![]() ![]() It doesn't really matter differences in the winding pattern are in the area of audiophile cork sniffing, with regard to inductors that carry audio. A bobbin that takes many turns of wire can be wound very neatly and systematically, or randomly, in terms of the pattern of the distribution of windings. The "back and forth" refers to the distribution of the windings along the length of the bobbin. Of course all of the turns on the bobbin of an electromagnet are in the same direction. I have no idea how the guy made that electromagnet pull down the clapper?! Removed 2 capacitors and used the pushing end of the solenoid to kick the clapper out. I used 3.5metres and wound it much much neater than his. He reckons he used 2m of cable to wind the coil. The gap there has to be about 1.5~2cm so the clapper can smack the bell. He uses a darlington transistor? Does that influence the coil somehow? I only have a normal transistor. This is a project that somebody got working using USB power and winding his own coil. Simulate this circuit – Schematic created using CircuitLab I will be using aTiny that triggers the transistor maybe 0.2seconds and I need a jolt of magnetic power to pull the clapper down and release instantly. Also is there any difference which way the ends are pointing or do both sides emit the same field?Īt the moment I have PCB with 3 1000uf caps in parallel to the coil that is triggered by a transistor. ![]() I found an article where somebody says that the windings should be wound in the same direction (clockwise layer, clockwise layer.etc) to create a truly stronger solenoid but all articles say just wind them back and forth (magnet?)Ĭan somebody in general suggest what kind of core material and diameter would be the best and if winding the coils in the same direction will actually help. In general the more windings the stronger the field which is common across all articles I read. ![]() I can't really find a laymans explanation on what diameter core cable to use and how many windings. And now I have noticed a problem with precision :) I can wind a massive coil and it will work but how do I wind a small yet powerful coil? So I am attempting to make my own magnet and I have wound several different types of screws, nails and bolts with different types of wire. I have found ready made solenoids that push out but not pull. This magnet will be put into a desk bell so it pulls the clapper down and rings the bell. About 3cm high and 2~5cm wide running at 5V/0.5A. I need to wind a small electromagnet "solenoid?". ![]()
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