I wonder if that was a slight manufactures overrun on production, like someone missed the "." or "," depending on where your from, on the order form.

 

 

Jim

 

 

Keys to wealth:

Invest for cash flow, not capital gains!

Wealth is attracted, not chased! 

Income is proportional to how many you serve!

 

Top
Bronze Marktheusch
theusch's picture
Level: 10k+ Postman
Joined: Mon. Feb 19, 2001
Posts: 40216 View posts
Location: Wisconsin USA
Posted by theusch: Fri. Jan 8, 2016 - 03:19 PM
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

I was going to look up the part and make some post like "I can't even buy the  part for that". Google found the datasheet from Aerosemi.  But put mt3608 into Octopart or Findchips and they aren't available to mere mortals.

 

 

You can put lipstick on a pig, but it is still a pig.

I've never met a pig I didn't like, as long as you have some salt and pepper.

Top
valusoft
valusoft's picture
Level: Moderator
Joined: Sat. Jul 2, 2005
Posts: 15918 View posts
Location: Melbourne, Australia
Posted by valusoft: Fri. Jan 8, 2016 - 10:32 PM
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

My 10 units are on the way... will let you know how they perform when they get here... "couple of weeks"

 

Ross McKenzie ValuSoft Melbourne Australia

Top
Torby
Torby's picture
Level: 10k+ Postman
Joined: Tue. Nov 11, 2003
Posts: 10388 View posts
Location: Bartlesville Oklahoma USA
Posted by Torby: Fri. Jan 8, 2016 - 11:09 PM
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

Might go for that myself. But then, they'd probably ship it to an address I had years ago. (Been having trouble with that.)

If you don't know my whole story, keep your mouth shut.

If you know my whole story, you're an accomplice. Keep your mouth shut. 

Top
mnehpets
mnehpets's picture
Level: Resident
Joined: Wed. Nov 9, 2011
Posts: 963 View posts
Posted by mnehpets: Sun. Jan 10, 2016 - 12:48 AM
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

JohanEkdahl wrote:

Is this just me forming conspiracy theories, or is the trim pot saying "BONENS" in the same typeface thar "BOURNES" use?

Yeah, I too noticed the name on the trimpot. I don't think it's an attempt to deceive the end user - I would think that anyone who cares about the quality of their trimpots will know the difference between bournes and bonens. However, I do think that bonens are trying to evoke an image of bournes-like quality. It's similar to the way nearly every multimeter comes in a yellow holster in an attempt to associate with fluke (of course, that ended in a silly kerfuffle at sparkfun a few years back).

 

- S

 

Top