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  1. chopnhack

    Designing a Time Delayed Relay

    Thanks guys! Another interesting appearance of reactance. :) No fuse it is. If the transformer needs to be replaced in the future, I can pig tail one in. Shame I spent 30 minutes modeling the fuse in Eagle :eek: - getting easier though!
  2. chopnhack

    Loctite on electrical connections

    Good planning! Got lucky :-)
  3. chopnhack

    Loctite on electrical connections

    Are they available? The bottom of that website you posted says he is out of stock since July!
  4. chopnhack

    Designing a Time Delayed Relay

    Thanks mate!
  5. chopnhack

    Designing a Time Delayed Relay

    Kris, I was reading the spec sheet for the transformer and it claims: 8. Inherently Limited. No fusing required. Does that mean the transformer itself blows open when shorted? I am guessing because of the low amperage through it, the small wires act as fuses. Does this mean that the fuse is a...
  6. chopnhack

    need help custom high voltage alternating pulse circuit

    Ah, I didn't know they had to be synchronized. I am sure someone will be along to help you shortly, best of luck :-)
  7. chopnhack

    need help custom high voltage alternating pulse circuit

    Fair enough, then I would suggest taking a circuit like the one shown in the pic and substituting trim pots for the fixed resistors. From my experience doing the same you can get a fairly fast swapping between transistors >20hz IIRC I am sure there are more elegant ways to do this, but I am a...
  8. chopnhack

    Loctite on electrical connections

    Spot on, they make one just for that purpose - the liquid is green in color - 200 series - 290 or 220 from Loctite. Another thing you could try is copper based pipe thread sealant - plumbing section.
  9. chopnhack

    need help custom high voltage alternating pulse circuit

    Welcome to the forum Shanan! To be honest I will be of little value to you in this respect, however, I can save some of the more experienced members from having to ask you and wait for the following data: 1. Can you specify "high voltage"? Are we talking about anything above 40V or over 1kV...
  10. chopnhack

    Alarm when handbag opens accidentally

    Good point, one must consider all solutions, but don't over look the fact that the OP also has other reasons for wanting to approach this: (college)
  11. chopnhack

    Hello Everyone!

    Welcome aboard Frenoy glad to have you with us and contributing :) - EP is a very nice place to learn and share so please post what you are working on and include everyone's favorite: Pictures ;)
  12. chopnhack

    Alarm when handbag opens accidentally

    Perhaps a photosensor/transistor could be used as the switch between night/day mode to reduce complexity and eliminate the need for a μcu. It would not be as sensitive of course. I would suggest placing/stiching the vibrating device high up in the bag and perhaps include some loose metallic...
  13. chopnhack

    Dryer not spinning

    :eek: After contorting and installing the belt, reassembling everything - I said to myself let me plug this in before I completely button it up to make sure the drum spins and tracks true - I was rewarded with a small shower of sparks :mad: Turns out a wire had pulled free of its tab and...
  14. chopnhack

    Designing a Time Delayed Relay

    Thanks Kris! I will start to work on this later in the week. No 20v caps, 16v and 25v seem to be pretty common. I will see what room we have on the board before worrying about this. As for the slow blow fuse, 160mA are available - that should exceed the max needed by the circuit. Thanks again :-)
  15. chopnhack

    Designing a Time Delayed Relay

    LOL, no worries - that is part of the design process. I had a look at various transformers, are there any you could recommend that would be of the smallest form factor? I wanted to build a bom and see what I was looking at. With regards to the smoothing cap, from my previous experience seeing...
  16. chopnhack

    Capacitive Reactance Circuit

    5 days! Wow, I will have to look for that service next time I need something, thanks for the info and the offer! I will give them a few days as this has happened to me in the past and the item literally shows up within a day or two.
  17. chopnhack

    Getting Started with FPGAs.....

    Good for you Fish, I would love to see more of what you come up with! Admittedly, I barely understood what you were talking about :p:D
  18. chopnhack

    Capacitive Reactance Circuit

    I received correspondence from them on 11/13 asking if I had received it. I told them I had not and am still waiting on its delivery. They are asking me to wait 5 more days and then they would issue a credit for it. As a friend told me, these are typically shipped via the least expensive...
  19. chopnhack

    Designing a Time Delayed Relay

    No worries, we keep you busy enough on the site! - Many thanks :-) LOL :oops: I recently posted about smps and talked about upper/lower gates and I didn't even realize that this chip has it onboard.... oops! :D Out of curiosity, would it have been safer to isolate the bridge rectifier output...
  20. chopnhack

    Homemade 10 ohm resistor

    Well, you could put ten 100Ω resistors in parallel - what watt ratings are the resistors you have?
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