Search results

  1. Hero999

    DATASHEET OF SE336 (SMD IC)

    What package is it? How many pins does it have? It might be the same as the LM336. Reverse engineering part of the schematic may confirm this. http://www.national.com/ds/LM/LM136-2.5.pdf
  2. Hero999

    Noisy relay now dead - help ~!

    You could replace the relay of course but I don't think that would solve the problem. Do you have a schematic? If not you could reverse engineer the part of the schematic around the relay. My guess is the relay limits the inrush current to avoid tripping the breaker. There will be a high...
  3. Hero999

    Why My Bug Zapper Suddently Stopped Working?

    Silly question but have you tried replacing the batteries? Even though they might measure 1.5V each on the multimeter, they could've gone high impedance and not be able to provide the current when the bug zapper is connected.
  4. Hero999

    Is there a "new posts" button

    Click the Show unread posts since last visit on the main forum page.
  5. Hero999

    How do I create an inductive switch?

    It's basically a metal detector for which there are plenty of schematics on the Internet.
  6. Hero999

    LM358 - Dual Low Power Operational Amplifier

    It's not necessarily a problem. The LM358 has many applications where its low speed is not an issue.
  7. Hero999

    Need help with inverter circuit

    Wow, I've just looked at the datasheets for the transistors used and they're horrible! Their HFEs are low and saturation voltages high. I'd recommend using the circuit attached instead. The MOSFETs can be the IRF540N. Sorry the schematic is a little fuzzy, I can re-draw it more neatly, if you...
  8. Hero999

    Need help with inverter circuit

    Using a Darlington triple is a poor way to increase the current gain because it has a voltage loss of 3V or more at high currents. I'll post a correction tomorrow.
  9. Hero999

    Need help with inverter circuit

    There are plenty of things wrong with that circuit. Your best bet is to buy an off the shelf inverter. Send to that, you should remove the LM324 and replace the old BJTs with MOSFETs such as the IRL540.
  10. Hero999

    Need help with inverter circuit

    Please post a decent sized schematic. What do you mean by bypassed? If you remove one of the driver transistors the meter will only show half the voltage because the transformer is only being driven from half the voltage.
  11. Hero999

    Modify existing project

    Why not use a CD4011 configured as an astable, rather than the old 555 timer? It uses much less power than the 555 timer and costs the same price.
  12. Hero999

    Pirated content

    Thanks for clarifying that. No hard feelings intended. I just disagree with you. You're the one who's being nasty. And  for the record, you're mistaken, I don't think  piracy is fine. I just think you're wasting your time.
  13. Hero999

    Need a Simple Flame Detector with Relay

    Why not just use a thermocouple specifically designed for the purpose?
  14. Hero999

    VHF-UHF indoor antenna project help!

    Let me Google that for you.
  15. Hero999

    Pirated content

    I read that post. What I don't understand is, how you expect us to help you when you don't say what your site is and that's before we discuss copyright or the technicalities of the circuit.
  16. Hero999

    Pirated content

    What does that mean? Speak English. You're just trolling now. I'm tempted to delete this thread or at least lock it but I'll leave it up to mixos (the administrator) to make that decision.
  17. Hero999

    Pirated content

    What does konfuciused mean? I've re-read the whole thread and have no where have you made it clear what your site is. All you've done is posted links allegedly containing illegal copies of your content. Please either post a link to your site and some evidence that it is your work which has been...
  18. Hero999

    Pirated content

    Eventually, he makes it clear that his site is electronics-diy.com. Before that post we didn't even know which site is supposed to be the original. Don't worry, ignore him until he he can prove he's the original creator, otherwise he doesn't have a leg to stand on. Either way, I think the...
  19. Hero999

    Pirated content

    And how much money do you think you've really lost? 1$, 5$? The only way to tell is look at your advertising revenue, which may have even gone up. Well, part of that statement doesn't apply to me as I don't live in the US. Whilst I agree with copyright to some degree, I think things have got...
  20. Hero999

    555 timer designs using relay as output switch

    1) No. 2) Read the 555 datasheet and look for 555 timer tutorial on Google. 3) This is no a free design service. We won't simply design a circuit for you. The purpose of this forum is help people learn how to design circuits for themselves. If you don't want to learn then why not just buy an off...
Top