Early Voltage problems

Aug 24, 2010 23 Replies

On a sunny day (Sat, 11 Sep 2010 10:32:09 -0700) it happened Jim Thompson wrote in :

I doubt it, already you forgot is was GW Bush who ignored the intelligence warnings.

8 years of republican rule did not find Osama. You killed a lot of innocent people in Iraq though.

So who is the real babarian?

He did not increase the deficit as much as your scream club did. Clinton even had a surplus.

Some-one kindly pointed out that I'm only seeing part of the photo-current as it will divide between the two PN junctions. So, my data is nonsense. Why so much current went that-away is a puzzle. Also, the gains of the two stages should be similar, so ~100 per my measurements of Q2. This means that my researched '0.15~~0.16%' CTR is nonsense, too.

I've just found a 6n140 model at

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The 6n140 has a photo-diode driving a Darlington, but the Q2 has no accessible base. Instead, an internal EB resistor ~5k aids pulse recovery.

IRTC's Subckt uses a tweaked LED, two generic 2n2222 NPNs (BF=100, VAF~74) and a polynomial transfer function for curve matching. Yup, it is not a 'physical' model...

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Neither has Obama, but he sure goes on lots of vacations.

Politicians should only get paid if the budget is balanced, and there is enough left over to pay them.

Don't feed the Panteltje troll. He's the _other_fairy_ in the Nutterlands :-) ...Jim Thompson

-- | James E.Thompson, CTO | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona 85048 Skype: Contacts Only | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at

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| 1962 |

Democrats are best served up prepared as a hash Otherwise the dogs will refuse to eat them :)

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