Search found 2856 matches

by haklesup
Wed Feb 18, 2004 2:41 pm
Forum: General Discussion
Topic: need chip ID
Replies: 7
Views: 1458

Re: need chip ID

Excese my ignorance, but why is it called a "Jungle" IC. Does it have a more technical sounding name I might see in a listing of parts?
by haklesup
Fri Feb 13, 2004 2:11 pm
Forum: General Discussion
Topic: lightning strike
Replies: 13
Views: 2299

Re: lightning strike

Given that you'll be using the shelter during a storm when lightning is likely, grounding the pipe to a ground spike is worthwhile even if it is not absolutely necessary. <p>Assuming the stove is bolted to the pad and the cement is in intimate contact with the earth, it could provide an adequate gro...
by haklesup
Fri Feb 06, 2004 2:29 pm
Forum: General Discussion
Topic: digital speedometer
Replies: 16
Views: 3215

Re: digital speedometer

"Unfortunately when the vehicle is stood still and you accelerate the speedometer registers a value. I have no idea what this means,"<p>I interpret this to mean that the display registering a speed when the vehicle is in neutral but you are reving the engine.<p>I might guess that you have put the se...
by haklesup
Wed Feb 04, 2004 4:09 pm
Forum: General Discussion
Topic: MY FRIENDS SAY I AIN'T RIGHT
Replies: 13
Views: 2585

Re: MY FRIENDS SAY I AIN'T RIGHT

Sounds like your a couple months early for an April Fools joke. I always enjoyed that article in the now defunct Radio Electronics in the April edition (for a few years anyway). My favorite was the Macrowave oven which purported to make food colder by emitting longer microwaves. Apparently some read...
by haklesup
Thu Oct 02, 2003 4:09 pm
Forum: General Discussion
Topic: RPM regulation
Replies: 55
Views: 11579

Re: RPM regulation

There is another although less efficient way to regulate the output. That is to let the RPM of the generator vary and feed the AC output into a rectifier then back into an inverter (AC-DC-AC converter). This basic scheme is used by wind turbines. If you get a good inverter (off the shelf) then the v...
by haklesup
Thu Oct 02, 2003 11:34 am
Forum: General Discussion
Topic: Converting Ivex .BRD files to DXF
Replies: 3
Views: 741

Re: Converting Ivex .BRD files to DXF

I don't know about Ivex but generally speaking PCB CAD files are not portable. Unless the program that made the BRD file has a DXF export command, you probably won't find one from a third party.<p>When it comes to PCB layout. It appears that only the netlist files are easily importable. Libraries, p...
by haklesup
Thu Oct 02, 2003 11:27 am
Forum: General Discussion
Topic: RPM regulation
Replies: 55
Views: 11579

Re: RPM regulation

I assume that your generator must maintain input revs at 1800RPM so that the output will be 60Hz. A change in speed means a shift in output frequency (depending on the load this may be tolerable within a narrow range).<p>When the load increases, the torque required to spin the generator increases an...
by haklesup
Fri Sep 26, 2003 3:57 pm
Forum: General Discussion
Topic: Used test equipment in New Orleans area
Replies: 3
Views: 982

Re: Used test equipment in New Orleans area

New orleans is not the first place I think of when asked about high tech or electronics. In fact it may be among the worst places to look given its tourist status. However, if your looking for cooking tips or a BBQ recipe, your going to the right place<p>In any case, I turned up a few places. Go to ...
by haklesup
Thu Sep 25, 2003 1:26 pm
Forum: General Discussion
Topic: Chip reference
Replies: 2
Views: 723

Re: Chip reference

try<p>www.icmaster.com<p>click on the "Logo Finder" link at the top.
You will have to register (free) to use most of their search features.
by haklesup
Thu Sep 25, 2003 12:43 pm
Forum: General Discussion
Topic: physics ?
Replies: 21
Views: 4055

Re: physics ?

Acording to the State Phase Diagram for Water Liquid water does indeed not exist when the pressure is 0. see the lower left corner of the diagram.
by haklesup
Thu Sep 25, 2003 12:31 pm
Forum: General Discussion
Topic: Need to hire engineer to design blowdryer
Replies: 14
Views: 2585

Re: Need to hire engineer to design blowdryer

All comments about patents aside, you need a mechanical engineer. Someone who is experienced with fluid flow and heat transfer as well as industrial contreol systems. An electrical engineer and test equipment designer like myself may have some notion as to where to start but the physics are in a dif...
by haklesup
Tue Sep 23, 2003 11:42 am
Forum: General Discussion
Topic: physics ?
Replies: 21
Views: 4055

Re: physics ?

As stated your question cannot be completely answered. We need to know the properties of the chamber. <p>Form a Physics point of view (and yes I did look at a book) Heat is transfered by means of either Conduction, Convection or Radiation. Furthermore, heat always flows from high temp to low (thats ...
by haklesup
Mon Sep 22, 2003 6:29 pm
Forum: General Discussion
Topic: Wind turbine controller
Replies: 1
Views: 731

Re: Wind turbine controller

Try this link, it seems more focused to your question. Yahoo Group for alternative energy <p>It dosen't seem to me that you would be able to get such a specific module from anyone but the original manufacturer. I couldn't find a direct link easily. Is this equipment obsolete.<p>Large wind farms who ...
by haklesup
Mon Sep 22, 2003 6:02 pm
Forum: General Discussion
Topic: How
Replies: 1
Views: 857

Re: How

The chest strap has two rubber pads that are actually electrically conducting electrodes. You need this material to be moist to make good contact to your skin. <p>In any case, once you press the chest piece to your skin, a small current (you cannot feel it) is put through your skin from one electrod...
by haklesup
Mon Sep 22, 2003 5:31 pm
Forum: General Discussion
Topic: device 74HC595
Replies: 5
Views: 1312

Re: device 74HC595

Either the ST parts are more sensitive to noise than normal or the TI parts were particularly robust (masking a pre-existing problem). I am presuming it is noise triggered because it is intermittant with no obvious trigger to make it happen. Does this happen at high temperature or ambient room temp....