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  1. ramussons

    Power supply series connection

    I think it does call for a protection. 2 similar power units are not likely to behave exactly the same under a short circuit / overload condition.
  2. ramussons

    Will the USB 3.0 cables get too hot?

    It is quite possible that the 5 Volt BUS'es on the laptops are not exactly the same, and that will lead to circulating currents; whether the AC chargers are connected or not. And it is not based on USB 2 or USB 3. But, my guess is, there will be some sort of protection to prevent 5 Volt...
  3. ramussons

    Power supply series connection

    Ah.. YES. I get it. Thanks a ton.
  4. ramussons

    Power supply series connection

    Hmmmmmmmm......... how about an example ?
  5. ramussons

    Analog USB... yeeeeeah !

    I've come across a lot of computer speakers with a Plug N Play to a USB. maybe something like that o_O
  6. ramussons

    120VAC to 6VDC Lamp Transformer?

    https://www.alibaba.com/product-detail/popular-6v-5a-power-supply_60379873332.html?spm=a2700.7724857.main07.1.51688cf6WdNNYJ&s=p
  7. ramussons

    Who has a wiring schematic of the major parts of a CRT TV and CRT monitor?

    https://www.google.co.in/search?q=schematic+crt+tv&client=firefox-b-ab&dcr=0&tbm=isch&tbo=u&source=univ&sa=X&ved=0ahUKEwjC_fjl48DXAhVHFJQKHZhLB6kQsAQIJA&biw=1280&bih=574
  8. ramussons

    Analog TV Tuner struck by lightning

    The tuner is only one of the many sub systems that would have been damaged. You will need to do a step by step fault identification. Start with the power supply.
  9. ramussons

    Connecting a vintage microphone to a PC

    If that mike specs served the communication requirements of that day and today it cannot, it only means that the human hearing capability has deteriorated over time. :D:D:D
  10. ramussons

    Hai to all

    Off track: Saravanan, there's quite a bit of difference between Hi and Hai - if you follow Hindi :D
  11. ramussons

    Smps help

    Some PSU's require a minimum load on 5 volts line. A HDD will not be spinning all the time, it will start and then stop after a few seconds. Try using a 6 volt, 6 or 12 Watt bulb on the 5 V line.
  12. ramussons

    Connecting a vintage microphone to a PC

    * Tip and Ring need to be connected together; its a MONO mic * The unit will over drive the MIC input to the PC; use the Line IN if available. * If Line IN is not available, you will need to Attenuate the MIC output.
  13. ramussons

    Looking for a specific transformer

    A SMPS would be better option.
  14. ramussons

    Looking for replacement Transformer

    A single transformer with those specs may not be easily available. A 110 V to 12 - 0 - 12 V @ 2A with an additional 6 V @1 A maybe available. Else you may have to go in for 2 transformers with secondaries of 12-0-12 V @ 2A and 6v @ 1A.
  15. ramussons

    Power Supply Transformer Markings

    Can you give a nice photo of that power supply board - both sides?
  16. ramussons

    Help, trying to replace a transistor!

    How about a link to the original YouTube video? Maybe we can guess which transistor was replaced.
  17. ramussons

    Help, trying to replace a transistor!

    The transistors have been located. .
  18. ramussons

    Now I am going to ask 3 stupid questions, please dont laugh. but i cant seem to find info

    The current depends on the load connected. V / R = I. If the load is unchanged, the current flowing will reduce when the voltage is reduced. Since the variac is wound with the same gauge of wire, the Permitted current will be same, irrespective of the voltage. Yes. But it will be highly...
  19. ramussons

    Keypad with 3 pin hall effect sensor

    MosFET's Source-Drain conduct both ways. You 3x4 Matrix should be workable replacing the switches by the MosFET.
  20. ramussons

    Keypad with 3 pin hall effect sensor

    Are you keen on a 3x4 matrix setup? Why not a Decimal to BCD encoder?
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