Search found 1277 matches

by Lenp
Sun Dec 03, 2006 6:28 am
Forum: Computer Programming
Topic: BASIC to PIC
Replies: 18
Views: 7965

Hey guys ... thanks.

Now that this thread seems to have slowed down some I'll sit back and consider the opinions before I proceed. I've been stuck on basic since forever and maybe this trick pony needs a few new acts!

Thanks for the info and views...

Len
by Lenp
Sat Dec 02, 2006 9:43 pm
Forum: General Discussion
Topic: BATTERY BOOM!
Replies: 43
Views: 10734

Chris,

You've said more than a mouthful and I do think that you've been into the mixture a bit! Now, THIS is the end of this thread...

Len

PS: Thanks Philba!
by Lenp
Sat Dec 02, 2006 7:05 am
Forum: General Discussion
Topic: BATTERY BOOM!
Replies: 43
Views: 10734

Chris I really hate to do this but here it goes: First, There is enough chest pounding about your accomplishments! I don't need to expound on the papers I may have collected, or the subjects I may have mastered. I Just address these issues with facts. You, however, have not supplied one fact to supp...
by Lenp
Fri Dec 01, 2006 8:47 pm
Forum: General Discussion
Topic: BATTERY BOOM!
Replies: 43
Views: 10734

Chris, What 'history' am I accused of fighting? Where are the bags for batteries sold? Are they supplied with the batteries? In our society if a battery were to explode and someone were injured because the manufacturer did not supply, or suggest that the battery be in a bag, the lawsuit would buy al...
by Lenp
Fri Dec 01, 2006 4:24 pm
Forum: General Discussion
Topic: BATTERY BOOM!
Replies: 43
Views: 10734

Regarding the plastic bag idea, well I don't think it would work. When you electrolyze water you get both hydrogen and oxygen. Check out http://en.wikipedia.org/wiki/Electrolysis_of_water for the details. If the atmospheric O2 was the problem how would it get into the top of the battery to mix with ...
by Lenp
Fri Dec 01, 2006 8:09 am
Forum: General Discussion
Topic: BATTERY BOOM!
Replies: 43
Views: 10734

Are the batteries getting hot during charge? If so there is definately a problem. Are they servicable, with caps or plugs, if not they may be dry and overheating! Normally, the battery cannot create a vacuum since there are vents for the gas. As for the storage, well that depends on the conditions. ...
by Lenp
Fri Dec 01, 2006 5:35 am
Forum: General Discussion
Topic: BATTERY BOOM!
Replies: 43
Views: 10734

BATTERY BOOM!

Modern 'maintenance free' wet cell batteries can be a time bomb! Over the past year I've seen several batteries explode with no obvious reason, but, closer investigation does indeed show what happens. As is well known, charging a wet cell battery causes an electrolyte loss as hydrogen and oxygen ga...
by Lenp
Wed Nov 29, 2006 3:26 am
Forum: Computer Programming
Topic: BASIC to PIC
Replies: 18
Views: 7965

OK, now there are two options, PIC Basic and XCSB basic. Are there advantages /disadvantages to either(disregarding the cost)? Which of the two is the closest to the PBasic I've been using. Do either run like PBasic, program/load/run all in the same setting or are they more involved. Can I still pro...
by Lenp
Tue Nov 28, 2006 7:48 pm
Forum: Computer Programming
Topic: BASIC to PIC
Replies: 18
Views: 7965

BASIC to PIC

Over the years I've learned to do some programming with the Parallax line and now want to migrate to PIC's. I want as short a learning curve as possible since it is not a life long need! Preferrably, some of my previous designs could be ported with mnimal rewrites to a comparable PIC. I'm old school...
by Lenp
Tue Nov 28, 2006 7:15 pm
Forum: Up For Grabs
Topic: .....
Replies: 1
Views: 2324

I might have the issue but will have to dig around. Let me know if you still need it.

Will the finished CD's be available?

Len
by Lenp
Tue Nov 28, 2006 7:09 pm
Forum: Up For Grabs
Topic: MC68HC11 Evaluation Kit! <<<GONE>>>
Replies: 2
Views: 2267

MC68HC11 Evaluation Kit! <<<GONE>>>

Sorry!

This item is in a new home.

Len
by Lenp
Tue Nov 28, 2006 6:21 pm
Forum: Up For Grabs
Topic: Slide Rules <ONE LEFT>
Replies: 7
Views: 4398

Slide rules up for grabs!

Sorry, I was behind the 8 ball for a while and didn't get back to the thread I started! What I have are Pickett student slide rules, still in original, but old boxes/packaging. I guess $5 will cover the mailing to anyplace in the USA It's first come, first serve Three are available so do it now. No!...
by Lenp
Sun Oct 29, 2006 11:12 am
Forum: General Discussion
Topic: Coil Question
Replies: 10
Views: 1958

Coil Question

We have repaired many switch mode ballasts for a medical fluorescent lighting system. There is a coil on these ballasts that often develops an open or shorted winding. It is a simple open bobbin unit that is quickly rewound. It is used to provide feedback to the oscillator (approx 200Khz) and it car...
by Lenp
Sun Oct 29, 2006 10:58 am
Forum: General Discussion
Topic: Diode Dilemma?
Replies: 5
Views: 1772

Diode Dilemma?

Here's a thinker's issue! There is a family of diodes, the 1N400X family that are commonly available as 1N4001 with a PIV of 50V to 1N4007 with a PIV of 1000V. In any given manufacturer's price listing all are the same (or nearly) the same price. The manufacturer usually lists all of them on the sam...
by Lenp
Thu Oct 26, 2006 8:48 pm
Forum: Up For Grabs
Topic: Slide Rules <ONE LEFT>
Replies: 7
Views: 4398

Slide Rules <ONE LEFT>

This month's issue has an article about Electronic Slide Rules. Hey, why bother when I have some new-in-box student slide rules waiting to be claimed. If you correctly tell me what the cf and df scales are used for, one is yours if you pay the modest shipping and packing cost! Only a few are availab...