PLAN B analog blog

Still shipping! I've asked some who have received theirs to post reviews -
hopefully they will be coming soon.

- P



selfoscillate wrote:

> 
> 
> 
> hello peter,
> 
> it's been almost 4 weeks since you sent the posting below.
> any news about the vco's?
> 
> best wishes
> 
> ingo (still waiting patiently)
> 
> 
> 
> 
> 
> --- In PLAN_B_analog_blog@yahoogroups.com, Peter Grenader
> <peter@b...> wrote:
>> All,
>> 
>> Below please find three links of pictures taken about a half hour
> ago of
>> what I'm up to today...and every day for the next five weeks.
>> 
>> The following fotos show three PLAN B's in the various test stages -
> there
>> are four, to wit:
>> 
>> The first test is done with only the VCO's core components
> installed.  This
>> is the PCB on the right with the scope probe coming off it..  This
> test
>> verifies that the cores are operational and gives me an opp to
> adjust the
>> triangle symmetry if required while everything is easy to get to.
>> 
>> The second test is of the completed board with the main waveshapers
> and VC
>> inputs installed.  This is the partially assembled unit on the left
> of the
>> picture.  At this test I verify that the sine and saw waveshapers
> are
>> operational and that the VC input ranges are correct . I also
> adjust the
>> 1v/oct scaling at this point.  IF noise is going to pop up, the
> addition of
>> these components is what's going to do it so again, I test for this
> before
>> everything is slapped together.
>> 
>> The third test is of the completed unit - this is the unit shown in
> the
>> center in these pictures.  At this test I just run through all of
> the
>> operations with a scope and....my ears. This particular unit in the
> photo is
>> set to ship to Eric as soon as test 4 is complete
>> 
>> Test 4 is a 48 hour burn in in which the unit runs in an enclosure
> under
>> it's own heat .  An example of this is shown in picture 3 (!) .
> Actually,
>> I've got none in B/I at the moment. Some of the expo boards are
> potted
>> before this test (it depends on which tempco configuration I've
> used - there
>> are three). The expo boards can be seen in these photos as the
> little plug
>> in boardlette that sits on top of main PCBA in the back - he ones
> with the
>> round metal can transistors on them, either a the Linear Systems
> LS318 or
>> LS312, again depending on the application requirements of the
> customer.
>> 
>> Here ya go:
>> 
>> http://www.buzzclick-music.com/testpic1.JPG
>> 
>> http://www.buzzclick-music.com/testpic2.JPG
>> 
>> http://www.buzzclick-music.com/testpic3.jpg
>> 
>> OK OK OK , foto three is a joke - but everyone's been at wits end
> lately, i
>> thought it might help.
>> 
>> I am basically running an assembly line for the next 5 weeks
> getting these
>> units completed.  With any luck, all 40 that remain  will be
> shipped within
>> 4 weeks time.  That is a challenging estimate, but achievable if I
> keep my
>> nose to the grindstone.  If you've sent a request of status --
> there it is!
>> 
>> Sorry for the crossposting
>> 
>> best,
>> 
>> - Peter Grenader
>> 
>> 
>> more info on the plan B is here:
>> 
>> http://www.buzzclick-music.com/model_15.html
> 
> 
> 
> 
> 
> 
> 
> Yahoo! Groups Links
> 
> 
> 
> 
> 
> 
>