556 speed control narro range

Discussion in 'The Projects Forum' started by lancellot07, Jul 10, 2012.

  1. lancellot07

    Thread Starter New Member

    Jul 2, 2012
    anybody who can comment on the attached schematic speed control1 ? is it really a narrow range of control?
    What can be done to widen the range if it is narrow range?

    What about speed control 2? is there a problem on speed control 2?

    thanks in advance for comment and suggestions..
  2. mcasale

    Active Member

    Jul 18, 2011
    It's unclear what you are trying to do.

    It looks like it's switching a DC motor on and off.