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  1. Arouse1973

    Looking for a connector to use on my project

    USB 3 has nine pins, connectors are cheap and compact. Any good? Adam
  2. Arouse1973

    USB close circuit

    You can also get USB to 12 Volt boosters, that might work depending on the amount of power required. Adam
  3. Arouse1973

    USB close circuit

    You beat me to it Harald, I was just thinking a relay will also work and give some isolation also. Thanks Adam
  4. Arouse1973

    USB close circuit

    Will a transistor not work which is switched in when the USB has power. A simple NPN or MOSFET switch should work I would have thought. Adam
  5. Arouse1973

    Monitoring motor load in a circuit

    You could use a micro switch to detect end of travel this then kills the power automatically. Other than that then yes a current sense opamp or something like that could be used. Adam
  6. Arouse1973

    Selecting PWM Freq for Speed DC Motor Control

    I think an inductor in series would be a good idea if the motors inductance is quite low. You will have to play with the value a bit not knowing the inrush current it would be difficult to work out. Do you need that much capacitance? Also why the 4 FETs and not one, are these ones you have...
  7. Arouse1973

    Selecting PWM Freq for Speed DC Motor Control

    Hi Fish Do you have an initial schematic yet, we can see? Adam
  8. Arouse1973

    Permission to come aboard

    Hi Murat and welcome. Adam
  9. Arouse1973

    Identify part to replace help.

    Well done Dan
  10. Arouse1973

    Identify part to replace help.

    Yes good point Kris, what caused the IC to fail like this is probally still hanging around. Adam
  11. Arouse1973

    Identify part to replace help.

    Can you read any numbers or letters on the device. They are many thousand parts that look like that, and many do something else. Adam
  12. Arouse1973

    looking for circuit designer for a youth project

    Ok some questions. Can you order electronic components Are you able to assemble electronic components on bread board Do you want a PCB designed for you. What interaction from the group do you want, press buttons or just switch power on. What do you want the colour changing LEDs to do, lots of...
  13. Arouse1973

    looking for circuit designer for a youth project

    Ok thats sound simple. Are these school kids that you want to build circuits?
  14. Arouse1973

    help me - block diagram of stereo amplifier

    I do that all the time, I bet they think I am a bit backward. Adam
  15. Arouse1973

    looking for circuit designer for a youth project

    Why dont you just tell us what you want to do. I love helping people and its for free so give it a shot. I cant see it being that difficult to be honest. Adam
  16. Arouse1973

    Change TV to receive UHF Channels

    Yes I cant see why not. But might be easier to buy another TV. Adam
  17. Arouse1973

    L.P and H.P circuits

    Nice Harald. Adam
  18. Arouse1973

    ICSP in PIC18F4550 using LVP enabled

    It also means for safety critical applications if one micro stops working a supervisor micro can re-program it. Adam
  19. Arouse1973

    The gauge factor of a strain gauge

    I think it must mean the resistance goes down with strain. I suspect different strain gauge materials are used for this? Adam
  20. Arouse1973

    ICSP in PIC18F4550 using LVP enabled

    That's one way to do it.
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