Showing posts with label Tools. Show all posts
Showing posts with label Tools. Show all posts

Thursday, 8 January 2015

Soldering Station Conversion

Sentimental Issues

Back in my Uni days, I bought what I thought was a pretty sweet soldering station - the Micron W/2172.   If I remember right it cost about 4 weeks worth of part time wages, and I think it was worth it - it's lasted about 20 years so far.

But, there are issues.  I can't find a supply of new tips for it, and the last good tip is a conical one.  So it was put away in the cupboard and I upgraded to a Hakko 396 station.

Then I got to thinking... both stations used a 24V supply to heat their irons, so how hard would it be to graft a 907 handle into the Micron station?  It would also be handy - I could load the Micron station with a big chisel tip for when you need a lot of thermal mass, standardise on one set of spares for both stations, and avoid having to swap tips on my Hakko all the time. WIN!

Will It Work?

There is a lot of information out there about the Hakko 907 handle, and this topic on the EEVBlog forum  was exceptionally helpful.  The important point to take away is that the 907 handle uses a thermistor to measure it's temperature.

If the Micron does the same, it should be a simple mod.

Take it Apart!

So, I whipped to cover off and started to take a look.


  

Friday, 5 December 2014

Improved Current Load

Some Free Advice!

(Update - July 2019 - see the end of this post regards how not to blow this up!).

Back when I wrote about my failure to build a current limiting circuit for my Alarm Panel Interface, Zega was kind enough to offer me some advice.

Long story short, half the oscillations I was chasing in my limiting circuit were due to my quick and dirty Constant Current Load.  


Here's the Problem...