Removing solder

Started by AK in sci.electronics.basics1 year ago 10 replies

I use my desolder gun to remove solder from circuit boards but I can't always remove enough especially when the solder is in stranded wire. Is...

I use my desolder gun to remove solder from circuit boards but I can't always remove enough especially when the solder is in stranded wire. Is there some other technique? Andy


Solder paste

Started by Andy K in sci.electronics.basics2 years ago 18 replies

I having been using Oatey solder paste when soldering large diameter wires. I know it's designed for copper pipes. Is there something...

I having been using Oatey solder paste when soldering large diameter wires. I know it's designed for copper pipes. Is there something better? Thanks, Andy


Solder flux and resistance

Started by George Herold in sci.electronics.basics10 years ago 6 replies

When testing a high impedance board (up to 1 G ohm) I found that the SMD 0805 10 Meg ohm resistors measured only 6 meg ohm. The problem was...

When testing a high impedance board (up to 1 G ohm) I found that the SMD 0805 10 Meg ohm resistors measured only 6 meg ohm. The problem was traced back to the liquid flux used with Rohs solder. (100 Meg and 1 G resistors are through hole and measured correctly.) I then wanted to measure the resistance of different =91flux blobs=92. I made big solder blobs on 0805 SMD pads (spacing bet...


Soldering paste

Started by AK in sci.electronics.basics11 months ago 10 replies

I recently received this and am learning about what applications it is good for. https://imgur.com/3pGTm0a I put a small amount on a project...

I recently received this and am learning about what applications it is good for. https://imgur.com/3pGTm0a I put a small amount on a project board and the solder seemed to adhere better. I am using up some old RS solder that has the paste already in it, though it may have dried out quite a bit. What situations would be good to use the paste in? Thanks, Andy


Dark silver wire

Started by Andy in sci.electronics.basics1 year ago 8 replies

Some of the wire i strip and solder is a dark silver color. Its a pain to solder to copper.. Is it aluminum? I read that a Al forms a non...

Some of the wire i strip and solder is a dark silver color. Its a pain to solder to copper.. Is it aluminum? I read that a Al forms a non conductive oxide on exposure to air.


How do you solder this?

Started by David Eather in sci.electronics.basics6 years ago 15 replies

I found this chip: http://www.ti.com/product/TPS60212 that will do all I need - step up 2v to 3.3v, very low quiescent current and a...

I found this chip: http://www.ti.com/product/TPS60212 that will do all I need - step up 2v to 3.3v, very low quiescent current and a small package. Unfortunately it is far too small a package - a VSSOP with a pin spacing of 0.5mm. Does anyone have some tips on how to hand solder this flyspec of an IC? I do SOIC, SOT23 and 0805 easily but this thing beats me. I did find a sim...


Cannot remove caps from motherboard

Started by Anonymous in sci.electronics.basics8 years ago 20 replies

I'm trying to repair my MSI motherboard by replacing the caps near the regulators since they are bulging and are most likely defective....

I'm trying to repair my MSI motherboard by replacing the caps near the regulators since they are bulging and are most likely defective. However, even at the highest setting of my soldering iron (480 degrees Celcius) I'm unable to liquify the solder. I don't know what kind of solder they're using for motherboards but it's obviously not the kind you can easily manipulate with common DIY to...


Unsolderable wire?

Started by Bob E. in sci.electronics.basics4 years ago 67 replies

I am trying to solder some RG-6 shield to a pcb. The braid won't tin. It's almost like it's dissipating the heat faster than I can apply it....

I am trying to solder some RG-6 shield to a pcb. The braid won't tin. It's almost like it's dissipating the heat faster than I can apply it. With both a temp-controlled iron (set as high as 700F) and a mondo 100W stick I finally tried. The solder will barely melt when touched to the braid opposite the iron. I've applied some Kester rosin paste flux as well using my trusty Kester 60/4...


Soldering 550m of copper wire

Started by Goran in sci.electronics.basics7 years ago 46 replies

I have to solder 550 - 600m of 1mm copper wire. Wire must be completely covered with solder. It will take some time to do this on regular...

I have to solder 550 - 600m of 1mm copper wire. Wire must be completely covered with solder. It will take some time to do this on regular basis ( with soldering iron ) so i was thinking to make some kind of slot in some aluminium housing and melt the lead alloy in it. Then i can put the wire in it and draw it slowly throe this slot. Additionally i can set some stepper motor on the othe...


Splattering solder into eye?

Started by Peter Hucker in sci.electronics.basics3 weeks ago 48 replies

Has anyone ever actually been unlucky enough to get solder splattering into their eye? I've had it hit my leg, hand, and face, but never in my...

Has anyone ever actually been unlucky enough to get solder splattering into their eye? I've had it hit my leg, hand, and face, but never in my eye. How bad is it? -- http://www.petersparrots.com http://www.insanevideoclips.com http://www.petersphotos.com Confuscious say: "War doesn't determine who's right. War determines who's left."


From breadboard to soldering

Started by AK in sci.electronics.basics1 year ago 45 replies

I am ready to transfer my circuit from breadboard to PCB Prototype Circuit Solder BREADBOARD. Any advice appreciated. Is 22 gauge hookup...

I am ready to transfer my circuit from breadboard to PCB Prototype Circuit Solder BREADBOARD. Any advice appreciated. Is 22 gauge hookup wire what I need? I was going to order these. https://www.ebay.com/itm/2x-5-x-10-cm-DIY-PCB-Prototype-Circuit-Solder-BREADBOARD-Discrete-and-D IP/141677397222?hash=item20fca184e6:g:lUAAAOSwPcVVvnaf SPDT switches 4 conductor wire to run my photoce


Solder these 2 wires while being able to slip the shrink tubing over the soldered connection

Started by AK in sci.electronics.basics5 days ago 6 replies

I would like to learn how to solder these 2 wires while being able to slip the shrink tubing over the soldered...

I would like to learn how to solder these 2 wires while being able to slip the shrink tubing over the soldered connection. Thanks. https://imgur.com/a/9z3z294


How to solder very thin stranded wire?

Started by DaveC in sci.electronics.basics7 years ago 33 replies

This is one conductor in a cable from some iPod earphones: http://www.tinyuploads.com/images/mizPu4.jpg What is the best way to deal with...

This is one conductor in a cable from some iPod earphones: http://www.tinyuploads.com/images/mizPu4.jpg What is the best way to deal with the fibre strands and to tin the wire? Thanks, Dave


Better electrical connectors

Started by AK in sci.electronics.basics1 year ago

I have been using the blade type male/female electrical connectors, but there are a little klunky in connecting up. Is there something better,...

I have been using the blade type male/female electrical connectors, but there are a little klunky in connecting up. Is there something better, preferably that I can solder? I mainly use around 10 - 22 gauge wire. Thanks.


Socket or solder?

Started by Frederick Williams in sci.electronics.basics7 years ago 18 replies

How would one make electrical connections to this: http://www.tube-amps.net/images/Hashimoto_Prods/H-30-5S_800.jpg? Is there a socket, or would...

How would one make electrical connections to this: http://www.tube-amps.net/images/Hashimoto_Prods/H-30-5S_800.jpg? Is there a socket, or would wires be soldered directly to the pins? -- When a true genius appears in the world, you may know him by this sign, that the dunces are all in confederacy against him. Jonathan Swift: Thoughts on Various Subjects, Moral and Diverting


Seating Header Strips

Started by Searcher7 in sci.electronics.basics8 years ago 3 replies

I am working on a project involving some 40 Pin 2.54mm Male Double Row Header Strips. I need to securely position two of them in parallel with...

I am working on a project involving some 40 Pin 2.54mm Male Double Row Header Strips. I need to securely position two of them in parallel with about an inch between them. The first thought was to get some PC board and drill holes for the pins and solder the strips in, but since I don't have the precision equipment needed to do this quickly I was wondering if there was another relatively...


DAB radio kits?

Started by Peter Percival in sci.electronics.basics2 years ago 2 replies

There are plenty of AM and FM radio kits (= bag of parts and solder it yourself), but are there any DAB radio kits? -- "He who will not...

There are plenty of AM and FM radio kits (= bag of parts and solder it yourself), but are there any DAB radio kits? -- "He who will not reason is a bigot; he who cannot is a fool; he who dares not is a slave." - Sir William Drummond


Soldering kit

Started by Andy in sci.electronics.basics2 years ago 18 replies

I have been soldering for a lot of years, but all I had was a single 30W temp iron and no desolder gun. My new kit will have adjustable heat...

I have been soldering for a lot of years, but all I had was a single 30W temp iron and no desolder gun. My new kit will have adjustable heat and a desoldering gun. That will be nice as it's been a bear trying to wick up solder and sling it away. I have been using my bench grinder brush to clean my tips. My current tip is at least a year old, but still heats great. What do you use ? ...


Soldering a LED Display Matrix

Started by Daniel Pitts in sci.electronics.basics8 years ago 8 replies

So, I've learned the hard way that it isn't trivial to solder a LED matrix. I've actually extended that lesson to realize any non-planar...

So, I've learned the hard way that it isn't trivial to solder a LED matrix. I've actually extended that lesson to realize any non-planar graph adds difficulty to soldering. Anyway. I was trying to build a 5x5 LED matrix (because I only have 25 LEDs right now, and it seemed like a good start). I got two rows in, before I realized I wasn't going to be able to finish it the way I was t...


non-destructively finding a break in an insulated DC wire

Started by Adam Funk in sci.electronics.basics6 years ago 15 replies

I have a wall-wart charger that put out 4.2 V DC on a figure-8 cable just over 1 metre long. There seems to be a weak spot or...

I have a wall-wart charger that put out 4.2 V DC on a figure-8 cable just over 1 metre long. There seems to be a weak spot or intermittent break in one of the wires --- sometimes it doesn't work but jiggling the cable makes it work. Is there any non-destructive way to find the position of the break? (I know I could cut it in half, test both halves, repeat as necessary, ... solder all the...