[volt-nuts] FS: HP 4338A

Manuals here: http://www.keysight.com/en/pd-4338A%3Aepsg%3Apro-pn-4338A/milliohmmeter?pm=PL&nid=-536900197.536897596&cc=US&lc=eng Does R, X, L and phase. $500 OBO, plus shipping/insurance. Joe Gray W5JG ___ volt-nuts mailing list -- volt-nuts@febo.com

[volt-nuts] FS: VS330

EDC VS330 voltage standard. Seven digits of rotary knobs. Ranges of 300mV to 300V. Had this calibrated about six months ago. I posted the user/service manual on KO5BB a long time ago. Asking $400 OBO, plus shipping & insurance. Joe Gray W5JG ___ volt-nu

Re: [volt-nuts] Load Testing a PSU

This is a good and certainly inexpensive way to do a static load test on a power supply. In the past, I used four very large, low-value, wirewound power resistors in parallel to do this. For more money, but much more capability, you can get a dynamic DC load. A dynamic load will let you test vari

Re: [volt-nuts] Load Testing a PSU

Tom, I'm guessing that Stan meant that you use the shunt as a load resistor. Joe Gray W5JG On Tue, May 17, 2016 at 11:07 AM, Tom Miller wrote: > You are mixing the terms "shunt" and "load" I believe in error. The shunt is > not a load. It would be in series with the load. > > > - Original

[volt-nuts] Just back from cal

In February, I sent my HP 3457A in for cal. In late March, I sent my EDC VS330 DC Voltage Reference in for cal. Today, I just got the VS330 back and thought I'd compare the two instruments. Both instruments have been on for a couple of hours. It is about 25 C in the room. Setting 10.0 on the

[volt-nuts] Temperature sensor

I want to setup an experiment where I log both voltage and temperature. I will be using DS18S20 sensors. I would like to shield the sensors from direct air currents due to AC and heating system. I'm thinking perhaps something simple, like a pill bottle drilled with holes to minimize the effects of

Re: [volt-nuts] 10VDC

Frank, Thanks for the info. Do you have a link to the EEVblog discusison on this? If not, possibly some search terms to narrow it down (10VDC is too generic). Joe Gray W5JG On Tue, Mar 8, 2016 at 4:47 PM, Frank Stellmach wrote: > Hi Joe, > > yes, there has been a longer discussion on eevblog a

[volt-nuts] 10VDC

If this was discussed before, I must have missed it. Can anyone explain the historical significance of why 10VDC is used? Is is simply because it is a nice round number? Joe Gray W5JG ___ volt-nuts mailing list -- volt-nuts@febo.com To unsubscribe, go to

Re: [volt-nuts] Wanted - UK source of a replacement battery (type LX 1634) for HP 3457A 6.5 digit multimeter

I just replaced the battery in my 3457A. From Mouser: Panasonic BR2/3AE2SP Joe Gray W5JG On Sun, Jan 24, 2016 at 12:54 PM, Dr. David Kirkby (Kirkby Microwave Ltd) wrote: > I've got a HP 3457A 6.5 digit multimeter - S/N 2703A04579. It's working > fine, but I'm aware the battery must be at least

Re: [volt-nuts] Wanted - UK source of a replacement battery (type LX 1634) for HP 3457A 6.5 digit multimeter

A Google search for that Panasonic battery brings up quite a few vendors. One is Newark (Element 14). You should be able to find a UK source. Joe Gray W5JG On Sun, Jan 24, 2016 at 3:12 PM, Joseph Gray wrote: > Lots more info here: > http://www.eevblog.com/forum/blog/eevblog-426-hp

Re: [volt-nuts] Wanted - UK source of a replacement battery (type LX 1634) for HP 3457A 6.5 digit multimeter

Lots more info here: http://www.eevblog.com/forum/blog/eevblog-426-hp-3457a-multimeter-teardown/msg194058/#msg194058 The Panasonic battery I just used measured 3.39 VDC. Joe Gray W5JG On Sun, Jan 24, 2016 at 2:24 PM, Poul-Henning Kamp wrote: > > In message > > , "Dr. David Kirkby (

Re: [volt-nuts] HP3458A cal ram data dumper

Thanks. One of these days, I'll see if I can figure out where in RAM this stuff is for the 3458A. Joe Gray W5JG On Wed, Dec 24, 2014 at 7:11 PM, Mark Sims wrote: > It's only for the 3458A. > Unless you want to play with the code, you only need the pre-compiled .EXE > in your GPIBKIT directoty

Re: [volt-nuts] HP3458A cal ram data dumper

Would this work on a 3457A by any chance? Joe Gray W5JG On Wed, Dec 24, 2014 at 4:24 PM, Mark Sims wrote: > I have uploaded a .ZIP file with the source code and Windows .EXE file for > the calibration/data memory data dumper program here: > http://s000.tinyupload.com/index.php?file_id=02197796

Re: [volt-nuts] EDC VS330 and 1030/1030G2 Standard Manuals

I uploaded the manual for the VS330 to the KO4BB site many months ago. Joe Gray W5JG On Wed, Aug 6, 2014 at 11:33 AM, Charles Steinmetz wrote: > Sam wrote: > > If anyone has a manual with schematics for the EDC Electronic Development >> Corp, VS330 and 1030/1030G2 DC reference standards that

Re: [volt-nuts] Stuff for free and for sale

Also gone. Joe On Sat, May 24, 2014 at 6:02 AM, Simon McNally wrote: > Oh well, guess this stuff does not hang about long! What about the keithley > board? > > > Sorry, it is gone. > On May 23, 2014 2:08 PM, "Simon McNally" > wrote: > >

Re: [volt-nuts] Stuff for free and for sale

Sorry, it is gone. On May 23, 2014 2:08 PM, "Simon McNally" wrote: > I would be interested in the fluke 8842A if you can tell what the postage > would be to the UK > Regards > Simon McNally > ___ > volt-nuts mailing list -- volt-nuts@febo.com > To unsu

Re: [volt-nuts] Stuff for free and for sale

1000 Hz. Joe Gray W5JG On Sun, May 11, 2014 at 8:46 PM, Dallas Smith wrote: > > Hi Joe, > > Whats the frequency of the Fluke 510A? > > Dallas > > > > On 5/11/2014 10:31 PM, Joseph Gray wrote: >> >> Fluke 510A AC reference standard. Has original

[volt-nuts] Stuff for free and for sale

I'm posting this to both the Time Nuts and Volt Nuts list, as some folks don't belong to both. I need to get rid of some items. It has gotten so cluttered around here that I can hardly get any work done. Several items are free for the cost of postage. These items are marked (postage). The rest of

Re: [volt-nuts] VS330

I just downloaded it and had no problems opening the PDF. I stopped using Adobe reader long ago, so can't comment on it. I currently use the free Foxit reader. Joe Gray W5JG On Sat, Sep 21, 2013 at 9:41 AM, RF PRECHTL K7DFW wrote: > > > > > > Downloaded this pdf from KO4BB and my Adobe reader

[volt-nuts] VS330

I did finally get a manual for the EDC VS330 DC Voltage Standard from Khron-Hite. I asked them if it was OK to upload it the the KO4BB site. After two weeks and no reply, I figured they didn't care, so I uploaded it. It should appear for download sometime soon. Joe Gray W5JG __

Re: [volt-nuts] Old Weston cells

010 after the KV if the multimeter is a 10 M version. But I > still wonder if that is needed. I tested it with some meters but did not > notice a difference that was within the meters resolution. > > > Fred, pa4tim > > > > > Verzonden met Windows > > > > Van:

Re: [volt-nuts] Old Weston cells

I suspected that there was nothing to do to rejuvenate these old cells. I thought I'd ask anyway. Thanks. Joe Gray W5JG On Mon, Aug 26, 2013 at 9:16 PM, zbigniew169 wrote: > All my knowledge regarding Weston Cells tells me that is not possible in > any way :-(( > > > 2

Re: [volt-nuts] Old Weston cells

#x27;. > > Joe > > -Original Message- > From: volt-nuts-boun...@febo.com [mailto:volt-nuts-boun...@febo.com] On > Behalf Of Joseph Gray > Sent: Monday, August 26, 2013 9:59 PM > To: Discussion of precise voltage measurement > Subject: [volt-nuts] Old Weston cells > >

[volt-nuts] Old Weston cells

I got my hands on a few very old, unsaturated cells. I figured that they would be no good after all this time. Just out of curiosity, I measured them on my 3457A, which hasn't been sent off for calibration yet. DMM was set to 3 V scale to keep the input impedance high. Room temperature = 26 C. Ce

Re: [volt-nuts] LM399 on eBay

I saw those also. There are a few ebay vendors selling those. They certainly seem to have a lot of them. One can only wonder what equipment got stripped to harvest these. There are also a few vendors selling what look to be new parts. Related to this, just yesterday I picked up the main board from

Re: [volt-nuts] Agilent calibration - certificate for a vector network analyzer (VNA)

David, That is quite a difference between the two certificates. The Techmaster one doesn't tell you anything about what they actualy measured, or the uncertainties. You have to trust that they know what they are doing and that they actually did it. With the Agilent certificate, there is data to gi

Re: [volt-nuts] HP 3457A Arrived

Thanks, Charles. That other companies uncertainties really do suck as badly as I thought they did. Joe Gray W5JG > > > [Fluke] > >

Re: [volt-nuts] HP 3457A Arrived

ticed when it was open was the remnants of a wire that had been tack soldered to what looks like a voltage regulator. See the picture here: https://dl.dropboxusercontent.com/u/19599147/HP%203457A%20Oddity.jpg Joe Gray W5JG On Thu, Aug 22, 2013 at 1:31 PM, Joseph Gray wrote: > I got the O

Re: [volt-nuts] HP 3457A Arrived

sonic BR-2/3AE2SP. The tab on one end has one point, the other end has two. Mouser sells these for $5.24. Joe Gray W5JG On Wed, Aug 21, 2013 at 5:34 PM, Joseph Gray wrote: > Boy, I have the worst of luck. I think Murphy follows me around. I won't > bore you with the details about m

[volt-nuts] HP 3457A Arrived

Boy, I have the worst of luck. I think Murphy follows me around. I won't bore you with the details about my recently dropped by Fedex service monitor and major repair cost. The 3457A arrived. Other than missing feet, it looked in decent condition. I powered it up and that is when things went wrong

Re: [volt-nuts] HP 3457A calibration?

If you count each calibration procedure in the manual, you get 16. If you count each scale in each procedure, it is several times that. I suspect that the calnum is only incremented for each procedure. Joe Gray W5JG On Aug 20, 2013 1:10 PM, "Joseph Gray" wrote: > I've wa

Re: [volt-nuts] Fluke 732B

That's what happens when I type emails on my phone :-) I'm still envious of your voltage standards. Joe Gray W5JG On Aug 20, 2013 11:13 AM, "Bill Gold" wrote: > Joe: > > Thanks for the upgrade, but they are only 732As not Bs. I got all of > these at less than the going price of one 732B t

Re: [volt-nuts] HP 3457A calibration?

I've watched a few of his videos and they are all like that. Considering his apparent knowledge level and how boring he is, I probably won't bother with his other videos. Joe Gray W5JG On Aug 20, 2013 11:48 AM, "Dr. David Kirkby" wrote: > On 20 August 2013 15:27, Rob Klein wrote: > > Good vide

Re: [volt-nuts] Fluke 732B

Bill, With six 732B's, you certainly qualify as a volt nut. Joe Gray W5JG On Aug 20, 2013 10:37 AM, "Bill Gold" wrote: > Joe: > > The 731A and 731B were run at room temp and therefore were subject to > room variations. They both use the same "Reference Amplifier" as the 732A > & B use. I

Re: [volt-nuts] HP 3457A calibration?

I have replaced this type of battery in other equipment, so it isn't a big deal for me. I'm sure I can do it without losing the cal data. Joe Gray W5JG On Aug 20, 2013 9:43 AM, "Dr. David Kirkby" wrote: > On 20 August 2013 14:51, J. L. Trantham wrote: > > If the battery is 'OK', I would favor

Re: [volt-nuts] HP 3457A calibration?

ll this via HPIB (at least that's what I think), it > increments the 'cal counter' only by '1' step. > > I would opt for a 'cheaper' 'seems to be working' 3457A then send it to > Agilent for their calibration rather than spend extra for som

[volt-nuts] Fluke 8842A

I just got a totally dead 8842A. After I repair it, I was thinking of perhaps using it as the basis of a homemade 10 VDC reference. It has one of those Motorola buried zener references in it. There is a test point for the 7 VDC reference. I'll have to look at the schematics for the 731 to see how F

[volt-nuts] HP 3457A calibration?

Recently, we were discussing where to get a DMM calibrated. Someone mentioned an ebay seller in Albuquerque who had their meters calibrated across town by a company with a similar name. I am currently watching a YouTube video about the HP 3457A. At around 7 minutes, take a look at the calibration

Re: [volt-nuts] Fluke 732B

Yes, it was very cool to see the insides of the 732B. The older standards apparently ran at room temperature. The oven assembly looks like quite a bit of engineering went into it. The link that was provided to a Chinese site does have some interesting details about the entire Fluke reference serie

Re: [volt-nuts] Precision resistors

not want your resistor to rise to that temperature. This way leads > to several interrelated compromises. > > Laurence Motteram > > > From: volt-nuts-boun...@febo.com [volt-nuts-boun...@febo.com] on behalf > of Joseph Gray [jg...@zianet.com]

[volt-nuts] Fluke 732B

There was a very interesting teardown of a 732B on the EEVBlog forum. I downloaded the service manual, but it seems that the details on the voltge reference section is missing. Does anyone have a full schematic of the voltage reference? Teardown is here: http://www.eevblog.com/forum/testgear/fluk

Re: [volt-nuts] Precision resistors

Raj and John, Thanks for the advice. I'll go with some mild dish detergent and water. The black, rectangular resistors are definitely marked "Daven", just like all the others. The bobbins are marked .02%, 1/2 W. The black rectangles are .1% (no wattage) and the micas are simply marked 85, which I

[volt-nuts] Precision resistors

What is the recommended method for cleaning dirt, oil, etc from precision resistors? I'm talking about a combination of wirewound on plastic bobbins, wirewound on mica (and sealed with something) and an unknown type that is encapsulated in black plastic rectangles. These are all 1950-1960 vintage a

[volt-nuts] Fluke 893A

While Googling, I came across this on Craigslist: http://phoenix.craigslist.org/nph/tls/3919599836.html Out of curiosity, I called the guy. He says he still has it. I decided not to buy it, as the shipping would probably be twice the $10 he is asking. Besides, I have the 895A now. If anyone here

Re: [volt-nuts] Fluke 895A

You can get two digits from the last dial scale. I didn't say I believed them :-) In fact, given the age and history of this thing, I'm surprised that even the first digit is believeable. Joe Gray W5JG On Wed, Aug 14, 2013 at 12:43 AM, Charles Steinmetz wrote: > Joe wrote: > > Just messing ar

[volt-nuts] Fluke 895A

Since last night, I have been playing around with a borrowed 895A. Since it hasn't been used in many years, I put it on the variac and brought it up slowly. It was last calibrated in 1991 and still had the non-tamper labels on various screws. I opened it up not only to look at it, but to blow out

[volt-nuts] Agilent calibration

Since some of you have used Agilent calibration, perhaps you can answer a question for me. The Agilent web site lists this description for one of the options: *"Agilent Calibration Per Incident* - Calibration using full manufacturer-defined procedures, including adjustments and pre/post data for o

Re: [volt-nuts] Sn10Pb90

let us know, what you are using the solder > for. > > Volker > DF9PL > > > Am 12.08.2013 15:06, schrieb Joseph Gray: > >> As I asked in my original message, I'm trying to find out where I can buy >> a >> small quantity of rosin-core 10/90 (tin/lead) so

Re: [volt-nuts] Sn10Pb90

mium-Solder, or Sn10Pb90, which is >> Stannum/Plumbum-only? >> >> And what do you what it for? In (very high) precision applications there >> are so many issues to consider that the solder doesn't appear to be at a >> high priority... >> >> Volker

[volt-nuts] Sn10Pb90

Reading through the archives, I saw that there was some discussion about a safer alternative to cadmium-based solder. The low tin, high lead alloy was recommended as a good low-thermal EMF substitute. However, I did not see any recommendations on where to buy some of this. I just did some searchin

Re: [volt-nuts] HP 3457A

Would a 34401A be a better choice, over a 3457A for a budding volt-nut? It is newer and smaller, and the ebay pricing is similar. Would having that extra digit via GPIB on the 3457A really be of any practical value? Joe Gray W5JG On Sun, Aug 11, 2013 at 10:29 AM, Charles Steinmetz wrote: > Chu

[volt-nuts] Dial-a-vider

I know someone who has a General Resistance Dial-a-vider DV-4107 that I may be able to trade for. It has input terminals marked "700 V Max" and seven decade switches. It is also labeled "Input Resistance 100,000 Ohms". I Googled, but can't find any information at all on this. The closest that I fi

[volt-nuts] HP 3457A

If I want to buy a used 3457A, is it better to buy one "as-is" and send it for calibration, or perhaps spend a bit more and get one already calibrated? Just one example: http://www.ebay.com/itm/HP-3457A-6-5-Digit-Lab-Quality-Front-Terms-Fully-Refurbished-NIST-Cal-/300928374155 Joe Gray W5JG _

Re: [volt-nuts] Fluke 510A

Oops. It was getting late and I guess my fingers typed the wrong digit :-). Yes, I was thinking about getting a better DMM. Joe Gray W5JG On Sat, Aug 10, 2013 at 10:06 AM, Bob Smither wrote: > On 08/09/2013 10:40 PM, Joseph Gray wrote: > > > > > I'll probably se

Re: [volt-nuts] Leave it on?

gt; stable lab temperatures eliminates thermal shock as one factor to > destabilize your reference's setting. > > > > At 01:27 AM 8/9/2013, Joseph Gray wrote: > >> Since the VS330 is designed to be a portable voltage standard, is it >> better >> to leave it

[volt-nuts] Fluke 510A

I just traded for a 510A AC reference. It puts out 10 VAC. This one is marked 1000 Hz. Being cautious with such an old piece of gear, I brought it up slowly on a variac, so as not to blow the filter caps. Still not having sent off anything for calibration, I attached a 5.5 digit DMM to the 510A an

[volt-nuts] Cool looking old stuff

I'm helping the local surplus guy by going through some old gear and checking it over. Sometimes I find something useful :-) I just took apart a Millivac Instruments MV-37B DC Differential Voltmeter, mostly because I was curious to see what was inside (I haven't powered it on yet). Most of what I

[volt-nuts] Leave it on?

Since the VS330 is designed to be a portable voltage standard, is it better to leave it on all the time or not? The manuals for other models don't say, but they do talk about the short power up time to achieve rated accuracy. So far, I have left it on. I know that there are various drifts over tim

Re: [volt-nuts] VS 330 arrived

Yesterday I borrowed the Fluke 189 from work and comparied it against my HP 3478A. Today, from another source, I borrowed a 4.5, 5.5 and 6.5 digit DMM and checked them all against the VS330. None of these DMMs have been calibrated in a while. On various ranges, all of them showed either exactly wh

Re: [volt-nuts] VS 330 arrived

es are accurate. Every meter I try shows exactly x10 for each switch, on various ranges. I know that the VS330 is designed to be a "portable" standard, but I've left it powered on since I received it. I figure that this will give me the most stable output. Joe Gray W5JG On Tue, Aug 6,

[volt-nuts] DMM calibration

I just got the following quote for getting my HP 3478A calibrated. 35.00 for ISO 9001 no data 87.50 for Z540 with data and uncertainties 275.00 for 17025 with data, uncertainties and logo calibration. I still didn't get any explaination as to exactly what the lab does for each of these price poin

[volt-nuts] Fluke differential meters

The local surplus guy has at least three different differential meters that have been collecting dust for decades. I have borrowed two of them (so far). The first one is a Fluke 893A and is solid state. Although it appears to work, it fails the very first of the performance tests. Now that I have

Re: [volt-nuts] VS 330 arrived

ugust 2013, 4:24 > Subject: Re: [volt-nuts] VS 330 arrived > > > Accidents do happen. > > No, just kidding. Probably means all three are very close. > > Joe > > -Original Message- > From: volt-nuts-boun...@febo.com [mailto:volt-nuts-boun...@febo.com] On > Behal

[volt-nuts] Fluke 893A

Does anyone have a complete manual for this? The one from Fluke is missing chapters. Joe Gray W5JG ___ volt-nuts mailing list -- volt-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts and follow the instructions

Re: [volt-nuts] EDC VS330 Voltage Standard

13 at 12:26 PM, J. L. Trantham wrote: > Sorry to hear that. I suspect someone has one somewhere. Hopefully you'll > get lucky as well. > > Joe > > -Original Message- > From: volt-nuts-boun...@febo.com [mailto:volt-nuts-boun...@febo.com] On > Behalf Of Joseph

Re: [volt-nuts] EDC VS330 Voltage Standard

Just a follow up. You were lucky getting a manual. I just got a reply from Krohn-Hite, saying that no manual was avaialble. Joe Gray W5JG On Sun, Jul 28, 2013 at 4:11 PM, J. L. Trantham wrote: > > Do you have a manual? I have an EDC CR103 voltage and current standard and > was able to find a

[volt-nuts] VS 330 circuit board oddity

Of course, before powering up the VS 330, I had to remove the covers and take a look inside. Everything looked intact and reasonably clean. You can tell that someone re-painted the top cover. It is glossy and smooth. The bottom cover is matte finish and textured. I did see one oddity on the circu

[volt-nuts] VS 330 arrived

The new toy that I don't really need arrived :-) According to my uncalibrated HP 3478A, the VS 330 seems to be working fine. The voltages are very close to expected values and the increments via the switches are consistent. Not knowing the accuracy of either the DMM or the VS 330, I still thought

Re: [volt-nuts] Voltage to frequency

> JJ on a chip commercially. > http://www.hypres.com/products/voltage-standard/#Features%2FSpecifications OK, how long before I can buy one on ebay for $100? :-) Joe Gray W5JG _

Re: [volt-nuts] Voltage to frequency

I found this app note that looks interesting. http://www.stanford.edu/class/ee122/Parts_Info/datasheets/LM331-AN-C.pdf Joe Gray W5JG On Mon, Jul 29, 2013 at 1:55 PM, Joseph Gray wrote: > I imagine that this has been discussed before, but I didn't see anything > in the archives.

[volt-nuts] Voltage to frequency

I imagine that this has been discussed before, but I didn't see anything in the archives. Long before my recent weakness and ordering of that voltage standard on ebay, I had thought about using a voltage to frequency converter. Since it is relatively easy and inexpensive to have a very accurate fr

[volt-nuts] Cal labs

I found that there are at least two cal labs in El Paso, which is reasonably close to me. One, Techmaster Electronics has pricing listed (I hate it when everyone says "contact us for a quote"). The other is MetroCal, which lists no information at all. Has anyone used either of these companies? Wha

Re: [volt-nuts] (no subject)

I'm going to email K-H as J. L. Trantham suggested. Joe Gray W5JG On Sun, Jul 28, 2013 at 3:56 PM, Tom Miller wrote: > Can you get a service/calibration manual for it? > > I just sent my HP3457A out for calibration. $150 > > Tom > > - Original Message -

Re: [volt-nuts] EDC VS330 Voltage Standard

When I get the VS330, I think I'll first try setting it for 5 V and comparing the 3478A reading with what I got with the MAX6350. If I get about the same reading of 5.0026 V, is it safe to assume that the 3478A is in error? Joe Gray W5JG On Sun, Jul 28, 2013 at 5:02 PM, Joseph Gray

Re: [volt-nuts] EDC VS330 Voltage Standard

ite asked that the manuals not be 'shared'. So, if you can't > find one, you might try contacting them. > > Good luck. > > Joe > > > > -Original Message- > From: volt-nuts-boun...@febo.com [mailto:volt-nuts-boun...@febo.com] On > Behalf

[volt-nuts] What really gets calibrated?

I recently had it explained to me that "calibration" is really just checking a piece of gear against a known standard, to see if it meets the manufacturers specification. If it is outside specified values, then it gets "adjusted", not "calibrated". I can see that on the part of the calibration lab

[volt-nuts] (no subject)

I just had a friend buy this for me (I don't have an ebay account). I hope I didn't make a mistake. http://www.ebay.com/itm/Electronic-Development-Corporation-EDC-VS330-VOLTAGE-STANDARD-/161069656213?nma=true&si=PiGtcBMSdSOxgbm9DhiZ6iLo1GQ%253D&orig_cvip=true&rt=nc&_trksid=p2047675.l2557 Of cours

[volt-nuts] Fwd: Old resistors

I know someone who has several of these old style resistors. Can anyone tell me anything about them? Are they of any use? https://dl.dropboxusercontent.com/u/19599147/Resistor%20-%20side.jpg https://dl.dropboxusercontent.com/u/19599147/Resistor%20-%20front.jpg Joe Gray W5JG _