Search found 3680 matches
- Fri Aug 31, 2007 8:36 pm
- Forum: General Discussion
- Topic: Power Latching IC
- Replies: 47
- Views: 47292
Good start Chris. This wasn’t endearing to me, but had he asked properly, I would have been glad to answer instead of ask him a higher question, one I was sure he hadn’t ever thought of. The SCR latches with very little effort, DC in one way will turn on the SCR, the reverse to the gate cancels...
- Fri Aug 31, 2007 6:23 pm
- Forum: General Discussion
- Topic: Is it me?
- Replies: 15
- Views: 13745
- Fri Aug 31, 2007 6:08 pm
- Forum: General Discussion
- Topic: A little earth ground humor
- Replies: 100
- Views: 205428
- Fri Aug 31, 2007 10:25 am
- Forum: General Discussion
- Topic: A little earth ground humor
- Replies: 100
- Views: 205428
- Fri Aug 31, 2007 9:21 am
- Forum: General Discussion
- Topic: Charging While Wall-Warting
- Replies: 45
- Views: 19101
Your post is not just about its header statement?...... If on and off were your only issue when you plug in the wall wart, a simple relay or SCR/ Triac will do that job. As to tapping off the main supply to make two other voltages, yes you can do that as well. You can also add in diodes or the resis...
- Fri Aug 31, 2007 9:09 am
- Forum: General Discussion
- Topic: A little earth ground humor
- Replies: 100
- Views: 205428
- Fri Aug 31, 2007 4:50 am
- Forum: General Discussion
- Topic: A little earth ground humor
- Replies: 100
- Views: 205428
- Wed Aug 29, 2007 9:35 pm
- Forum: General Discussion
- Topic: need schematic for whelen aircraft strobes
- Replies: 30
- Views: 21315
Your problem is in the gate section. Much like a transistor gate, the middle of the tube needs a jolt. [voltage] Usually around 400 volts, sends the tube into conduction of 4kv. [Flash] Yours seems to keeps the gate open and supplying some form of current to cause a discharge, most likely the SCR th...
- Wed Aug 29, 2007 9:26 pm
- Forum: General Discussion
- Topic: Popular Electronics Magazine
- Replies: 19
- Views: 13067
- Wed Aug 29, 2007 9:19 pm
- Forum: General Discussion
- Topic: Power Latching IC
- Replies: 47
- Views: 47292
You might prefer the P-channel FET solution. A SCR needs a certain minimum current to remain latched, which could be higher than the load current. Also, the voltage drop across the SCR is higher than a diode, probably in the 1 to 2 volt range, and may be unacceptable with a battery supply. 5 ma hol...
- Wed Aug 29, 2007 9:15 pm
- Forum: General Discussion
- Topic: A little earth ground humor
- Replies: 100
- Views: 205428
As usual, you try so hard to recover your lost body parts, your responses are just a joke. I have many books on many subjects, even ones written for you, like Radio Shack. When dealing with the ignorant or those who refuse to learn, you always keep your options open. Mimms, a laureate, a scholar, a ...
- Wed Aug 29, 2007 6:53 pm
- Forum: General Discussion
- Topic: Tuesday August 28
- Replies: 28
- Views: 14928
Im like you, last week they mentioned all sorts of things, but no actual times? Just the date of Tuesday. [Three pages of nothing] Also they mentioned two weeks ago about the meteor shower, but that was a dud. Only Three good rocks? Im sure If you were watching things every day, some where they said...
- Wed Aug 29, 2007 5:01 pm
- Forum: General Discussion
- Topic: Tuesday August 28
- Replies: 28
- Views: 14928
- Wed Aug 29, 2007 2:36 pm
- Forum: General Discussion
- Topic: Tuesday August 28
- Replies: 28
- Views: 14928
Seen one clique you have talked to them all. I just address Philba and I know your right there, one in the same. And you act like I only addressed one person, actually it was two but that didn’t include the talking clique. And with out going back and looking Im sure you tried to ask me a question ...
- Wed Aug 29, 2007 1:53 pm
- Forum: General Discussion
- Topic: Tuesday August 28
- Replies: 28
- Views: 14928
As I said, I already answered mine, more than once. Here is some light reading for you.... The efficiency of thin-film Si cells is even poorer than for wafer-thick Si cells. How to make the cells cheap (using thin films) but also nicely absorptive is an important goal. Scientists at the University o...