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  1. ante1

    Bigginers Handbook

    Hi sawwa, Yevgeni kindly uploaded it to our site. It can be downloaded from here: http://www.electronics-lab.com/forum/index.php?topic=3449.0 since june 4. ;D
  2. ante1

    19v 5A PSu

    Hi Dude  ;D First from this site: http://www.electronics-lab.com/projects/motor_light/003/ with a bigger MOSFET and a good heatsink this one will work fine. And here is another one which is made for 12V but could easily be modified: http://www3.telus.net/chemelec/Projects/PWM/PWM.htm And one...
  3. ante1

    0-24volt power supply

    This one works very nice!
  4. ante1

    more help on h-bridge

    I found another simple H-bridge at : It’s looking good, doesn’t it?
  5. ante1

    lead acid batery charger

    Hi Jose, OK, I have got an example for you here: http://www3.telus.net/chemelec/Projects/Charger/110-chg.htm This is for 12 Volts but can be changed to work for a 6V battery. Be careful and please read the warnings! (Very nice site BTW)!
  6. ante1

    My solderstation failed

    Hi Staigen, I have very little to non experience with this type of station but my guess is the heat element has an open circuit once it gets a little hot! Try to measure the resistance in the element when it is hot (as hot as it gets) and then let it cool of while the meter is still attached...
  7. ante1

    more help on h-bridge

    That would be much safer and I recommend a pull down resistor for each base too (Q1 & Q2) when not connected to the pulse (555). ;D
  8. ante1

    more help on h-bridge

    Hi shri sam, It’s a bit dangerous to use the 555s as drawn in the schematics, try to use only one. If they switch on at the same time you will destroy parts of the circuit! :o
  9. ante1

    19v 5A PSu

    A simple 555 PWM circuit with couple of MOSfets will do the job.
  10. ante1

    LED nite light schematic

    It’s a challenge, try to make them better! ;D
  11. ante1

    HELP! project abt DC power supply.

    Hi again, Sorry but it don’t get much simpler than this, how can I help?
  12. ante1

    My solderstation failed

    Hi Staigen, I case Bjorn don't have any, I have two Weller schematics. I don’t know if there are any similarities what so ever but I hope they will give you some guidance. ;D ;D Swedish teamwork! 8) Weller_EC-2002.pdf Weller_S80.pdf
  13. ante1

    high voltage photo flash capacitor charger

    Ok Steven, I got the picture. And you remember to present your results as they emerge! ;D Good Luck and be careful!
  14. ante1

    LED nite light schematic

    Hi Ed, What’s wrong with these gizmos, they can’t be very complicated can they? Maybe you can post a close up picture and someone might have an idea for you.
  15. ante1

    peavey pv-8.5c

    OK, I see.  There is perhaps a continuous overload on the grid in this area at prime rehearsal time! ;D
  16. ante1

    Antenna Theory: Analysis and Design, 2nd Edition

    Hi asahin, It’s from 1985 and it’s 50Mb+, still interested? It is the only e-book I have got on antennas.
  17. ante1

    high voltage photo flash capacitor charger

    Hi Steven, I don’t think you could zap the capacitors back to life; you have to charge them slowly through a resistor up to the work voltage. BTW, what can you tell us about the “I work on other ideas” thing? ;D
  18. ante1

    WIND MILL HOME MADE

    Hi Bob, Welcome to our forum. If you got DC output you need a switched DC/DC converter or you will get heat losses. Try to find one ready built, they are not easy to construct from scratch when 40 A is involved. You might find one that they use for electric forklifts they sometimes have an...
  19. ante1

    HELP! project abt DC power supply.

    Hi infinity, Welcome to our forum, Here are two circuits, one with fixed voltage and on with variable. To any of these you can add an LM 7905 on the negative side to get the -5V you require.
  20. ante1

    lead acid batery charger

    Hi jmmendicoa, When you state that”it will be charging all the time” I suspect there are things running off this battery. If so, it must be completely insulated and touch protected! If you are not sure about this DO NOT use a transformerless supply!
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