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  1. ramussons

    Shielding a Linear Heathkit Power Supply

    In all probablity, it's the Magnetic Field from the Transformer causing the Beam Deflection. A soft iron shield should give good protection if it is thick enough. If the magnetic radiation is power based at 50 or 60 Hz, there is not likely to be any permanent damage in the long run. But if the...
  2. ramussons

    Resonance Frequency

    I don't see how there can be more than 1 resonant frequency. Let's see how the discussion progresses.......
  3. ramussons

    Resonance Frequency

    Resonance will be dependent ONLY on L and C. Rc and Rs will only affect the "Q" of the Resonant Circuit.
  4. ramussons

    Transformer smoked

    It's also possible that the first Power Unit was faulty and its transformer blew. Yes, a 2 Amp fuse would help.
  5. ramussons

    New to Electronics, having trouble understanding Infrared.

    Welcome to the Forum. Hope we can learn from each other in the long run.
  6. ramussons

    Transformer smoked

    Measure the voltage supply. If it drops appreciably when connected to the "mist maker", there is a problem with the mist maker. maybe it's a smoke maker.....:D
  7. ramussons

    LC Oscillator

    Remember For a Frequency range 1 MHz to 1500 MHz, do you realise that the variation of LC will be (1500)^2 = 2,250,000 ? :eek: If you can make an Inductor Capacitor Combination that can smoothly vary over such a Large Range AND keeping in mind the Size, Weight, Magnetic and Electrostatic...
  8. ramussons

    How does an ATX power supply work?

    You may not have to breakup a ATX PSU to make a bench supply. Google and you may get an idea that suits your requirement.
  9. ramussons

    Resistor value

    How did this value of 120 Ohms come from? Was there a calculation? Can you ask the question in a different style? "value of R3" can only be "Ohms",
  10. ramussons

    HELP ME PLEASE......

    From which Institute please.
  11. ramussons

    CRT Tv sound issue

    If the picture is fine, the problem is likely to be in the audio subcarrier pickoff filter (4.5 MHz or 5.5MHz) and the following FM detector.
  12. ramussons

    Difference between variable transformer and adjustable electric voltage regulator

    The first is a Variable Auto Transformer where you change voltage by moving a sliding contact over the pickup windings. Consider it a transformer with a very large number of tappings to select. The second is an Electronic device that controls the "average" voltage by using part of the sine...
  13. ramussons

    Sharing an audio output between 2 amps

    You are mentioning a "mono" output in your computer. I have not seen a computer that gives a "mono" output. That aside, from what your schematic shows, connecting the mono amp parallely to the monitor as you have shown is okay. My suggestion was presuming that the computer has a stereo...
  14. ramussons

    Sharing an audio output between 2 amps

    The input impedance of the amplifiers, will normally not be an issue. But in your case, you will need to convert the stereo to mono to feed the mono amplifier. You can connect the display amp without any problem. Connect 2 pieces of 47 K resistors to the input of the mono amp and connect the...
  15. ramussons

    Sharing an audio output between 2 amps

    No,you wont need any additional "circuitry". Use something like this and use the 2 outputs - 1 for the monitor, the other for the inside amp. http://www.amazon.com/Hosa-YMM-261-Stereo-Breakout-Cable/dp/B000068O5H
  16. ramussons

    Help, connecting a 3-position/2-Pole Slide switch

    http://www.musikding.de/Mini-rotary-switch-2P3T http://www.oddwires.com/slide-switch/ https://www.google.co.in/search?q=2p3t+toggle+switch& .....google ....
  17. ramussons

    Help, connecting a 3-position/2-Pole Slide switch

    And I reduced it to 20 from 2K :D http://www.ebay.com/itm/SW19-20pcs-Miniature-Slide-Switch-3-position-2P3T-ON-ON-ON-New-/221114977780
  18. ramussons

    Help, connecting a 3-position/2-Pole Slide switch

    There cannot be a 3 position 4 pin SLIDE switch. :(
  19. ramussons

    Help, connecting a 3-position/2-Pole Slide switch

    No, this switch will not replace a 3 position. Actually, each pole of a 3 position switch has actually 5 pins. So the original switch would have 10 pins, 5 per pole. But 2 are connected together, so the number of physical pins will be 4 per pole, but the missing pin position is still accounted...
  20. ramussons

    *Help* with cassette recorder

    Look for a broken belt.
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