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  1. Martaine2005

    Replacing fets for a DC-AC inverter?

    Yep, Cheap, typical chinese specs. Seems you found a replacement. They are not expensive, they average at £1 each. Between £8 and £12 for 10. Martin
  2. Martaine2005

    advantage and disadvatnge of AC to DC converter circuit

    It doesn’t matter how many times I see the formula and math. It still goes WHOOOSH.. Martin
  3. Martaine2005

    SMPS

    From AAC: I have a 18VDC Charger which is showing 5VDC, Martin
  4. Martaine2005

    COVID-19

    We are safe and sound. Keeping our distance and having fun.
  5. Martaine2005

    Solder pins to small holes on my TM1637 4-digit display

    Wish that sentence was in my ex-wifes vocabulary . Practise with header pins, you wont fry or burn the segment display. You could then use them for inserting the display. (If you want, of course). Martin
  6. Martaine2005

    buck-boost vs buck then boost

    Wow, 10 years later and 2 Mods answer!. Just saying.... Martin
  7. Martaine2005

    Game Boy Advance SP Motherboard Question

    My bad. Teach me for typing while bumped around on a bus!. Ignore what I said and follow @Harald Kapp ’s instructions.
  8. Martaine2005

    Game Boy Advance SP Motherboard Question

    The gold bits are connections. They look ok. However, the soldering bottom right in your photo looks dodgey!. Make sure the solder has not bridged another connection. Use a magnifying glass. Martin
  9. Martaine2005

    Questions silicone gel in plastic and rubber, good ou bad?

    Use the auto gel on a vehicle and put the game in the trunk/boot..
  10. Martaine2005

    Questions conserve game console

    And don't forget the silica gel..
  11. Martaine2005

    Oscilloscope Reticle Alumination Miniature Lamp Availability

    Hi, are you sure the existing lamp is of the correct type for the graticule?. I have the Fluke PM 3092 200MHz 4 channel. Anyway, I found this while researching mine. 'quote'... The PM3335 CRT scale illumination used a 24 Volt midget flange base CM8176 lamp. The new lamp was not nearly bright...
  12. Martaine2005

    6KVA UPS Inverter is not charging the batteries

    Sounds like the batteries may need replacing. Have you checked the manual for beep codes/errors or continuous beep tone? Martin
  13. Martaine2005

    Through hole Diode Identification

    Perhaps this 1s2473? Your camera angle may be making it look fatter? Martin
  14. Martaine2005

    Solar lights charging board component

    Your circuit has 1 resistor and 1 inductor. Martin
  15. Martaine2005

    Solar lights charging board component

    Maybe something like this? Martin
  16. Martaine2005

    Solar lights charging board component

    So, which is it. 0.5v or 1.2v? Martin
  17. Martaine2005

    Solar lights charging board component

    Hi kwicher, Somebody will be able to decipher the 8 pin dip fairly easily. But in the mean time, have you checked the switch? it certainly looks corroded and rust evident on the inside. Try bypassing the switch and then check the output. Martin
  18. Martaine2005

    CCTV CAMERA LINGO

    That is a terrible advertising ploy. I thought High Definition instantly and TVLines. You should email the company and ask them what HD means with their camera model. While you are at it, ask them what the CE marking means. HD = Hing’s Discounts CE = Chinglish Export Martin
  19. Martaine2005

    Servo with higher voltage

    Mine either really. It was more to do with the OP's concern about regulator drop out and then a bypass switch. Simpler to series a couple of diodes. I am with you though, a 4.8v pack. All my models have 4.8v receiver packs and some work for an hour or more. Some of my larger helicopters have 9...
  20. Martaine2005

    Actuator control for my nuclear missile complex

    You can't have all those single pushes of the same switch to do all those different functions. You can have them sequenced. 1.open, 2.close, 3.stop, 4.reverse etc. But all this will require programming a microchip. Martin
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