Electronics Forum / Design / May 2007

I'm trying to figure out how to implement a Gm stage. I understand the
basic idea - voltage in, current out - and I've seen some figures like
(a) and (b) shown in the following diagram, ie. a differential pair
with no load representing a Gm stage:

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First of all, I apologize if this is the wrong group or if this
question has been addressed in the FAQ.
I've been interested in circuitry for a while, and am now trying to
design them. One thing in particular I want to do is create a setup

Hey all;
This is kind of picked up from the 'can I do this with a uProcessor' thread.
Eeyore got talking about using JFETs as a replacement for relays. This is
what I've come up with, but I'd be glad to know of a better way, since I

http://www.adrianart.com/mg.html
John

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can some one let me know what is the best ipod one can buy

Hopefully this is the right group for these two questions:
1)  For a photodiode, the series resistance is due to the contact
resistance (as one factor), but what is the source of a photodiode
shunt resistance?  Is it simply due to the inherent resistence of the

I got this the other day, but I find it the most usefull thing I have seen lately.
Basically an Internet quickie guide.
http://www.hotalways.com/
greg

Before posting I read a lot of message several forums.
I run the Dynamic C 10.11 with a Rabbit Core Module RCM4100. I have
programmed several times the module on my own board composed of a 3V3
power supply, a LED connected to PE1 and nothing else. The /reset in is

Recently, I acquired an HP ovenized oscillator (HP10544A)which was
missing the proportional oven controller.  I found the schematic for
the oscillator at the following link:
        http://www.leapsecond.com/museum/10544/

CFP: International Conference on Circuits and Systems ICCS 2007
From: International Association of Engineers (IAENG)
San Francisco, USA, 24-26 October, 2007
http://www.iaeng.org/WCECS2007/ICCS2007.html

I was looking for a way to audio AM a low MHz signal, and then I
discovered this product, the Philips QL inductive lighting system.
http://www.lamptech.co.uk/Spec%20Sheets/Philips%20QL85.htm
In particular, the 2.65 MHz 85W power supply, sold separately. I

I'd like to put a low power laser on a moveable jig.
This is to burn cuts into 16mil vinyl graphics material for art work.
I'm clueless on :
laser types

Morning All
Guess this is really 2 questions, first up.....
I am still using an old DOS version of EasyPC Pro for PCB layout,
mainly because they want a stack load of money to upgrade.  I did a