|
Post by Gary Lecomte on Dec 1, 2008 19:49:48 GMT -8
I am Definately of the belief that this is Pinched Nerves. I am quite aware of Back problems. I had a Spinal Fusion, Lower Back, when I was 27, after 2 years of Real Leg Pain from pinched nerves. But I have always been Careful since than, and I haven't done anything that should cause this. Now Working on Stopping it. I HOPE
KEITHH: The real problem with Lead acid batteries is maintaining a Controlled, Maximum charge voltage. The Charge voltage SHOULDN'T Exceed about 14.6 Volts in a cyclic use or about 13.6 volts in a Standby use.
IF that charge voltage is Maintained, Than the charge current Will taper off as the battery charges. No Problem
IF NOT, You have REAL PROBLEMS.
|
|
|
Post by Gary Lecomte on Dec 1, 2008 7:47:11 GMT -8
When you use a bubbler, the cel has to go positive pressure to force the gas through the water in the bubbler (you can't suck a gas through a liquid, you gotta force it through.) More later, Ron. NOT TRUE. Both ways will work.
|
|
|
Post by Gary Lecomte on Dec 1, 2008 7:43:54 GMT -8
I am interested in your sensor, could be just what I have been looking for. Reg Not sure if you mean My Design or rmeyn's design? Unfortunately I deleted mine from that tempory folder. And now I can't find it on my computer.
|
|
|
Post by Gary Lecomte on Nov 30, 2008 20:47:40 GMT -8
Gary, Don't settle for tennis elbow. Particularly if the pain does not subside after a few days. Could be a pinched nerve from splitting wood. Wish you the best Richard M. Who Splits Wood? Not Me. Were on Natural Gas heat. But Considering the Location of the pain: The "Whole Arm and Shoulder", I also think its a Pinched nerve. (Tennis Elbow usualy only affect near the Elbow.)
|
|
|
Post by Gary Lecomte on Nov 30, 2008 8:16:38 GMT -8
Shouldn't complicate much, Except the possibility of over charging that additional set of batterys.
ANYWAY, I have done some serious damage to my right arm, not sure how, but lots of pain.
one Dr. says its "Tennis Elbow". Not sure i believe that! Going to get a second opinion, i think
Severe Pain extends from "my wrist up to and including my shoulder".
so almost everything is on hold. now typing with left hand, right arm in a sling.
not even sure i can fill the orders i have coming..
But anyway, SEASONS GREETING TO ALL.
Gary
|
|
|
Post by Gary Lecomte on Nov 30, 2008 8:08:11 GMT -8
I have done some serious damage to my right arm, not sure how, but lots of pain.
one Dr. says its "Tennis Elbow". Not sure i believe that! Going to get a second opinion, i think
Severe Pain extends from "my wrist up to and including my shoulder".
so almost everything is on hold. now typing with left hand, right arm in a sling.
not even sure i can fill the orders i have coming..
But anyway, SEASONS GREETING TO ALL.
Gary
|
|
|
Post by Gary Lecomte on Nov 28, 2008 20:43:52 GMT -8
Can someone tell me how to post a schematic or jpeg in my replies to messages? First you need to Upload it to Another Server, Than post it here as a Link to That Server and your File name. Sorry But this is a Free Forum and Unless I Pay a monthly fee for it, It doesn't give me space to Upload files directly here. If you email me the file, Possibly I could upload it to my Site and create the link to show it here, for you. Gary
|
|
|
Post by Gary Lecomte on Nov 28, 2008 9:04:07 GMT -8
Its Quite Easy.
1) Carefully Remove the High Voltage Secondary Winding.
2) Note: In between the Secondary and Primary winding there usually is a 2 to 3 turn HeaterWinding.
3) With that HV Secondary winding Removed, Than Connect a Small Load to this Heater winding. (Possibly a 2 to 6 Volt Flashlight bulb.) (This Small load is Recommended to get a More accurate reading.) Also connect an AC Voltmeter on this heater winding.
4) Plug in the transformer and Measure that voltage across that Bulb.
** Example 1) Now IF it measure 2 Volts and IF it has 2 Turns, That means you need "One turn per volt. (12-0-12 Turns for your inverter Primary.)
** Example 2) If it Measures 3 Volts and it has 2 Turns, it means you need "0.66 Turns per volt". (8-0-8 Turns for your inverter Primary.)
You can also test this out by quickly winding a small wire with that number of turns and measure the output voltage. (Ideally also with a Small Load)
Microwave Transformers are BEST, Because the 12 volt Primary you wind, Gets Wound Directly on the Core. Not Over Top of an Existing winding.
HOPE THIS HELPS!
EDIT: Testing the Red Wires on the Micro-Wave Transformer, PICTURED ABOVE, It has 2.8 turns and Measures 2.8 Volts. So 1 Volt per turn.
|
|
|
Post by Gary Lecomte on Nov 27, 2008 21:29:12 GMT -8
You may notice this on the opening page.
Sorry, Presently it is RESTRICTED and Password Protected.
I May let some people in to look, if they have a good reason, wanting to be there. But Only I can post.
|
|
|
Post by Gary Lecomte on Nov 27, 2008 21:24:16 GMT -8
HI Again guys, Thanks for your replies. Rmeyn, thanks..I hope that is so.. I live out of town and it is hard to get stuff cheaply these days and being out of town is not great. Gary and others ; I have found a transformer in my so called collection shed ( junk to my wife ) . It is a bit different from a MOT I think. It is marked TL2 ane 600591 ap. Measures 4.5 l x 4.5 h x 2.25 w . I can see some of the primary an it is a # 12 or 14 coated wire. It has a schematic on it. 2 wires = 115 vlt, primary, 2 wires = 17 vlts, secondary, epoxy coating Also, 2 wires P0 + P1, These are a secondary wiring around the primary of a couple strands and not the same wire used in the primary I think , but appears paint of a silver color? Also, 1 wire coming out of core secondary...I thought was was grnd but I think it is live according to my burnt meter.. Finally, I put a fused 115 AC to the primary and got 86.5 volts secondary. I put a AC clamp meter across the 115 and one side read 10 .2 amps, the other 4.8.. This transformer has quite a hum to it. Anyways, if anyone has and idea of what this is or if it can be used for the inverter plan then let me know. Im fairly new to transformers , but have played around with IC's for a bit. This link describes transformers rather well www.allaboutcircuits.com/vol_2/chpt_9/7.htmlThanks guys Keith It Doesn't sound like it was designed to operate at 115 Volts. Not if its Drawing that current Without a load on the output.
|
|
|
Post by Gary Lecomte on Nov 27, 2008 11:37:20 GMT -8
so to get 320 volts what should the two capacitor values be for the basic doubler? I plan on using ultra fast diodes. If I knew how to upload the schematic I would but it is a basic 2 diode doubler with two capacitors. THe one to one transformer is used for isolation only. I have an old Line Isolation Monitor supplying my work station. Sorry,I have No time now to give you a Schematic. But WHY "Ulta Fast Diodes"? Ultra Fast Diodes are made for "High Frequencys", NOT 60 Hz. And What is your Expected DC Output Current?
|
|
|
Post by Gary Lecomte on Nov 27, 2008 8:03:57 GMT -8
A 1:1 Transformer Doesn't Increase Voltage, it just isolates. But Diodes can be used as a Doubler to increase voltage. A Doubler circuit with suitable filter caps will give about 2.8 Times the RMS voltage.
115 volts Rectified will give about 160 VDC. 115 volts with a Doubler and Filter caps will give about 320 VDC.
|
|
|
Post by Gary Lecomte on Nov 26, 2008 14:38:33 GMT -8
What Output Voltage? At What Output Current? And What do you want to use for your power source?
|
|
|
Post by Gary Lecomte on Nov 24, 2008 21:04:50 GMT -8
Read the Post Below: "Dump load question".
And I'm working on a new design.
|
|
|
Post by Gary Lecomte on Nov 23, 2008 20:25:35 GMT -8
I have Re-Designed this with Mosfet and am now testing it on a Breadboard. Preliminary Schematic also Drawn up, But have two errors on it that I need to correct.
I also relpaced the LM339 with an LM358.
Should have some results soon.
Assuming all is OK, I will do up a PC Board for it.
Gary
|
|