[sdiy] Oakley S&H clock LED pulse extender

Needham, Alan Alan.Needham at centrica.com
Wed Jun 4 21:39:10 CEST 2014

Second send - this time 'to all'

		      +15 V
		    A +----------+
		     _|_               |
		     _V_  LED     |
		      |                   |
		      |                   |
		      >                   = Ca
		      <  R2            |
		      >  1.8 k        |
		      <                   |
		      |                   |
		    B +----------+
		       |                  |
	D    R3	      /  Q1            |
      ---->|-+-^v^---|   BC549     = Cb
  	    |                \  NPN       |
	   =  C3           |                 |
	    |                 |                 |

Dave Brown just pipped me on this, but:- Series diode, cap to ground and I thought resistor to base, not ground.
This allows cap to charge to input voltage, not limited by B-E junction, resistor then limits discharge speed?

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