Search found 27 matches

by bearing01
Thu Jul 06, 2006 12:51 pm
Forum: General Discussion
Topic: another capacitor question???
Replies: 50
Views: 13600

I don't work with motors often... it's been a while... but here's what I remember: The rotor inside an AC motor likes to see a rotating magnetic field to get it to start spinning and to keep it spinning. Think of it as a magnetic field that is spinning around the rotor. The magnetic field induces a ...
by bearing01
Thu Jul 06, 2006 12:06 pm
Forum: General Discussion
Topic: capacitors???
Replies: 6
Views: 1945

There are meters out there that can test capacitors. One of the cheap hand-held multimeters I have allows you to plug in the cap and it shows the value on the display. I guess you could make one of these if you researched it. Another way to test a cap to see if it has failed is by using a multimeter...
by bearing01
Sun Jun 25, 2006 4:12 pm
Forum: General Discussion
Topic: Have you used VELLEMAN HPS10 Digital O-scope?
Replies: 4
Views: 1475

It also says it has memory length like 256 Bytes. What the hell is that? Sounds like if you're sampling at 1kS/s you would collect samples for 256ms. That is, you could see 1 period of a 3.9Hz waveform. I wrote this and didn't think about it. After I left the computer I realized that 3.9Hz is the s...
by bearing01
Sun Jun 25, 2006 10:16 am
Forum: General Discussion
Topic: Have you used VELLEMAN HPS10 Digital O-scope?
Replies: 4
Views: 1475

Sorry for not posting the specs. When I made this post I didn't have time to go into more detail. http://www.designnotes.com/downloads/Oscilloscopes_Cross_Reference.pdf http://www.designnotes.com/downloads/Manual_HPS40_10-UK.pdf It says max sample rate is 10MS/s and max bandwidth is 2MHz. Therefore,...
by bearing01
Sat Jun 24, 2006 2:50 pm
Forum: General Discussion
Topic: Have you used VELLEMAN HPS10 Digital O-scope?
Replies: 4
Views: 1475

Have you used VELLEMAN HPS10 Digital O-scope?

Hi,
The above mentioned scope is a hand held.

http://www.mbelectronics.com/view.aspx? ... 20HPS10-SE

I am thinking about buying it but before I do I was wondering if anyone out there has used it before. Is this product any good?
by bearing01
Fri Jun 23, 2006 7:48 am
Forum: Computer Programming
Topic: How to get started with STAMP's and Microcontrollers ?
Replies: 14
Views: 6346

Great web pages. Thanks. Sounds to me (if I want to spend some $ to get up & running quick) to buy the ICD with ZIF and if there's limitations in programming the chips I want then just build myself a JDM. Also, it seems some chips can be re-programmed in-circuit when it has bootloader capability. In...
by bearing01
Thu Jun 22, 2006 11:06 pm
Forum: Computer Programming
Topic: How to get started with STAMP's and Microcontrollers ?
Replies: 14
Views: 6346

What's the difference between a PIC JDM programmer and a PIC ICD2 In circuit debugger? It seems the ICD can also program the chip. But I was looking at the ICD-2 on ebay (a knockoff) and could not see how the ICD board could hook up to the circuit under test. When I did this stuff years ago I used a...
by bearing01
Thu Jun 22, 2006 8:03 am
Forum: Computer Programming
Topic: How to get started with STAMP's and Microcontrollers ?
Replies: 14
Views: 6346

After doing some reading from the links you guys provided, stamp's are not what I thought they were. It seems to be a PCB with some basic stuff like voltage regulator, xstal oscillator, etc... built up for you and has a flash PIC and they can be pretty pricy! Also, the programming seems to be a form...
by bearing01
Wed Jun 21, 2006 9:09 pm
Forum: General Discussion
Topic: Note on spam topics
Replies: 13
Views: 3489

Don't we have a moderator that can delete spam posts?
by bearing01
Wed Jun 21, 2006 9:07 pm
Forum: General Discussion
Topic: PIC PRogrammer Recommendation
Replies: 6
Views: 1702

philba wrote:for about $20 you can build one.
Do you happen to know a webpage / schematic source on how to do this?
by bearing01
Wed Jun 21, 2006 10:09 am
Forum: General Discussion
Topic: How to get started with STAMP's and Microcontrollers ?
Replies: 2
Views: 1727

How to get started with STAMP's and Microcontrollers ?

Hi All, I'm new to the board, but have been designing electronics for years. I'm also a subscriber to Nuts & Volts. Many years ago I did a project where I programmed a PIC16C63 Microcontroller. At the company we had a "PRO MATE" Chip programmer and we also had a development board - In circuit Debugg...