Re: A novel shutter tester

[E R Swanson <ers@xxxxxxxxxxxxxxxxxxxx>]

I've been thru Radio Shack and the Jameco catalog but no sign of a BPW40
visible light transistor required by the circuit. Found a BPW77 in Jameco,
but not the same critter. Radio Shack has a bunch of IR transistors, but
not one visible light... Anyone have any recommendations? 

Elliott

On Tue, 19 May 1998, Paul A. Lehman wrote:

> E R Swanson wrote:
> > 
> > This design is terrific. I have a handheld tester to use in the field (the
> > Calumet version) but I'm really impressed by the clever use of a .wav file
> > editor to get this kind of info. I'll have one in operation in a few days!
> 
> A recent posting to the other list last night pointed
> out that if you have a stereo card in your computer you
> can have two shutter circuits being monitored
> simultaneously via the left and right channels. This
> would allow testing of two lenses for sync with each
> other, etc.
> 
> If you get it working, let us know how it works out.
> Paul A. Lehman
>