🚀 go-pugleaf

On Mon, 20 Jul 2009 13:55:27 -0700, Joerg <invalid@invalid.invalid>
wrote:

>John Larkin wrote:
>> On Mon, 20 Jul 2009 11:00:40 -0700, "BobW"
>> <nimby_GIMME_SOME_SPAM@roadrunner.com> wrote:
>> 
>>> "RFI-EMI-GUY" <Rhyolite@NETTALLY.COM> wrote in message 
>>> news:4a64ac0d$0$5646$9a6e19ea@unlimited.newshosting.com...
>>>> John Larkin wrote:
>>>>> On Mon, 20 Jul 2009 08:02:20 +1000, "David L. Jones"
>>>>> <altzone@gmail.com> wrote:
>>>>>
>>>>>> John Larkin wrote:
>>>>>>> On Sun, 19 Jul 2009 22:04:25 +1000, "David L. Jones"
>>>>>>> <altzone@gmail.com> wrote:
>>>>>>>
>>>>>>>> As promised, an expos� of an issue with the Rigol DS1052E
>>>>>>>> oscilloscope in my latest video blog:
>>>>>>>> http://www.alternatezone.com/eevblog/
>>>>>>>>
>>>>>>>> Dave.
>>>>>>> Do the scopes work?
>>>>>> Yep, they work. So Rigol are obviously getting away with it by hook or 
>>>>>> by crook.
>>>>>> If AD are deliberately under-speccing their normal chips, then it's a 
>>>>>> clever ploy by Rigol to exploit it.
>>>>>>
>>>>>> Dave.
>>>>> We overclock/overstress parts when there's a substantial payoff. One
>>>>> Freescale uP is rated for 16 MHz clock, actually gets wonky at 44, so
>>>>> we run it at 20. One microwave schottky diode is rated for 2 volts
>>>>> reverse, leaks a bit at 7, so we use it at 4. Adding a heatsink to an
>>>>> FPGA can buy some timing margin. Some diodes and cmos parts leak four
>>>>> or five orders of magnitide less than the datasheet guarantees. An
>>>>> 0603 resistor can dissipate a quarter of a watt safely. The trick is
>>>>> to take calibrated risks where there's demonstrated margin and big
>>>>> paybacks, and take zero risk everywhere else.
>>>>>
>>>>> John
>>>>>
>>>> Doesn't the manufacturer sort of put themselves at risk that the chip 
>>>> vendor decides to change the process or ship marginal product ("Nobody is 
>>>> buying our 100 MHz parts anymore, so we will save a few bucks and make and 
>>>> ship 40 MHz parts (that pass only to 45 MHz)")?
>>>>
>>>> -- 
>>>> Joe Leikhim K4SAT
>>> Yep. That's what I would be extremely concerned about. If I ever decided to 
>>> run a part over its rated limits (speed wise), I would put in hooks, for 
>>> production testing, to lower its supplies to their minimum and then run 
>>> those tests at the maximum rated d.u.t. temperature.
>>>
>>> Of course, in Larkin's case, the only person that can fire him for non 
>>> performance and insubordination is his wife.
>>>
>> 
>> Hey, nowadays I report to The Brat.
>> 
>
>I was just going to say, didn't she show an interest in the biz lately 
>and even do a layout? Remember, she may one day be the one deciding 
>which nursing home you guys go to ;-)

She is doing all our PCB layouts and managing engineering [1]. And
doing all our press releases. Not bad for a 22-yo with a minior in
psychology and majors in softball and beer pong.

I asked her a couple of months ago, "Say, do you want this company?"
She thought about it for a few hundred milliseconds and said yes.

John


[1] And she does my schematic entry for me. I still draw pencil on
blue-grid D-size vellum.