Search found 18 matches

by WCE4
Sat Feb 24, 2018 11:16 am
Forum: General Discussion
Topic: Very unusual desoldering method...
Replies: 9
Views: 3122

Re: Very unusual desoldering method...

I tried it and it does work. Here is a few suggestion. Use sunglasses, a heat shield on the back end of the bulb, make or purchase a ceramic lamp holder for the bulb and use welding gloves.
I used 120v halogen lamp. (It is not my preferred method to do it this way) :yuck:
by WCE4
Sat Feb 24, 2018 10:55 am
Forum: General Discussion
Topic: Constructive criticism needed for a DIY A.V.R.
Replies: 0
Views: 4721

Constructive criticism needed for a DIY A.V.R.

:? I am trying build a AVR (Automatic Voltage Regulator) for a Revolving Field,Self-Ventilated, Open Protected Type Synchronous Generator. The generator is a 25 KVA (20 KW), 60 Hz, 1,800 RPM, three phase,240/480 volts Star with a neutral synchronous generator that is wired up as a single phase zig-z...
by WCE4
Sat Feb 26, 2005 11:35 pm
Forum: General Discussion
Topic: LCD HELP
Replies: 3
Views: 1280

Re: LCD HELP

Thanks for the info I sent a email to Stanley as of this date i have not heard from them.
One of the displays has 5 Epson IC # SED1180F and a input number from 1 to 15 the other has 6 Toshiba IC #T6836 it also has a input # from 1 to 15
by WCE4
Fri Feb 25, 2005 8:55 pm
Forum: General Discussion
Topic: LCD HELP
Replies: 3
Views: 1280

LCD HELP

I am loking for any info and or datasheet on two Stanley LCD Module's the first one has a part # GMF25064ABTW the second is GMF25012GBTW I pick up the displays at a ham meet and was hoping to use them as a display a a FIRST Robot meet coming up. I am a mentor for a High School Robot club
by WCE4
Wed Dec 31, 2003 12:03 am
Forum: General Discussion
Topic: 480VAC Transformer
Replies: 11
Views: 2822

Re: 480VAC Transformer

Sorry it took me so long to reply to all of you who were nice to reply to my question. First I would not use the first reply at any time. Second I am a Licensed Master Electrician. Third the project I am trying to design is a circuit that uses a pic microchip to monitor two points in an industrial m...
by WCE4
Fri Dec 19, 2003 8:48 pm
Forum: General Discussion
Topic: 480VAC Transformer
Replies: 11
Views: 2822

480VAC Transformer

Looking for a supply of 480vac 60Hz to 8vac @.15a
Transformers small foot print for a Printed Circuit board.
by WCE4
Tue Oct 07, 2003 2:47 pm
Forum: General Discussion
Topic: PC Trace & Optoisolator
Replies: 10
Views: 3216

Re: PC Trace & Optoisolator

<blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr>Originally posted by RonH: <p>Be aware that the optoisolator will only operate on one half of the cycle, unless it has anti-parallel LEDs. If it only conducts in one direction, you will need a diode connected anti-para...
by WCE4
Tue Oct 07, 2003 2:34 pm
Forum: General Discussion
Topic: PC Trace & Optoisolator
Replies: 10
Views: 3216

Re: PC Trace & Optoisolator

<blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr>Originally posted by dacflyer: as far as trace thicknesses...if foil is in doubt..solder some 16GA or 14GA stripped of insulation along the trace path...if not too difficult for you... i have done this many times to re...
by WCE4
Tue Oct 07, 2003 2:31 pm
Forum: General Discussion
Topic: PC Trace & Optoisolator
Replies: 10
Views: 3216

Re: PC Trace & Optoisolator

<blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr>Originally posted by bodgy: Maybe or may not be of any help.<p>The link below will tell you which part of the standard you need to find<p> http://www.i-spec.com/Product_Design/pcb.html <p>Complete requirements are give...
by WCE4
Sun Oct 05, 2003 7:32 pm
Forum: General Discussion
Topic: PC Trace & Optoisolator
Replies: 10
Views: 3216

Re: PC Trace & Optoisolator

<blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr>Originally posted by cato: you can use a capacitor as your impedance to limit the current. Figure out how much current you need to turn on the opto. Figure out what resistance you would need to limit the current to tha...
by WCE4
Sun Oct 05, 2003 7:22 pm
Forum: General Discussion
Topic: PC Trace & Optoisolator
Replies: 10
Views: 3216

Re: PC Trace & Optoisolator

<blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr>Originally posted by bodgy: This varies, depending on the copper thickness, and on a particular line of thought, I have two charts for 1oz copper neither of which agree with each other. <p>The voltage part is the separ...
by WCE4
Sat Oct 04, 2003 4:38 pm
Forum: General Discussion
Topic: PC Trace & Optoisolator
Replies: 10
Views: 3216

PC Trace & Optoisolator

Hello everyone I have two Questions?<p>1: What size should a pc trace be to carry 5 amps at 120v AC?<p>2: What is the best way with the least amount of heat to reduce a 120v ac supply to turn on a AC input optoisolator Vf (led) = 1.5 max If = 10 mA Part No. H11AA1 <p> Thanks for the help WCE4 :confu...
by WCE4
Sun Sep 21, 2003 6:03 pm
Forum: General Discussion
Topic: Moisture detector
Replies: 6
Views: 1830

Re: Moisture detector

<blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr>Originally posted by Chris Smith: I sent you a "touch switch" which is how I did mine back then. Compare the two? <p>I'll look it up also.<p>Just looked and their different. <p>"Two" is the touch input. <p>Let me know ...
by WCE4
Sat Sep 20, 2003 4:38 pm
Forum: General Discussion
Topic: Moisture detector
Replies: 6
Views: 1830

Re: Moisture detector

Chris <p>Maybe I am going about this the wrong way this how I have the circuit wired.

Pin 1 to Ground
Pin 2 to 6 with a 0.1 uf cap. going to ground
Pin 6 to a 150k res. to pin 3
Pin 6 to a 390 ohm res. to a 0.22 uf cap.to probe
Pin 8 to 4 to +5v dc
Pin 7 to a PIC16f84
:confused:
by WCE4
Sat Sep 20, 2003 2:01 pm
Forum: General Discussion
Topic: Moisture detector
Replies: 6
Views: 1830

Re: Moisture detector

Chris Smith
Thanks for the reply.I am Having a under sensitive problem.