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  1. P

    How about hot steam for unsoldering (more effective than heat gun?)

    I kinda like the idea of superheated steam, but I wouldn't try it. Steam is too dangerous for casual handling.
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    pls help need to pass for my finals

    Switch debouncing probably counts as a project :)
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    I need a 350V, 1A PSU

    Thank you very much for this suggestion, although the power supply doesn't quite fit my needs. Things are supposed to get a bit industrial 'round here, and lotsa watts are going to happen :) (Exactly what I'm up to I'll keep mum about just yet ;) )
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    I need a 350V, 1A PSU

    Yes, that's about where I was at when I stalled because of the LM317. Now I've heard of the LR8N-3G, courtesy of Harald Kapp. I looked at the circuits he pointed me to, and I'm settled-at-the-moment on using a Variac into an isolation transformer and then straight into the diode bridge and...
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    I need a 350V, 1A PSU

    Thank you very much for your time on this. I've seen that there are kind professional people on this forum. :)
  6. P

    I need a 350V, 1A PSU

    As I am a qualified and registered technician with 6 years government/corporate experience and lots of little engineering projects under my belt. I do know what I'm about - just looking for ideas is all :)
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    I need a 350V, 1A PSU

    For clarification ~ I'd like my supply to be better than just a Variac-fed diode bridge and capacitors - I want proper regulation. At this stage, because I can't afford the cost of the manufactured supplies, I am thinking of an unregulated supply followed by an adjustable regulator based on a...
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    I need a 350V, 1A PSU

    800? No, I meant 8000.800 I would pay but wish I didn't have to, but $8000 is not available. :)
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    Connecting copper and iron wires

    Hi :) It's nearly always true that dissimilar metals make poor electrical companions. I can think of 2 solutions 1) use a good, hot soldering iron to solder a long contact between the wires, and 2) coat whatever kind of connection you decide on with a little skin of petroleum jelly. By the way...
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    Frankenstein's Components.

    At 12.57
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    I need a 350V, 1A PSU

    Hi people I want to play with high voltage piezoelectric transducers. To drive these highly capacitive devices I need a low impedance, stable 350V d.c. supply. I'd like to have 1A of smooth 350V current available. Naturally I remembered *steve* who often said that Google is your friend (but...
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    Not sure what sensor to use

    Hmmmm and :) :) Actually only 2 angles need be measured, in order to completely determine a direction in 3-space, as any astronomer knows. However I can't see how to translate that into simpler engineering just yet...
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    Is it necessary to power on in order to diagnose failure IC of CRT TV?

    And if you succeed in this venture I fear you'll think you're now ready to tackle a microwave - thinking that's only 5kV so you must now be ok with that, after your 10kV experience. It's not just novices who are at risk :)
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    Is it necessary to power on in order to diagnose failure IC of CRT TV?

    I like others here especially the moderators, have undergone extensive professional training in electronics repairs If my first day apprentice were to go near the circuit you're trying to fix I would think him very likely to die. I would absolutely stop him from doing any such thing and I now...
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    Magnetostriction.

    Wow, yeah. Y'know, it all makes my mind just boggle, baby.
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    Magnetostriction.

    Hi all! Double happiness with hot sauce ~ I found a link :) :https://www.mdpi.com/2076-0825/10/10/266 TV I'm sure I'm on the Yellow Brick Road by now - although confusingly I'm already in Oz... just catching up on a bit of wizard training (¿) Thanks for letting me go a bit off-topic. It's...
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    Magnetostriction.

    Thank you, Mr Kapp. I haven't seen anything like that either, but I noticed that the magnetostrictive effect allows very tiny motions to be repeatable. Then, I thought about geometries that might employ a ferrite rod to achieve stepwise motion... I think someone must have tried it. The piezo...
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    Magnetostriction.

    Thank you very much for that one, danadak. I now have a few things to consider - the magnetostrictive method, a "ball screw" (as used in CNC mills), and this linear actuator.
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    Magnetostriction.

    :) I want to move things several millimeters long by about a micrometer at a time, in 2D. There might be a kg of mass involved. Other ideas of how to move my load might be useful too.
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    Magnetostriction.

    Hi peeps :) I'd like to try using the magnetostrictive properties of ferrite to move a tiny table - perhaps 50mm^2. I've seen no practical designs. I'd especially like to hear from anyone with experience in anything similar.
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