How to solder...i mean whenever i try to solder something, the circuit seems never to work.

Whenever I have tried to solder a circuit, on a perf board, it has not worked. Someone told me that I am dry soldering. Also some said I heat it too much and this leads to 'frying the electronics' I am confused. Please help.

gmoon8 years ago
I can see why you're confused--those two scenarios are opposite extremes. One results from too much heat, the other from not enough. But both are legitimate causes of failure. Still, it's difficult for us to judge without photos. Some simple tips: -- Keep the leads clean. That means not touching them with your fingers, or sometimes using emory paper to manually clean them up. -- Protect sensitive devices (transistors, ICs, diodes, film caps, etc.) from heat damage with a clip-on heat sink. These are small aluminum clips. In fact, you can also use standard alligator clips in a pinch. Attach the clip between the joint-to-be-soldered and the device you want to protect. Obviously, remove the clip when the soldering is finished. -- Use enough heat to get the solder to flow, then withdraw. If the solder isn't flowing well over the joint, it won't work. Unless I'm working with lots of small semiconductors, I prefer a 20W iron over the smaller 10W irons. -- DON'T wiggle or move the parts while the solder is hardening. One of those "third hand" devices is helpful. -- Keep the soldering iron tip clean. You can buy a small can of tip cleaner. At some point, the tip will need replacing. -- If at first you don't succeed, try using flux paste.
Schmidtn8 years ago
Try applying a small amount of rosin core solder to your soldering iron's tip. Low wattage/low heat works the best (if your soldering iron has an adjustable setting). Apply heat to the board where your joint is going to be and the pin of the piece you're soldering. Apply solder to the joint and remove the solder wire (not what you just applied to your joint) and soldering iron's tip. Allow to cool and you've soldered! Also try simple circuits first, maybe just a power source, resistor and LED brought back to ground. The more complex your circuit is, the more places it might have failed (bad solder joint/bad component, etc) making it harder to isolate what went wrong. A continuity tester might be a good investment in that case. And if a circuit doesn't work in your breadboard it wont work on your experimenter's board.
lemonie8 years ago
Are you using solder? The phrase "Someone told me that I am dry soldering" worries me a bit. If you are is it resin-core or otherwise with flux solder? L
Kiteman8 years ago