Hi all, Great group, wonderful resource :D I bought my K8000 a few days ago for a bargain price, and now have the small challenge of assembling it. I have not...
... From: "nick (diymp3)" <k8000@...> ... Don't burn your fingers :-). Follow the instructions exactly, in the right order. Be carefull with polarity of...
... they use the 4.7V for it because it's a common number (in R12 range) and it's just needed for a high and low signal so the difference need to be big enough...
... I actually still have a burn on the top (!) of my hand from solder falling onto it whilst playing with car audio... ... So, if I provide 5V to this via a...
... You do lose a safeguard this way. The circuit on transf02 is electrically independent from the circuit on transf01. Because the connection from primary to...
... Perhaps I'm misunderstanding the diagram, or misunderstanding the purpose of the zener. Either of which are highly likely as I'm very green when it comes...
i was a little to fast with my reply, i have taken a look at the pic now, and the 6V transfo is offcourse used in front of the zener. maybe you kan replace it...
... There could also be a other problem. The k8000 is designed for mains 220 volt. On the mains 220 volt net are always little voltage peeks. The k8000 is...
Thanks for the clarification - so does a Zener do what I described? Cor, I'm learning, but it's a sloooow process! ... But my car supply is 12v DC, so a...
... Yes. And this could blow up you computer. But you can choose to take this risk :-) The peeks on the powersupply worry me maybe more. You wouldn't want to...
You can use a 5 volt regulator on the 6 volt line however the voltage must be 4.7 volts for the circut to work properly. And the opto isolators protect the ...
PCB123 is also a great freeware that has many features and online board ordering at 50% off. ... __________________________________ Do you Yahoo!? Yahoo!...
... True, but I'll be regulating the 12v line, and regulating 2 5v lines, so there'll be no peaks/troughs coming from the PSU - the board will be protected by...
... you could convert it to a wave with a velleman kit http://www.velleman.be/common/product.Aspx?id=9143 for more info ;) then you got the 220 for your K8000...
... Thanks Neils. I've actually got a 240V inverter, but I'm trying to avoid using it if possible as it strikes me as terribly inefficient to convert 12v DC...
Hi, Do you plan on using a video card or a serial port during debugging etc.? In that case you also need a -5V and a -12V. For powering the serial port you...
... Yup, I'm using VGA and 3 serial ports ;) ... I'm running a secondary small battery that's protected from negative voltages by a rather large diode. After...
... A zener is, in the way it is used on the k8000, a nice cheap solution. But in your case, with bigger voltage differences and bigger current, you could...
Well, I've just assembled the board, and it works perfectly! To say I'm surprised is an understatement! This is the first Velleman kit I've tried, the rest of...
Please treat me as someone who doesn't have a clue what he is doing. Maybe if I am treated as an idiot, something will click! I gave up on the W98 machine, as...
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Jukka Piepponen
jukka.piepponen@...
Jun 4, 2003 6:55 am
... Kjehhhhaaahhhahaha :) True, I have lived situation when there's "only" 1 or 2 ic's missing. I guess I was pissed a little that time :))) (Above sentence...
Hi all, When I try to dim a LED with a DAC port its works fine, but when I connect a light the light doesn't work. When I test the light with the +5V on the...
1776
Richard Schaper
richard@...
Jun 4, 2003 11:21 am
... The DAC can't provide the current for the light, a led only use 5 to 25 mA the DAC can provide upto 30mA or so (see documentation). so you need to amplify...
As I understand it, the outputs of the K8000 can at a maximum control a current of 20 V / 40 mA, whicht is 20V/0,04 Ampere. I am considdering assembling a...
... Look at: PowerIOchannel-1.png in http://groups.yahoo.com/group/k8000/files/Hardware/PowerIOchannel-1.png This is a simple circuit with which you can switch...
1779
k8000@yahoogroups.com
Jun 4, 2003 7:40 pm
Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the k8000 group. File :...
