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  1. Martaine2005

    Questions lithium polymer battery

    Nor do anybody else on this forum. Read the good advice given. If you can’t take it a part by yourself, then stop hoarding old equipment.
  2. Martaine2005

    Questions lithium polymer battery

    Probably cheaper buying a new unit!.
  3. Martaine2005

    Questions lithium polymer battery

    @Audioguru, you have the patience of a saint. Martin
  4. Martaine2005

    What task does this item perform for society?

    Came in 2nd? Movie reference?. Pharaday, explain yourself please. Martin
  5. Martaine2005

    What task does this item perform for society?

    Or, why was it found under a rock that clearly did not belong there??. I have two ideas... The IR extender was dropped and a rock off the rock wall fell and covered it.. Or The burglar left it covered with a rock from the wall indicating the premises for a later 100% clear out. Unfortunately...
  6. Martaine2005

    What task does this item perform for society?

    I’m glad you cleared this mystery up John. I spent an hour on the train home staring at the picture imagining what it could be!. While living in France, I saw something similar indicating the electric fence was powered on and the LED indicated the entry/exit point. You would disconnect two...
  7. Martaine2005

    convert 3v to 12v?

    And what would that be? My crystal ball is on holiday today. Martin
  8. Martaine2005

    RED LED Darkroom light

    Hi Duke, my neice also does black and white photography. She uses E27 GU10s in red 620nm. They have 20 red LEDs in each. She has 4 of these and the dark room is very red!!. She says it works the same as incandescents but could be brighter if she added more. Martin
  9. Martaine2005

    Help me please to get a good night's sleep!

    Uh huh...I’ll take that advice. Thanks Dave. Martin
  10. Martaine2005

    Triple output power supply blowing main fuse

    The series bulb limits the current. Also acting as a resistor, there is now no short detected. I use different wattages for different appliances. A 300W will work too. The X caps are across the input. Removing them has no consequence other than external interference like clicking through...
  11. Martaine2005

    Triple output power supply blowing main fuse

    Incandescent bulb!! You can simply remove the X2 caps for testing. They could have shorted the input. Martin
  12. Martaine2005

    Triple output power supply blowing main fuse

    Incandescent bulb!!
  13. Martaine2005

    Triple output power supply blowing main fuse

    I think this is the perfect scenario for a series bulb. Put an AC 100W in series with the mains in. You can put it directly across the fuse. The bulb will light brightly indicating a short but wont blow any other components. You can now troubleshoot the ‘live’ circuit. Martin
  14. Martaine2005

    British Television?

    I’d be happy to buy a DVD or Subscribe to a channel I wanted to watch/view. We don’t have a choice. The BBC are acting like the SS of 1945. If your house recieves it, pay for it!. If you buy a new TV, post code first. You cannot buy a TV without it!!. Or so they think...........
  15. Martaine2005

    Parallel resistance

    I should live in AUZ... Hello Sheila..
  16. Martaine2005

    Parallel resistance

    I’m still doing the math. 1/120x3. I can however count my empty cans!... Martin
  17. Martaine2005

    Electronic door lock is safe?

    I doubt it would cause a trapped scenario. Plastic melting point is 200-300 degrees C. Wood burning point is apprx 300 degrees C. Aluminium is about 650-700 degrees C. Steel is 1300-1600 etc. One would hope the occupants were out long before these temperatures. Martin
  18. Martaine2005

    isolating transformer and variac - what order?

    I have never actually reduced the voltage while using the series bulb. I just set 240v, plug in the DUT and turn the series bulb unit on. I’ll try to add a picture of the unit I made later. It has two bulbs and switches in parallel. I can obviously change the bulbs for different wattages but...
  19. Martaine2005

    PAL vs NTSC?

    Yes Bertys. What is the frequency for both given A Pal and NTSC.
  20. Martaine2005

    isolating transformer and variac - what order?

    If the variac was connecred first, wouldn’t that enable higher current at lower voltages?. Martin
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