• You can now help support WorldwideDX when you shop on Amazon at no additional cost to you! Simply follow this Shop on Amazon link first and a portion of any purchase is sent to WorldwideDX to help with site costs.

Search results

  1. Megawatt

    MegaWatt vs. Chinese Imitation 30 amp switching power supply comparison

    That's cool. The reason they last so long is that they don't heat cycle and brake parts like the cheap ones. Also there are parts that increase life like the huge inrush currant suppression thermistor that becomes 200C 3 seconds after you turn it on. They are a different animal.
  2. Megawatt

    MegaWatt vs. Chinese Imitation 30 amp switching power supply comparison

    No vendor change, we just went to double ball bearing fans. The problem is if you reduce RPM you reduce CFM and cooling. To some its not loud if placed away from the radios and mics. To others its a jet engine. To me its not that loud as you can here four running in the 200 amp video. The server...
  3. Megawatt

    MegaWatt vs. Chinese Imitation 30 amp switching power supply comparison

    Feel free to change the fan without voiding the warranty. The only thing I ask is to give me the make and model number of this 25 CFM quite fan so I can use it. The only way I have found to make it quitter is to install less CFM fans. This will increase heat and reduce life.
  4. Megawatt

    MegaWatt Power Supply URL Change

    Oh yeah, were not going anywhere. If you click on our ad it's a dead link for the next day or so. I thought it would be a good idea to point out that if you click on www.megawattpowersupplies.com it still goes to the website. Like I said I am going to keep the old URL too since many people...
  5. Megawatt

    MegaWatt Power Supply URL Change

    Hi guys and gals, we have a new server and domain name. www.megawattpowersupplies.com The old domain www.12voltpowersupplies.us will be down for a few days while we are in the process of completing our 301 redirect. In the future both domains will get you to the same website. Thank you, John
  6. Megawatt

    Have you purchased ham gear because of this site? What was it?

    I put up the challenge before about information on a 17 CFM 12 volt fan than is quieter and I got no response. What other true 50 amp power supplies out there have a quite fans? My fan noise is all air flow. Its not motor or bearing noise. PM me so I can buy one and test it. I would love to make...
  7. Megawatt

    Power supply malfunction

    That is very true.
  8. Megawatt

    Power supply malfunction

    Yes, well said. Unfortunately fuses are designed to handle spikes, inrush current and motor start loads that can be double the value of the fuse.
  9. Megawatt

    Power supply malfunction

    You would hope so. But lots of damage can happen just before it blows.
  10. Megawatt

    Power supply malfunction

    What a MegaWatt you would have to have the MOSFET oscillation frequency run away out of control simultaneously with the failure of the overvoltage protection circuit. This would be incredibly rare and if it did happen could only produce 16 volts.
  11. Megawatt

    Power supply malfunction

    Check out a MegaWatt Power Supply. Inexpensive and well made.
  12. Megawatt

    Delta DPS60M anyone use this?

    Server power supplies can be powerful but the fans are loud and most, unless modified, don't adjust over 12 volts.
  13. Megawatt

    MegaWatt vs. Chinese Imitation 30 amp switching power supply comparison

    Yes, some people are super sensitive to noise. 30 db is equal to leave rustling sound-wise. I have a video of four S-700-12 power supplies running in parallel on my website. Its a great way to compare my voice to the sound of four units running together before you buy. One power supply is a lot...
  14. Megawatt

    MegaWatt vs. Chinese Imitation 30 amp switching power supply comparison

    The fans run all the time to eliminate heat cycling. The constant heating and cooling of the internal parts of a power supply is what causes early failure. The problem is the power supply needs 25 CFM to keep it cool so the movement of air is what you are hearing. The fan manufacturer and my db...
  15. Megawatt

    MegaWatt vs. Chinese Imitation 30 amp switching power supply comparison

    You will love it. If you have any problems or questions just let me know. Thank you, John
  16. Megawatt

    MegaWatt vs. Chinese Imitation 30 amp switching power supply comparison

    The S-700-12 will surge momentarily to two or three more amps but you never want to buy a 50 amp power supply for a 49 amp radio. Its kind of like buying a 150 pound rope to repel off a cliff with a body weight of 150 pounds. That's why the manufacturer is suggesting more amps. Its for over...
  17. Megawatt

    KNOCKOFF MEGGAWATT

    You probably got a bad fan, sorry about that. If you can send it to me I can analyze it and complain to the manufacturer of the fan in case more turn out bad. Did I send you another fan? If its the 50 amp power supply then yes, it has a powerful fan that is louder than the S-400-12s. That's just...
  18. Megawatt

    KNOCKOFF MEGGAWATT

    That's is true, it also will cool better.
  19. Megawatt

    KNOCKOFF MEGGAWATT

    Well thank you. All the new units now come with sealed double ball bearing fans to fight the dust problems. The power supplies are the same price as with the older fans. Its still a good idea to blow dust off the fan though so they don't go out of balance.
  20. Megawatt

    KNOCKOFF MEGGAWATT

    If a power supply says MegaWatt on it its real. MegaWatt is a registered trademark.The use of the name MegaWatt on any power supply would result in legal action. The clones are the ones that look the same but have funky or no names at all on them.