Recent content by Hilo90mhz

  1. Hilo90mhz

    Connecting multiple PC's to one monitor, keyboard

    use WIN VNC, its a free program that lets you remotely controll the computer just like you were at the desktop.. Through a TCP/IP network.
  2. Hilo90mhz

    Convert 0-30V 3A PSU to 5A or more

    Hey.. ya, sorry about that, i got my decimal places mixed up ;D Im actually using 5.1v 1W zeners, with a regular diode in series, using the foreward voltage drop to bring it up to about 5.6v.. I have a 20mhz DSO, I dont think they are so slow that the peak is missed.. the sine just gets a...
  3. Hilo90mhz

    Convert 0-30V 3A PSU to 5A or more

    Thanks for spoting the error Audioguru!, I thought that connection looked funny.. but didn't bother to check it against the original schematic.. The bridge rectifier is a junkbox model CM3501 = 35A 100V It has a nice aluminum case for bolting to a heatsink, measured at .436 volt drop per diode...
  4. Hilo90mhz

    Variable Freq Drive

    I think its doable.. but tons of work involved in firmware/circuit design. I have a friend who is building a 3 phase motor controller for an electric car.. He started about the same time I did on my 3 phase inverter, and neither of us are finished yet... (started april 2003) but of course not...
  5. Hilo90mhz

    remote control using radio freq

    Did you check for a DC-DC converter inside that wireless MIC ? most circuits that run off a single cell use a small DC-DC converter to up the voltage to a more reasonable 3.3v or 5v. Maxim IC makes some really simple dc-dc converter chips, with only a few external components needed. Ive used...
  6. Hilo90mhz

    Convert 0-30V 3A PSU to 5A or more

    Wound the transformer, etched and assembled the PCB, scrounged for resistors.. Just got it working a few minutes ago... The transformer puts out 26.06V AC unloaded and 25.78V AC loaded with 1.2A (on output of regulator) After the rectifiers = 35.16v DC unloaded and 33.47v loaded with 1.2A...
  7. Hilo90mhz

    Convert 0-30V 3A PSU to 5A or more

    Thanks for all the help everyone :) Thanks, I really need it... trying to switch 350Amps at 48v average is no joke yup, I discovered that by comparing pinouts.. and designed my PCB accordingly. Good point.. I assumed I could do some stress testing after it was completed and if it works it...
  8. Hilo90mhz

    Convert 0-30V 3A PSU to 5A or more

    Hello everyone :) Im in the process of building this PS.. Using the updated SMARTER kit schematic posted in this thread... I know there has been tons of talk about using higher voltage OP amps and issues with under rated transformers.. Ive read both threads about 1.5 times... - alot of info to...
See more
Top