Search found 16 matches
- Wed Dec 17, 2008 11:06 am
- Forum: Computer Programming
- Topic: Microsoft Outlook
- Replies: 3
- Views: 7387
Microsoft Outlook
Are any of you Outlook 2007 gurus? I have had this problem happen before but I cannot find the solution I found before. What is happening is this. I customize the view by grouping by categories in an all collapse. When I click out of inbox and go back, the defaults have reapplied. I remember the “...
- Thu Oct 30, 2008 1:30 pm
- Forum: General Discussion
- Topic: Redesign RF Generator
- Replies: 4
- Views: 2929
- Wed Oct 15, 2008 3:28 pm
- Forum: General Discussion
- Topic: B&K 467 CRT Tester & Restorer.....
- Replies: 11
- Views: 5146
I worked fine for me. Here it is long hand.
http://cgi.ebay.com/B-K-467-CRT-Tester- ... 286.c0.m14
Try a copy /paste
http://cgi.ebay.com/B-K-467-CRT-Tester- ... 286.c0.m14
Try a copy /paste
- Fri Aug 15, 2008 2:21 pm
- Forum: General Discussion
- Topic: 5A Constant Voltage/Constant Current Regulator
- Replies: 16
- Views: 10562
The ciruit worked but took about 5 minutes to charge the caps. Also, I first connected my voltmeter to the load connections to see the range. My full range was 14vdc-17vdc. I really need the range to be 6vdc-20vdc. I didnt know what size transistor to use and since I had a 2N4401. I use it. R22 is a...
- Thu Aug 14, 2008 6:06 am
- Forum: General Discussion
- Topic: 5A Constant Voltage/Constant Current Regulator
- Replies: 16
- Views: 10562
- Wed Aug 13, 2008 7:36 am
- Forum: General Discussion
- Topic: 5A Constant Voltage/Constant Current Regulator
- Replies: 16
- Views: 10562
If there is a much simpler way then I am not married to this circuit. The bottom line is I need to have a way to charge the 2 two farad capacitors at voltages ranging from @ 6vdc-@20vdc. The only purpose of me wanting to control the current is to protect both of my circuits. (one the power supply, t...
- Wed Aug 13, 2008 6:12 am
- Forum: General Discussion
- Topic: 5A Constant Voltage/Constant Current Regulator
- Replies: 16
- Views: 10562
Hello, What is the needed max output voltage for this app? 24vdc is the max surge rating for the caps. I was going to max the output at 20vdc. I would like to make sure of something. I connect pin 7 to input source which is 28vdc. Can I connect pin 4 to -12vdc? I have another power supply that I can...
- Tue Aug 12, 2008 7:13 am
- Forum: General Discussion
- Topic: 5A Constant Voltage/Constant Current Regulator
- Replies: 16
- Views: 10562
Let me start from the beginning because I don’t think I have given enough information to adequately inform you on how to help. Sorry. I am building a capacitor welder. I am using 2 two farad capacitors and an SCR to do the work. I have been charging the caps using a Tenma laboratory DC power suppl...
- Mon Aug 11, 2008 2:20 pm
- Forum: General Discussion
- Topic: 5A Constant Voltage/Constant Current Regulator
- Replies: 16
- Views: 10562
Thank you both for your reply's. I hooked up a DC motor and adjusted the current limiting pot from full resistance to no resistance but had no change. The reason the current limiting pot is important to me is to protect the power supply not the rest of the circuit. I am charging 2 two farad caps and...
- Mon Aug 11, 2008 8:01 am
- Forum: General Discussion
- Topic: 5A Constant Voltage/Constant Current Regulator
- Replies: 16
- Views: 10562
5A Constant Voltage/Constant Current Regulator
Thank you for reading this post. I have built the charging circuit below on a breadboard and have tested the voltage adjustment and it works great. I can not figure out how to test the current side. So, my two questions are these. How can I test the current adjustment and how does this circuit adjus...
- Wed Jul 02, 2008 10:42 pm
- Forum: General Discussion
- Topic: Variable regulating power supply circuit
- Replies: 10
- Views: 5433
- Tue Jul 01, 2008 7:51 am
- Forum: General Discussion
- Topic: Variable regulating power supply circuit
- Replies: 10
- Views: 5433
Its frequency of use will vary. Sometimes we will be welding 8 AA batteries together which equates to around 16 discharges. This is of course provided we got a good tack. If not then that number will increase. After that the unit may sit around for a couple of day before we need to use it again. At ...
- Tue Jul 01, 2008 7:33 am
- Forum: General Discussion
- Topic: Variable regulating power supply circuit
- Replies: 10
- Views: 5433
Thank you for the responses. Since I don’t know how to draw out a schematic that can be uploaded to this listing I am going to attempt to spell it out. I have two 2farad car audio capacitors connected in parallel. I connected a large stud type SCR from one side of the cap to a copper pencil electr...
- Mon Jun 30, 2008 5:36 pm
- Forum: General Discussion
- Topic: Variable regulating power supply circuit
- Replies: 10
- Views: 5433
- Mon Jun 30, 2008 2:25 pm
- Forum: General Discussion
- Topic: Variable regulating power supply circuit
- Replies: 10
- Views: 5433
Variable regulating power supply circuit
Hello, I need to build an adjustable regulating power supply circuit. I currently have a Power One 28VDC 3.6A power supply. I need to build a regulating circuit for the output that maxes at 24VDC and has a minimum output of 6VDC. I figure the Power One will regulate the current so I am not concerned...