Hello together,
what about another theory:
J.W. first developped the negative reference cirquit in the datasheet.
In the negative cirquit a diode is essential that on no circumstance the
diode between reference and heater within the LTZ is not forward biased.
Later on J.W. gave the order to his
Mitch,are you referring to startup behaviour,
like Bob Smither suggests?
Just now I was trying to imagine the startup
(it's too late for firing up ltspice, I have to sleep :) )
and I was thinking that on startup both inputs
are zero and output can take both ways: go down (remain approx zero)
or g
On 11/07/2012 06:02 PM, Fabio Eboli wrote:
> Hello, in this thread on eevblog:
>
> http://www.eevblog.com/forum/projects-designs-and-technical-stuff/does-anyone-know-what-this-diode-is-for/
>
>
> a guy named DiligentMinds.com asked the question
> about why there is a 1N4148 diode on the output o
Positive input voltage range for an LT1006 is typically 1.2V below the
positive rail.
mitch
- Original Message -
From: "Fabio Eboli"
To:
Sent: Wednesday, November 07, 2012 7:02 PM
Subject: [volt-nuts] LTZ1000 reference appnote question
Hello, in this thread on eevblog:
http://w
Hello, in this thread on eevblog:
http://www.eevblog.com/forum/projects-designs-and-technical-stuff/does-anyone-know-what-this-diode-is-for/
a guy named DiligentMinds.com asked the question
about why there is a 1N4148 diode on the output of
the opamp in the LTZ1000 reference circuit, the one
des
I've used Talon as well, their prices are usually only affordable by
taxpayers via their respective governments but like this one they have
surprised me in the past. One time they sent me the wrong part and
they sent me the replacement and asked at
my convience to send the other one back
On Wed,
Thanks John -- You are the second one to suggest them. Talon is the deal for
sure. I ordered two of these parts. Fluke used them in a lot of gear.
Have any volt-nuts modified the chopper system of the 343A to reduce parts
count and improve stability? Seems like a good place for an LT1150, OPA62
