Tell us about yourself!

Complete Your Profile
  • mitchells365 commented on markee2's instructable Simple Ni-Cd Battery Charger7 months ago
    Simple Ni-Cd Battery Charger

    I managed to build the circuit and it seems to work except for the red led, it won't turn on when the circuit is charging the battery, any suggestions?

    View Instructable »
  • mitchells365 commented on markee2's instructable Simple Ni-Cd Battery Charger7 months ago
    Simple Ni-Cd Battery Charger

    If you need to charge an 18 volt battery, I would recommend a 20 volt zener diode. An 18 volt NiCd Battery should be fully charged at about 21 volts. I am going to try a 20 volt zener and I'll comment with the results. For the resistor I would chose the one rated for the current of your wall wart or power supply. (I would recommend a 24 volt supply)

    View Instructable »
  • mitchells365 commented on trebuchet03's instructable Making A Thermocouple1 year ago
    Making A Thermocouple

    It wouldn't be worth trying, considering that the Seebeck Effect at each junction would only produce a few milliVolts each, you would have to use hundreds of junctions which would make it very complicated and also very cumbersome to make

    View Instructable »