Loading ...
Sorry, an error occurred while loading the content.
 

1381 SE help!

Expand Messages
  • tksean
    hi! i just built a 1381 SE using 1381J, one 3300 uF e-cap, 1815 and 1015 transistors, pager motor and one 2.2k resistor. the pager motor only runs at 2.96
    Message 1 of 2 , Mar 1, 2002
      hi! i just built a 1381 SE using 1381J, one 3300 uF e-cap, 1815 and
      1015 transistors, pager motor and one 2.2k resistor. the pager motor
      only runs at 2.96 volt. if i'm not mistaken, shouldn't this SE start
      kicking at 2.7volt with this 1381J voltage detector? the pager motor
      resistance is 7.7 ohm. i replaced the 2.2k resistor with 7.7k
      resistor, the result still the same. any idea on how to reduce the
      trigger voltage down to 2.7v? thanks.

      tksean
    • Soldering Gun Guy
      1381 Triggers generally work between their value and +0.2V. That means that a 1381J may trigger between 2.7 an 2.9V. César ... From: tksean To:
      Message 2 of 2 , Mar 1, 2002
        1381 Triggers generally work between their value and +0.2V. That means that a 1381J may trigger between 2.7 an 2.9V.
         
        César
        ----- Original Message -----
        From: tksean
        Sent: Friday, March 01, 2002 7:13 AM
        Subject: [beam] 1381 SE help!

        hi! i just built a 1381 SE using 1381J, one 3300 uF e-cap, 1815 and
        1015 transistors, pager motor and one 2.2k resistor. the pager motor
        only runs at 2.96 volt. if i'm not mistaken, shouldn't this SE start
        kicking at 2.7volt with this 1381J voltage detector? the pager motor
        resistance is 7.7 ohm. i replaced the 2.2k resistor with 7.7k
        resistor, the result still the same. any idea on how to reduce the
        trigger voltage down to 2.7v? thanks.

        tksean


        To unsubscribe from this group, send an email to:
        beam-unsubscribe@egroups.com



        Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
      Your message has been successfully submitted and would be delivered to recipients shortly.