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  1. Martaine2005

    Power Supply...

    Well, math and formulae are like good jokes with me. The go in one ear and out the other!! But as I understand it, Q = I * t. But lets not talk Coulombs.... C = xT. Where C is amp hours, x is current draw and T is time. Just got beaten to it!!!! But I'll finish any way, 4 amps * 50 hours = 200...
  2. Martaine2005

    Switch replacement for lamp

    The dimensions needed are like this picture. The panel hole size and the depth inside the lamp where the switch goes.
  3. Martaine2005

    Switch replacement for lamp

    Yes, that is one of many suppliers of switches. And most rocker switches come with connectors not screw terminals. Martin
  4. Martaine2005

    Transforming hammer help

    Check out 'colinfurze' youtube channel. He makes lots of working weapons from cartoons. You may be able to get ideas for the slider from his Wolverine claw video. Martin
  5. Martaine2005

    Rolling your own capacitors?

    Give @Lavaguava a call....Done... If I recall correctly, he was doing a project on making his own large capacitor. I can't remember the out come though. Martin
  6. Martaine2005

    Power Supply...

    Oops, did I say 200 V? I meant 200 Watts. If it is only 15 W, it is 3 A. P = V * I, so 5v * 3A = 15 Watts. Or 5v * 40A = 200 Watts.. It's probably rated at 4A. Martin
  7. Martaine2005

    Power Supply...

    That equates to 200 volts. Are you sure it's 40 Amps? Martin
  8. Martaine2005

    Switch replacement for lamp

    That is just a 'Rocker Switch'. If you measure it and the hole, you wont have a problem with finding a replacement. You may have a problem finding an exact match with screw terminals. Most have crimp connectors. Martin
  9. Martaine2005

    20kv Cockroft walton generator

    John, Nobody can help you! If you don't know what input voltage you will be using, how can somebody answer your questions. Did you read the link Steve provided? It has all the information you need. The calculations have already been done for you above!! In fact, this has already been explained...
  10. Martaine2005

    Switch replacement for lamp

    That would be the simplest solution.. Martin
  11. Martaine2005

    Switch replacement for lamp

    Hi metaduck, That's a very big wide open question! But can I assume you mean one of theses? Martin
  12. Martaine2005

    latching pushbutton help

    Hey John, I am NOT really that silly!!! I have played "Noughts and Crosses" before!!:eek:
  13. Martaine2005

    latching pushbutton help

    Lol John, 8:10 pm here. I dropped out when the OP mentioned the engine starting!!!.. Martin
  14. Martaine2005

    latching pushbutton help

    I like it.. Is it a quiz? Martin
  15. Martaine2005

    Transforming hammer help

    Are you being serious? You want to make a complex item but don't know what anything is called? May be you should lay off the cartoons!! And, you believe it's triggered by a red lever under the hammer head? Sorry for being rude.....It just made me spit my tea on the keyboard!!! (coffee for...
  16. Martaine2005

    latching pushbutton help

    Yes it could Minder, just having a little joke with John.. Martin
  17. Martaine2005

    latching pushbutton help

    Oh Dear John, Do I really have to "unlike" your hand drawn schematic? Of course not! 10 out of 10 for participating!:) Just get it right next time!:D EDIT: What time is it on the other side of the world? Martin
  18. Martaine2005

    latching pushbutton help

    235 RPM to your original 50 RPM is very REVELANT. Nearly 5 times as fast!! Martin
  19. Martaine2005

    How to Charge an 8 AA NiMH Battery Holder?

    Hi Jake, These connectors are called DC connectors. The pic I linked have screw terminals for easy termination. I prefer soldered joints. But if you don't have a soldering iron, these are ideal. You must pay attention to polarity!!! Red to red and Black to black etc... The charger I also linked...
  20. Martaine2005

    How to Charge an 8 AA NiMH Battery Holder?

    Hi Jake, That pic is just a coupler connection because both the charger and battery already have the same connector. You can omit the central "connector" by replacing the battery and charger connectors to male and female of your choice. Example.
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