Search found 472 matches

by SETEC_Astronomy
Wed Apr 14, 2010 9:01 pm
Forum: General Discussion
Topic: Need some non-volatile memory
Replies: 5
Views: 1003

Re: Need some non-volatile memory

Unless this project is an exercise of theory I do think it's a bit insane. I can't blame you though, I've been there, I've definitely been there. I would get determined to complete a project my way no matter the complexity or expense. That being said is this for a real world project? Are you willing...
by SETEC_Astronomy
Wed Apr 14, 2010 6:48 pm
Forum: General Discussion
Topic: Summer Starts And So Does The HVAC Trouble
Replies: 25
Views: 4654

Re: Summer Starts And So Does The HVAC Trouble

Today the decision maker of the home opted to have a professional out, one we've known for almost 20yrs. According to him the compressor has been in trouble for years. Our particular unit didn't come with a start kit, someone added it when the compressor would no longer start reliably. The compresso...
by SETEC_Astronomy
Tue Apr 13, 2010 5:08 pm
Forum: General Discussion
Topic: Summer Starts And So Does The HVAC Trouble
Replies: 25
Views: 4654

Re: Summer Starts And So Does The HVAC Trouble

I was a bit discouraged after taking the winding measurements but I re-read this Your lowest reading is between the "C" and "R" terminals, a few ohms (give or take) is about right. Your next reading between "C" and "S" should be a little bit higher than the previous. Your highest reading will be bet...
by SETEC_Astronomy
Mon Apr 12, 2010 4:36 pm
Forum: General Discussion
Topic: Summer Starts And So Does The HVAC Trouble
Replies: 25
Views: 4654

Re: Summer Starts And So Does The HVAC Trouble

Before I replaced the start capacitor it only hummed, it now runs/starts for a few seconds and shuts off. I don't have a hefty enough ammeter for a direct test and don't own a clamp meter. I could however try to whip up an adapter for my DMM with the help of online schematics. I'll test the windings...
by SETEC_Astronomy
Mon Apr 12, 2010 4:13 pm
Forum: General Discussion
Topic: Summer Starts And So Does The HVAC Trouble
Replies: 25
Views: 4654

Re: Summer Starts And So Does The HVAC Trouble

Well, I got the new resistor and capacitor installed. Now the compressor runs for those few seconds and then turns off. It's not looking good.... :???:
by SETEC_Astronomy
Mon Apr 12, 2010 4:59 am
Forum: Computer Programming
Topic: Virtual Box ???
Replies: 5
Views: 2237

Re: Virtual Box ???

I've used it quite a bit, it works great. I've run Windows from Linux and vice versa. The free version lacks a few things but nothing a casual user would miss. I've also played with VMWare a bit. But VMWare runs a tad slow on my PCs so I tend to avoid it.
by SETEC_Astronomy
Sun Apr 11, 2010 6:04 pm
Forum: General Discussion
Topic: Monitor house current Magazine article Info??
Replies: 9
Views: 1462

Re: Monitor house current Magazine article Info??

jwax wrote:Would two "Kill-A-Watt" devices wired in series accurately log power consumed on a 220 VAC circuit? Hmm..
That made me think of plugging a Kill-A-Watt into another to measure a Kill-A-Watt's current draw.
by SETEC_Astronomy
Sun Apr 11, 2010 6:02 pm
Forum: General Discussion
Topic: Summer Starts And So Does The HVAC Trouble
Replies: 25
Views: 4654

Re: Summer Starts And So Does The HVAC Trouble

Replace the bleeder resistor if it really reads 6 Meg. The color bands are hard to see, but it looks like it is supposed to be ~15K. The time constant for discharging the cap (t=RC) is 6,000,000 X .000200 = 1,200 seconds using 6 megs. I think 20 minutes for the cap to discharge through a 6 meg resi...
by SETEC_Astronomy
Sat Apr 10, 2010 9:17 pm
Forum: General Discussion
Topic: Summer Starts And So Does The HVAC Trouble
Replies: 25
Views: 4654

Re: Summer Starts And So Does The HVAC Trouble

Thanks for the suggestion Robert. I was a little concerned about the quality of caps on ebay but I guess they can't be much worse then the one that was there. As long as they don't burst into flames it's worth trying for those prices.
by SETEC_Astronomy
Sat Apr 10, 2010 8:23 pm
Forum: General Discussion
Topic: Summer Starts And So Does The HVAC Trouble
Replies: 25
Views: 4654

Re: Summer Starts And So Does The HVAC Trouble

Hi SETEC, You did measure a short with the cap disconnected from the circuit, right? That's correct. I even clipped off the bleeder resistor to verify my reading. The resistor measures around 6Meg. The cap still measures as a short (.006 ohms) That seems high! Shop around at electric motor rewindin...
by SETEC_Astronomy
Sat Apr 10, 2010 7:06 pm
Forum: General Discussion
Topic: Summer Starts And So Does The HVAC Trouble
Replies: 25
Views: 4654

Summer Starts And So Does The HVAC Trouble

My AC stopped working the other day and I'm trying to track down the reason. Everything was working fine for about a week until the compressor stopped. When the thermostat calls for AC the compressor makes a loud hum for a few seconds and stops, waits a minute and hums again. My first thought was ba...
by SETEC_Astronomy
Mon Apr 05, 2010 6:31 pm
Forum: General Discussion
Topic: High speed video
Replies: 6
Views: 952

Re: High speed video

On the subject of TVs, I was under the impression that there were NO analog TV signals transmitted anymore due to the new FCC laws. But, I can get 5 weak stations (good old snowy pictures). I don't understand how they can still transmit. One of them is some stupid shopping channel. As I remember it...
by SETEC_Astronomy
Mon Apr 05, 2010 5:45 pm
Forum: General Discussion
Topic: High speed video
Replies: 6
Views: 952

Re: High speed video

It's only a small portion of the screen but you can still see it in this video -> High Speed Refresh Capture -- Found Here -> High Speed Video three other related videos accompany the one I linked.

A decent high speed pic can be found on this wiki page -> Refresh Rate - Wiki
by SETEC_Astronomy
Fri Apr 02, 2010 1:13 pm
Forum: General Discussion
Topic: Lost TV remote control action...
Replies: 11
Views: 1359

Re: Lost TV remote control action...

Did you add small value caps (15-33pf) on each leg to ground? Should work if you did.
by SETEC_Astronomy
Thu Apr 01, 2010 7:57 pm
Forum: General Discussion
Topic: Lost TV remote control action...
Replies: 11
Views: 1359

Re: Lost TV remote control action...

:eek: I didn't pay attention, I thought you had connected the Oscope to the board, not a phototransistor that picks up the real output.