Electronics Forum / Components / October 2006

need LED resistor help
http://i13.photobucket.com/albums/a...oduude/LEDs.jpg
the red ones in the photo are like 3mm and the rest yellow and green
seem to be a tiny 1mm?

one big help plz
where can i find 10 pieces of DS18B20 sensor for teh cheapset price?
thanks

I'm looking for information (preferably datasheets) for the two General
semiconductor devices: AY-1-5050P & AY-1-2020P.
I know the 5050 is a 7 stage counter but I have no idea what the 2020 is
and I haven't been able to find any reference to it. I was given the info

We're trying to find an equivalent for an old motorola, but I can't
find any data on the original.  It is out of a power supply of a Micro
Balancer, model MU6-t, made by Micro Balanicin Inc, the power supply
itself is made by Elasco, a division of Sigma Instruements, nodel no

I recently installed a temperature monitoring system for my home workshop.
The primary goal is to monitor the heat capacity and dissipation of a
concrete slab floor with radiant heat tubing.  When I installed the heating
tubes before the concrete was poured, I embedded a fairly ...

I have 32 ULN2003A chips - brand new
I will take payment in US Dollars via legitimate money
order or US postal money order.
Sorry, I am not selling outside of America.

I need a 7 pin mini-DIN plug as a replacement for one on the foot pedal of a
dictation machine.
Does anyone know of any suppliers in the UK who can help me?
Thanks in advance

According to Art of Electronics, there are prefab Twin-T based
notch filters available from 1 Hz to 50 kHz. Anybody know who
supplies/manufactures these?
Thanks,

    I am looking for both an integrated (IC) powerline
modem and an integrated comunication "error controller".
I need the second device because I've heard someone
saying about the powerline which it might be full of noise

It would be great if we could replace Magic Eye tubes with LCDs with
backlights. Any thoughts on this?

I'm looking for a relay able to switch a 100 MHz Ethernet line. I need it
because I have an ethernet switch chip (3 ports: IN, OUT, INTERNAL) on every
board (all are daisy chained), in case one board is turned off the daisy
chain line must not be interrupted and the relay without ...

I'd like to build a morse transmitter/receiver for educational purposes
for the kids. Has anyone any ideas about where i could get buy such
stuff? Range isn't important. Also are there any regulations to consider?

I wonder if anybody could point me towards a simple multi-output PSU which
can be run from a cars' ~12 - 14v supply?
I intend to run three devices. A small digital video recorder which requires
5vDC @1A, a CMOS camera which requires 12vDC @1A, and another camera which

I was wondering if anyone might know how to disable the cold junction
reference on a Watlow 93 temperature controller.
I would like to use the controller to control the differential
temperature in a heating system.

We have an old design using MAX472 ic's from Maxim. The problem
is that this ic is not easy to find these days, and we have several
pcb's already fabricated where we use this ic.
So the question is: does anyone know of an equivalent part to the