home.social
Sign in Create account

#cascode — Public Fediverse posts

Live and recent posts from across the Fediverse tagged #cascode, aggregated by home.social.

  1. Bornach @bornach ·

    Finally got around to editing video of my experiments in improving response times of slow low-cost ICs such as the

    youtu.be/s1l86nTIWEE
    The improved speed was sufficient to pass data (31250 bits/s) through it

    #transistor #amplifier #optocoupler #optoisolator #pc817 #midi
  2. Bornach @bornach ·

    @mike805
    I tried the trick with the PC817 . IMSAI Guy only showed how the voltage of the transistor base affects the speed of the falling edge. But notice how the rising edge remains largely unaffected.

    By comparison, the common mode NPN amplifier with 150 ohm resistor across base-emitter, yielded noticeably sharper rising/falling edges

    #cascode #amplifier #optocoupler #transistor #electronics #oscilloscope
  3. Bornach @bornach ·

    @mike805
    [IMSAI Guy] explains the cascode amplifier trick
    youtu.be/APUhm2tsCiE

    See Figure 13 High bandwidth optocoupler configuration
    onsemi.com/pub/Collateral/AND8

    I might need to try that for comparison

    #cascode #amplifier #optocoupler #electronics