Search found 1327 matches

by Lenp
Tue Jul 24, 2007 5:57 am
Forum: General Discussion
Topic: Relay chatter
Replies: 27
Views: 6708

Years ago we had some equipment that suffered relay chatter from being induced on to the coil voltage. We 'fixed' it with a cap across the coil and a small adjustment to the relay's armature spring tension. Depending on the characteristics of the noise a diode in series with the relay coil voltage m...
by Lenp
Sun Jul 15, 2007 5:45 am
Forum: General Discussion
Topic: Plastic Sheet That's Flexible-Machinable-Paintable?
Replies: 8
Views: 1977

I assume that you need a stable mounting surface for the plastic sheet. Why not coat the rear of the plastic sheet with auto body filler, like Bondo. When it cures it will harden. I would deeply sand the wall side of the plate for good adhesion first. When pressed to the surface it will fill the low...
by Lenp
Sun Jul 15, 2007 5:11 am
Forum: General Discussion
Topic: The impending death of incandescent bulbs
Replies: 100
Views: 15871

I have had mixed feelings about CFL's 1. Premature failures of several units. Circuit failures, not the lamp itself. 2. Slow time to full brightness on some high wattage units. 3. Undependable operation in cold weather 4. Cannot be used on solid state switched circuits, like occupancy sensors since ...
by Lenp
Sun Jul 15, 2007 4:43 am
Forum: General Discussion
Topic: Portable Power Tool Question.....
Replies: 14
Views: 2956

Thoughts about battery packs In the past we used to repair/rebuild our tool packs. Cutting, drilling, soldering, taping squeezing, cussing...you know the drill. If you replace one or two cells, the performance still is not great since it's likely others have diminished capacity, so it still is a poo...
by Lenp
Sat May 26, 2007 2:02 pm
Forum: General Discussion
Topic: telephone call blocker for incoming calls
Replies: 16
Views: 3428

Ah Yes, Politicians...
They spend the first half of their term paying back favors, and the second half buying new ones. In between, well not much good hapens!
by Lenp
Thu May 24, 2007 4:57 am
Forum: Up For Grabs
Topic: HP-4500 Printer Duplexer <<GONE>>
Replies: 3
Views: 2768

Sorry,
The duplexer and supplies are GONE!
Len
by Lenp
Thu May 24, 2007 4:55 am
Forum: Up For Grabs
Topic: Network Cards <<GONE>>
Replies: 7
Views: 3663

Hi Guys,
Due to the overwhelming response and demand for these legacy network cards, they have joined their fellow technology wonders at the landfill recycling center!
Len
by Lenp
Sun Apr 22, 2007 3:00 pm
Forum: Up For Grabs
Topic: HP-4500 Printer Duplexer <<GONE>>
Replies: 3
Views: 2768

frhrwa The HP-4500 is a color printer. The duplexer is an attachment that sits under the 4500 and takes the paper from the printer, flips it over and sends it back through the printer so that it will print on the back side. Some newer printers have this feature without the need for an attachment. Th...
by Lenp
Sat Apr 21, 2007 5:23 am
Forum: General Discussion
Topic: Anyone ever had a problem with Jameco?
Replies: 37
Views: 6238

Really Dumb Shipping

Hey guys, I am into industrial controls design and service so I order from Grainger quite often. Recently I ordered 50 rubber wheels. They are 3" diameter, 1.5" wide with a ball bearing. I got a delivery from UPS of three HUGE boxes. Inside the boxes was a slew of 10x10x10 boxes. Each box had two wh...
by Lenp
Sat Apr 21, 2007 5:00 am
Forum: Up For Grabs
Topic: HP-4500 Printer Duplexer <<GONE>>
Replies: 3
Views: 2768

HP-4500 Printer Duplexer <<GONE>>

Hey guys, I have an HP-4500 color printer duplexer assembly up for grabs! I junked the printer and the duplexer is left. I also have a fuser assembly and some cartridges in the bundle. I had it on eBay for $35 an there were no takers, so, just prepay the shipping and it's yours. If no takers here, i...
by Lenp
Sun Mar 11, 2007 6:40 pm
Forum: General Discussion
Topic: Help repairing a melamine counter top (semi elect related)
Replies: 18
Views: 2650

MrAl You might want to try appliance touch up paints. They are available in appliance parts stores and some large hardware chains These paints dry very hard, are available in colors that mignt be mixed to match and come packaged in small brush applicator bottles. If it doesn't work, solvent should r...
by Lenp
Sat Mar 03, 2007 9:02 pm
Forum: Up For Grabs
Topic: Network Cards <<GONE>>
Replies: 7
Views: 3663

Al,
The Novell cards are all ISA slot, but, I may have some PCI cards someplace else. Even some IBM token ringers are in the mix.

Don't be shy! Ask for them if you want them !-)

Len
by Lenp
Sat Mar 03, 2007 8:42 pm
Forum: General Discussion
Topic: NEUTRAL?? OR GROUND??
Replies: 17
Views: 3296

Just a quick one... As a past electrical inspector and current industrial controls technician, I'll not add to the thread since it's all been said already. Most all of the posts are right on target, and those that are not are really quite obvious. I hate to get into this fray, but, an old saying doe...
by Lenp
Tue Feb 06, 2007 4:29 pm
Forum: General Discussion
Topic: Sensor used for temperature regulating soldering irons?
Replies: 11
Views: 1991

Mr Al This is a little off the subject but I use a soldering station made by Weller. It uses tips that have a special metal slug crimped at the end that goes into the iron. The iron has a magnetic switch that cycles the heater. When cold, the magnetic switch is attracted to the slug on the tip. At t...
by Lenp
Mon Feb 05, 2007 2:24 pm
Forum: General Discussion
Topic: NUKING a Grape in the microwave
Replies: 24
Views: 4383

Another add on... A microwave oven will also light a small fluorescent tube, but it will get quite hot so shorten the 'test' Also a paper clip bent in a circle placed on a glass plate with the ends about 1/4" apart will arc!. Look up nucleation for some rare but potentially hazardous results of boil...