Search found 105 matches
- Wed Jan 28, 2009 11:56 am
- Forum: General Discussion
- Topic: same I but different V
- Replies: 11
- Views: 3937
- Wed Jan 28, 2009 10:23 am
- Forum: General Discussion
- Topic: same I but different V
- Replies: 11
- Views: 3937
- Wed Jan 28, 2009 6:41 am
- Forum: General Discussion
- Topic: same I but different V
- Replies: 11
- Views: 3937
For Bob, is it OK to verify what I might know? Also, I got into software engineering and so haven’t done any EET for quite a time. That is why I kind of making sure I am not doing something I should not do. I might have more similar questions just to make sure I destroy the least of what I make! O...
- Tue Jan 27, 2009 5:59 pm
- Forum: General Discussion
- Topic: same I but different V
- Replies: 11
- Views: 3937
same I but different V
Hi,
If I got LEDs in series of different V (3V,3V,3V,2V,2V) values but same I (500mA) will they get the same current through?
Thanks.
If I got LEDs in series of different V (3V,3V,3V,2V,2V) values but same I (500mA) will they get the same current through?
Thanks.
- Thu Jan 15, 2009 7:05 am
- Forum: Computer Programming
- Topic: QTLP690C-Y - what data is that?
- Replies: 2
- Views: 2563
The issue here is this: To create another component in LTspice is nothing complex and one can create as many as he wants BUT the new component needs to be identified by its values that relate to the new component. If I create new component I need to make sure that it behaves to its specifications an...
- Wed Jan 14, 2009 6:17 pm
- Forum: Computer Programming
- Topic: QTLP690C-Y - what data is that?
- Replies: 2
- Views: 2563
QTLP690C-Y - what data is that?
I pulled out this data from LTspice \lib\cmp\standard.dio. Would someone know what the values below represent! .model QTLP690C D(Is=1e-22 Rs=6 N=1.5 Cjo=50p Iave=160m Vpk=5 mfg=Fairchild type=LED) QTLP690C-Y.pdf = data sheet .model QTLP690C D( Is=1e-22 = ? Rs=6 = ? N=1.5 = ? Cjo=50p = ? Iave=160m = ...
- Wed Jan 14, 2009 10:46 am
- Forum: Computer Programming
- Topic: *.lib and *.olb into spice, how?
- Replies: 6
- Views: 9734
- Wed Jan 14, 2009 7:37 am
- Forum: Computer Programming
- Topic: *.lib and *.olb into spice, how?
- Replies: 6
- Views: 9734
*.lib and *.olb into spice, how?
I downloaded some Pspice files with these extensions: *.lib and *.olb!? How do I get them imported into LTspice?
Would someone have any idea what to do with them?
Thanks.
Would someone have any idea what to do with them?
Thanks.
- Wed Jan 14, 2009 7:08 am
- Forum: Projects & Kits
- Topic: digital circuit pg-46
- Replies: 15
- Views: 10312
- Tue Jan 13, 2009 4:44 pm
- Forum: Projects & Kits
- Topic: digital circuit pg-46
- Replies: 15
- Views: 10312
- Tue Jan 13, 2009 12:05 pm
- Forum: Projects & Kits
- Topic: digital circuit pg-46
- Replies: 15
- Views: 10312
Too bad I did not know what other circuits you might present and so I do not have the Schotky NANDs and MOSFETs so that will have to wait a bit until I get those. When I got the parts for the project there were no CD4093, Cap 1uF, and transistor 2N700 as it shows in the parts list in the January is...
- Tue Jan 13, 2009 6:02 am
- Forum: Projects & Kits
- Topic: digital circuit pg-46
- Replies: 15
- Views: 10312
Yes, it works now. At first I thought it might be the resistance that I got, the 2 100Kohm might cause the issue since I had to put some R in series getting 90K and 94K since I did not have any 100Ks but it should handle some tolerance for my purpose. Too bad I did not know what other circuits you m...
- Mon Jan 12, 2009 6:49 pm
- Forum: Projects & Kits
- Topic: digital circuit pg-46
- Replies: 15
- Views: 10312
- Mon Jan 12, 2009 6:38 pm
- Forum: Projects & Kits
- Topic: digital circuit pg-46
- Replies: 15
- Views: 10312
I found the problem. It is the PCB trace layout that involves the jumper part. Instead the jumper going from S3-j to S4-j it jumps directly to S4. I hope this description helps or if you accept JPG or GIF image I can send you that. :eek: I can retrace that, luckily it is at the bottom so no one will...
- Mon Jan 12, 2009 7:40 am
- Forum: Projects & Kits
- Topic: digital circuit pg-46
- Replies: 15
- Views: 10312
digital circuit pg-46
I built the Digital Circuit, figure 11 on pg-46 but SET and RESET! One LED stays on while the other comes on at the push of button but that’s it!? What am I missing?
Thanks.
Thanks.