Search found 326 matches
- Sun Apr 12, 2009 1:37 pm
- Forum: General Discussion
- Topic: MOSFET Question
- Replies: 12
- Views: 4874
Re: MOSFET Question
Hello hmlittle welcome to the board. :D Let me hear back from you with any in-sight. thank I put a small page together with my findings. You can find it here. MOSFET LINK Bob is right and you need to be sure what need N or P channel... two different polarities. The above link has the following PNP M...
- Thu Apr 09, 2009 7:37 pm
- Forum: General Discussion
- Topic: MOSFET Question
- Replies: 12
- Views: 4874
Re: MOSFET Question
:D :D :D OK I see what I was missing. In the Spice Model there is a variable called Vto. I believe that deals w/ the threshold voltage. As I pick certain FETs with lower Vto's they don't work. I now feel comfortable buying some FETs now! Also, last time I looked SwitcherCAD had a pretty limited set ...
- Thu Apr 09, 2009 12:32 pm
- Forum: General Discussion
- Topic: MOSFET Question
- Replies: 12
- Views: 4874
MOSFET Question
Ok... I've been playing with some hardware the past few months and I'm shocked at how much I forgot just by doing firmware over the years. I need to run a 3.3V logic line to a P-Channel MOSFET. Its running to the gate and I have 5V at the Source. I will be drawing .08mA when active... I'm not switch...
- Fri Apr 03, 2009 3:48 am
- Forum: General Discussion
- Topic: "Counters" day coming soon...
- Replies: 10
- Views: 4772
Re: "Counters" day coming soon...
Incredible Mr Al!
I will be on a week long cruise celebrating my birthday on July 7th that week
If I have any brain cells left to remember 456789 I will be sure to cheers everyone!
-Tony
I will be on a week long cruise celebrating my birthday on July 7th that week
If I have any brain cells left to remember 456789 I will be sure to cheers everyone!
-Tony
- Sat Feb 28, 2009 6:13 am
- Forum: General Discussion
- Topic: quick logic level question
- Replies: 7
- Views: 3393
quick logic level question
I have 0 to 5 volt digital signal.
If I wanted to convert it to 0 to 3.3 volt...
Could I drop a diode in line to regulate it to 3.3?
The baud rate is 19200.
_____________
Tony
If I wanted to convert it to 0 to 3.3 volt...
Could I drop a diode in line to regulate it to 3.3?
The baud rate is 19200.
_____________
Tony
- Tue Jan 13, 2009 4:10 am
- Forum: General Discussion
- Topic: PC-based Logic Analyzers
- Replies: 5
- Views: 2592
PC-based Logic Analyzers
I'm in the market for a PC-based Logic Analyzer. I am googling right now and getting lots of hits. The interesting thing for me is that I dont need anything very fast. I would say in the rates of 9600. I am using the tool for its sampling capabilities. So it needs to store at least 8 bytes of data f...
- Mon Jan 05, 2009 5:50 pm
- Forum: Computer Programming
- Topic: Panasonic 3.5" Floppy Failures
- Replies: 5
- Views: 3044
- Mon Jan 05, 2009 4:27 am
- Forum: General Discussion
- Topic: RS232
- Replies: 12
- Views: 5154
Do you need full compliance?l Sure! I would like this box to work on any computer. Voltage levels- The RS-232 standard defines the voltage levels that correspond to logical one and logical zero levels. Valid signals are plus or minus 3 to 15 volts. The range near zero volts is not a valid RS-232 le...
- Fri Jan 02, 2009 10:16 am
- Forum: General Discussion
- Topic: RS232
- Replies: 12
- Views: 5154
This looks interesting... http://picprojects.org.uk/projects/simpleSIO/ssio.htm But it gets the negative supply for the RS232 transmit data [from the micro] from the serial RS232 receive data line[from the PC]. I am guessing for this to work the PC needs to transmit while it receives for this to work?
- Fri Jan 02, 2009 9:20 am
- Forum: General Discussion
- Topic: RS232
- Replies: 12
- Views: 5154
- Fri Jan 02, 2009 9:07 am
- Forum: General Discussion
- Topic: RS232
- Replies: 12
- Views: 5154
- Fri Jan 02, 2009 5:49 am
- Forum: General Discussion
- Topic: RS232
- Replies: 12
- Views: 5154
- Fri Jan 02, 2009 4:54 am
- Forum: General Discussion
- Topic: RS232
- Replies: 12
- Views: 5154
RS232
This might be a silly question... but does Maxim or any other IC company make a RS232 solution that can receive 5V logic and output 3.3V logic? I see Maxium has a wide variety of IC's that can run on 5V to 3.3V source, but how about the logic? I would like to make a box that would interface to a com...
- Sun Dec 14, 2008 8:00 am
- Forum: General Discussion
- Topic: 1.5V to 5V
- Replies: 23
- Views: 14472
Hello everyone. The circuit mentioned in this thread really sparked my interest. So much that I am running simulations with two tools and spent most of yesterday playing with different components in the circuit. I understand this topic was discussed in a previous thread but maybe someone here could ...
- Thu Dec 11, 2008 11:54 am
- Forum: General Discussion
- Topic: 1.5V to 5V
- Replies: 23
- Views: 14472