I think I shd have used a different icon.
The power ic no is 7805(just that), it seems to have just 3 pins, one is 9v, the other is 5v, and 3 is common. The display driver is LM3914, I think it's used for a dot/bar display, cos it has output lines connected to leds.
Search found 9 matches
- Wed Jul 21, 2004 8:40 am
- Forum: General Discussion
- Topic: pc based oscilloscope again
- Replies: 1
- Views: 1682
- Tue Jul 20, 2004 6:39 am
- Forum: General Discussion
- Topic: Temperature controlled home brew
- Replies: 18
- Views: 7961
Re: Temperature controlled home brew
its just that u don't know much about electronics, but u could get someone to build a circuit for u if u find one that suits you. Check out imagineeringezine.com, I think they have a sampling of circuits.
- Tue Jul 20, 2004 6:16 am
- Forum: General Discussion
- Topic: pc based oscilloscope again
- Replies: 1
- Views: 1682
pc based oscilloscope again
I've got a circuit diag now. But i want 2 modify it a bit.I found an Ic , a display driver whose only purpose is just to signal when voltage level changes polarity. I thought of replacing it with something else, maybe an opamp,or voltage comparator. What d'u think? Also, there's another ic (7402 I t...
- Tue Jul 20, 2004 4:30 am
- Forum: General Discussion
- Topic: Moisture Sensor
- Replies: 9
- Views: 4282
Re: Moisture Sensor
<blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr>Originally posted by Bob Scott: I think you just need a square of poster cardboard normally held up by a spring, but held down by a small piece of TP. If it rains the TP gets wet and weak and breaks...
- Tue Jul 20, 2004 4:18 am
- Forum: General Discussion
- Topic: OPNIONS WANTED sounds too good to be true
- Replies: 80
- Views: 39341
Re: OPNIONS WANTED sounds too good to be true
<blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr>Originally posted by High4Volts: it still all boils down to the old rule. You can only convert it, not make it or destroy it. But you gotta love it none the less. :p <hr></blockquote><p>thats right,...
- Mon Jul 05, 2004 9:29 am
- Forum: General Discussion
- Topic: unidentifiable ICs
- Replies: 6
- Views: 2875
unidentifiable ICs
I've got some ICs that I cannot identify,and I can't seem to be able to find datasheets for them. They include motorola, toshiba, rca, zilog products among others. Can anyone help me find a datasheet(s) 2 identify them.
PS> I think they're obsolete components 'cos I found a Z80 cpu among the lot.
PS> I think they're obsolete components 'cos I found a Z80 cpu among the lot.
- Mon Jun 21, 2004 3:28 am
- Forum: General Discussion
- Topic: school project needs help
- Replies: 7
- Views: 4014
Re: school project needs help
<blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr>Originally posted by Equinox2355: Well I think I found a resource that will help you. this is a circuit and it even has C code for displaying what you need. I hope this helps.<p> http://www.electron...
- Mon Jun 21, 2004 3:26 am
- Forum: General Discussion
- Topic: school project needs help
- Replies: 7
- Views: 4014
Re: school project needs help
<blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr>Originally posted by Equinox2355: Well I think I found a resource that will help you. this is a circuit and it even has C code for displaying what you need. I hope this helps.<p> http://www.electron...
- Fri Jun 18, 2004 8:01 pm
- Forum: General Discussion
- Topic: school project needs help
- Replies: 7
- Views: 4014
school project needs help
Hi ev'ryone. I'm designing (or I'm supposed 2 design a pc-based oscilloscope) ie one that can take a signal, process it and feed it 2 a pc for display. My problem is that I don't really have any ideas as to how 2 go about it. I thought of using an ADC in a circuit, but I can't figure out how 2 build...