Desoldering a Tuning Fork Can
in [Repair]
|
Prev: Sony TV
Next: Ronald Federici: Global Expert
From: Chris on 4 Feb 2010 13:15 On Feb 3, 2:42 pm, "Wild_Bill" <wb_wildb...(a)XSPAMyahoo.com> wrote: > Some difficult-to-solder parts are soldered quickly with resistance > soldering equipment. American Beauty and Pace are 2 that I'm familiar with. > > The soldering tips are wired to a fairly high current, very low voltage (not > many turns for the secondary winding) transformer, and the duty cycle of the > xfmr primary winding is regulated by a simple triac/diac circuit. > > The tips are put in contact with the workpiece, and current is passed thru > the workpiece, creating a short circuit in the xfmr secondary circuit, > quickly generating heat in the workpiece. > > The tip placement for most items is at opposite sides of the workpiece, > heating the entire part located between the tips. > The tips don't need to be tinned, they only need to make good electrical > contact with the workpiece. > > The end cover for a cannister type object would be a fairly simple and quick > task with a resistance soldering unit. > > -- > Cheers, > WB > ............. > > "Chris" <christopher.man...(a)gmail.com> wrote in message > > news:f6fff602-fa46-40e5-ad75-a087cc6fb616(a)g28g2000prb.googlegroups.com... > > >I have a tuning fork can sealed with solder. Similar to a sealed > > crystal can. My 200W soldering gun doesn't even seem to have enough > > BTU's to melt very much of the solder on the can. Any suggestions? > > It is a rather large heat sink capacity. > > > Regards, > > Chris Maness I have decided to build a crystal controlled multivibrator circuit to replace it. I started a thread about it on sci.electronics.design. The guy that I had ordered the crystal from told me that it would be a bad idea to open the can due to contamination. However, I might be still interested in opening the can once I get the thing working with the crystal vibe with a divide by 2^14. Regards, Chris Maness KQ6UP |