Search found 71 matches

by rosborne
Thu Jul 17, 2003 6:44 pm
Forum: General Discussion
Topic: Laplace Transform Question
Replies: 5
Views: 1448

Re: Laplace Transform Question

Wow, that didn't come out the way I expected, sorry about that. Jeez, that's big, but at least it's somewhat readable.
-rick
by rosborne
Thu Jul 17, 2003 6:41 pm
Forum: General Discussion
Topic: Laplace Transform Question
Replies: 5
Views: 1448

Re: Laplace Transform Question

Another method using the definition of the unilateral Laplace Transform isImage I've been trying to figure out how to post this so, sorry if it is no longer topical.
-Rick
by rosborne
Thu Jul 03, 2003 5:24 pm
Forum: Computer Programming
Topic: C question
Replies: 9
Views: 3520

Re: C question

Makes sense now, thanks. I just didn't expect a shift operator used to define a constant so I assumed it was something special. It was the only one out of about 30 lines of #define that was done that way. Not the way I'd have done it, but I'm just a hack. Thanks much, probably post more ?s next week...
by rosborne
Thu Jul 03, 2003 2:49 pm
Forum: Computer Programming
Topic: C question
Replies: 9
Views: 3520

Re: C question

Ok that makes sense, I still think it is a weird way to define a constant. It threw me.
Rick
by rosborne
Thu Jul 03, 2003 1:16 pm
Forum: Computer Programming
Topic: C question
Replies: 9
Views: 3520

C question

What does this mean?<p>#define ERR (1<<15)<p>specifically the (1<<15) part.<p>Rick
by rosborne
Thu Jun 26, 2003 1:57 pm
Forum: General Discussion
Topic: Electronics Simulation Software
Replies: 21
Views: 6110

Re: Electronics Simulation Software

ICAPS/4 DEMO by Intusoft is a really nice package for simulation. I used it for an Op-Amp design contest in a class (we lost). Probably had about 90 nodes, but only works with that many wires if you use the hierarchical blocks function.-Rick
by rosborne
Tue Jun 24, 2003 1:41 pm
Forum: General Discussion
Topic: Smiling So Hard my Face is gonna Break
Replies: 10
Views: 2266

Re: Smiling So Hard my Face is gonna Break

Fantastic. Congrats. :cool:
by rosborne
Tue Jun 24, 2003 1:21 pm
Forum: General Discussion
Topic: MOSFET vs. Transistor
Replies: 21
Views: 3448

Re: MOSFET vs. Transistor

Transformers only work with AC. The voltage in an inductor is defined by a first order differential equation as L*di/dt. Conceptually, the voltage across an inductor is equal to the inductance (which is defined my the material and it's geometry) times the change in current over the change in time. W...
by rosborne
Tue Jun 24, 2003 6:45 am
Forum: General Discussion
Topic: Address latching on Intel 8088
Replies: 2
Views: 673

Re: Address latching on Intel 8088

OK, but the followup questionis why?
-Rick
by rosborne
Tue Jun 24, 2003 6:42 am
Forum: General Discussion
Topic: MOSFET vs. Transistor
Replies: 21
Views: 3448

Re: MOSFET vs. Transistor

Power Mosfets could be used as Voltage Amplifiers, but the primary usage as I understand it is to control (switch) current. MOSFETs make excellent switches allowing for interesting things like pulse width modulation or PWM. The MOSFET can be switched on and off rapidly to produce a speed controller ...
by rosborne
Mon Jun 23, 2003 11:50 am
Forum: General Discussion
Topic: Address latching on Intel 8088
Replies: 2
Views: 673

Address latching on Intel 8088

I am building an embedded controller using 74xxx chips as decoders, latches, logic, etc. The 8088 has 20 address lines. AD0-AD7 and A16-A19 are multiplexed and definitely require latching. Do the remaining A8-A16 require latching? Based on the timing diagram given in the spec, I think not, but my sy...