I just got the same model from a friend. His has been in his attic for maybe 50 years. I appreciate seeing exactly how to bring it up slowly, as so many recommend. I didn't see a followup video in your listing. Can you reply with a summary of further work you did on this scope? Thank you.
@DVRproductions523 күн бұрын
Sure Duane, After making sure it would stay running for an hour or so, I went in and tested all the tubes. (They were all original and GOOD). Then I unplugged it, discharged all the electrolytic caps with a 100 ohm resistor. I went through and quickly checked the resistors in circuit (you can do that on vacuum tube devices without having to desolder one side. After replacing all the out of tolerance resistors I started replacing all the capacitors. I left the disk caps in there since they rarely go bad. I had most of the Electrolytic & paper capacitors in stock but not the high voltage (1500 Volt) ones. I was able to get those through Mouser. After replacing all those capacitors I just went through the alignment procedures according to the Heathkit manual. Very easy and enjoyable restore. If you have any more questions don't hesitate to ask. -- Good luck! ...Dean
@wdmm948 күн бұрын
Great video. These couple of videos show "isolation" labeled products that one has to be very careful with. I guess this shows how one has to be careful with wording and verify in practice. Tripp Lite "isolation" transformer. kzfaq.info/get/bejne/g55keKuLms60cZc.htmlsi=xYoBQZtPcpm_Q_j2 "Variac with isolation transformer" kzfaq.info/get/bejne/btVne9d4udympnU.htmlsi=9kedZK-sP8bzlcbS
@DVRproductions527 күн бұрын
Yup, you really need to investigate some of these products. The drawing at the 11:50 mark shows it all. You just removed any isolation from the power grid with that jumper!
@Keepitreal26020 күн бұрын
Hey, thanks a lot for taking the time to explain everything in such detail and with great demonstrations. This is definitely one of the best safety videos I've ever watched. I really appreciate it.
@WestviewChurch19 күн бұрын
Thank you! I appreciate that.
@MasonMazak2 ай бұрын
what does it even do i dont understand the point of it and im trying to figure it out, if you anyone can tell me what its for that would br great thank!
@DVRproductions522 ай бұрын
Hi Mason, the primary function of an oscilloscope is to display a graphical representation of electrical signals as waveforms. The horizontal axis (X-axis) typically represents time, while the vertical axis (Y-axis) represents voltage. Oscilloscopes are invaluable in troubleshooting faulty circuits. By observing the signal, you can identify issues such as signal noise, distortion, and unexpected signal behavior. Hope this helps you understand the value of an oscilloscope.
@OneBiOzZ2 ай бұрын
Super helpful! thank you!
@DVRproductions522 ай бұрын
You're very welcome!
@DVRproductions523 ай бұрын
Reply to Erik Burman: The human body's resistance varies widely depending on who you are, what your body chemistry is and most importantly, if your skin is moist or sweaty (usually with a lot of salt mixed in). It only takes a few milliamps of current to seize muscles or stop the heart from beating. So yes, there are a lot of variables.
@ccdd50743 ай бұрын
Very interesting. The best clip on youtube with curve tracer. I have a function generator, including the sinusoid with a maximum amplitude of 24v. Could I replace the 24 V source with the sine wave generator ? I think, I could control the frequency and amplitude. Thank you.
@DVRproductions523 ай бұрын
You probably could as long as your generator had enough current & voltage to trigger the junction and show up on the scope. Worth a try to see how frequency effects the "knee" point.
@ccdd50743 ай бұрын
@@DVRproductions52 Thank you. I will try and let you know the result.
@DVRproductions523 ай бұрын
@@ccdd5074 I'll be a following!
@jeremiahchamberlin44993 ай бұрын
Thanks for sharing a very clear schematic of your setup. This is about the fifth video on this topic I’ve watched today (and the last). But you’ve inspired me to get cracking on building my own; I believe I have couple of old AC voltmeters and ammeters laying around the shop, I didn’t realize I was saving them for this project.
@DVRproductions523 ай бұрын
You're very welcome, hope it all works out good for you.
@ptrooms3 ай бұрын
Thx very much for explanation en guidance. Recently, I got one (IBM version) and very happy with it as it brings me back to the times of good history. It came with a DB (decibell) adapter which could plugged in on top using the 0.6mA scale.
@DVRproductions523 ай бұрын
Right, I have my Db adapter around here somewhere as well. Probably still in my old service case.
@faceboxtv47893 ай бұрын
What is the formula to calculate the bulb wattage needed related to the device?
@DVRproductions523 ай бұрын
That's always a good question. I tend to use 2 to 3 times the wattage of the device under test. So if you're doing a 50 Watt radio, try a 100 or 150 watt bulb. If the voltage drop is too much and you can't get enough voltage to the radio, (and you know there are no problems with it) try a higher wattage.
@nortonics57455 ай бұрын
How many times did you mutter the sound "uh"? I'll tell you - a pathetic number of times.
@DVRproductions525 ай бұрын
Yeah, it bothers me too and I'm trying to do better at that.🙄
@erguy63195 ай бұрын
Great video, thanks. I have a same signal generator, and try to calibrate it. I had the R9 adjusted to 6V and calibrated all A to F bands without much trouble. But I can not get the wave form on oscilloscope for 455 khz and 10.7 Mhz sweep. Read the instruction which is not quite help since the way it did need crystal. I do have frequency counter. My question is can I calibrate 455 kHz and 10.7 MHz with the frequency counter (with the Modulation switch in Ext without any signal input) instead the wave form? Thank you in advance.
@DVRproductions525 ай бұрын
You only need the crystal if you want a marker to appear during sweep mode. The 455 Khz. signal is adjusted using L7 (See Pg. 42 of the manual), L8 for 10.7 Mhz. You should be able to calibrate using a freq. counter. Actually, the dial of the RCA is so far off that you'd probably want to use a freq. counter anytime you use the generator just to be accurate. -- The direction manual IS kind of confusing especially when it comes to where to set the MOD & VFO switches. I just had to fiddle with the settings to get the output I wanted. Later I'll try and see what the proper sw. settings are to cal. the generator and get back to you.
@erguy63195 ай бұрын
Thank you very much for your reply. I will try to calibrate the L7 and L8 with frequency counter, then try the RCA on some transistor radios. By the way, when I read the manual, it mentioned the original testing cable has a 0.001 pf 500 V cap built in, so I soldered a 0.005 pf 1000v cap that I have before the BNC output. @@DVRproductions52
@jimw7ry5 ай бұрын
100 or 200 watts is way to high for low current devices like AA5 radios. Just sayen?
@WestviewChurch5 ай бұрын
Yes, you are right. a 60 watt bulb would be safer and I do change that bulb depending on the device under test. I use a 200 watt as a standard to detect catastrophic short circuits. I still use the 200 watt on larger devices like high powered guitar amps.
@bofor39485 ай бұрын
Put a suitable sized Jubilee clip (hose clamp) round the top of the capacitor and tighten to protect the aluminium from the side cutters. It will also help keep the top round as unlike the sheet metal held by hand there will be no gaps and it won't slip. Ah! see you saw that idea later in the video. One other thing you mentioned you have a polishing wheel. If you can substitute that wheel for a plain steel wheel or if you have a lathe you can set up a support bar to help hold the can tight against it while pressing and turning against the wheel to press the peeled metal back smoothly. I have stuffed several this way with good results.
@DVRproductions525 ай бұрын
Ohhhwww... I like that idea. Can't believe I didn't think of that when I was just inches away from a whole drawer full of hose clamps! -- Duh.
@raulmontesdeoca78435 ай бұрын
Do you have the amphenol leads ?
@WestviewChurch5 ай бұрын
I'm afraid I do not. Also, since then I manage to drop the whole thing and broke the case rather badly as well.
@DVRproductions525 ай бұрын
That reply was from me not from WestviewChurch. Sorry, I was logged into the wrong account.
@RobertoColi5 ай бұрын
Just finished to build it. 😁 I struggled for soldering the thick cables, design the panel, and design the BOX. The panel was done in Inkscape with a special extension, Scale, that creates simple gauges like MeterBasic, but since you are already in a vectorial app, then you can change the design as you want. I had to print and scale it a couple of times since once printed on the LaserJet, 1 cm on video was not 1 cm when printed. The box was designed in CAD and 3D printed, unfortunately only after I printed it, I realized that the data sheet with the drawings of the amperometer with holes and screws quotes, were completely wrong! I preferred to file so parts and do some drills on the box instead of change the CAD design and reprint it correctly, since it has to be used only once, and the manual holes were covered by the milliaperometer. I had also troubles to solder the thick cable even with a TS100 solder and the fattest iron. After the some mandatory soldering I switched to screw contacts for the following joins. However it looks very nice, and it seems to work fine also. I discovered that almost all my rechargeable batteries are still good. 😉
@DVRproductions525 ай бұрын
Nice technique there Roberto. Sorry you had to do so much trial and error but I guess that's the way the hobby is when you're "Rolling Your Own". I just used my ESR tester this morning on a couple of 20 year old batteries that are still showing less than 2 ohms ESR! They don't seem to have the shelf life between charges as a new Eneloop but they will do in a pinch.
@raulmontesdeoca78435 ай бұрын
Just bought one on EBay for 11 bucks. Maybe I’ll need some parts.
@DVRproductions525 ай бұрын
I still have this one if you DO need some parts.
@raulmontesdeoca78435 ай бұрын
I’ll let you know when I go over it. Thanks.
@qzorn44405 ай бұрын
Very interesting, nice and simple. 😎 Thank you.
@bigio59366 ай бұрын
Hi, this is not the way to restuff old capacitors: this is the way to destroy them,I have no channel on youtube, but if you want I can send to you images where I can show the way I usually restuff old capacitors on vintage electronics. Actually I am recapping a old Mcintosh MX110 (the Medium Version, without 6D10 Tube 1962/1963) and i'm not destryng the can.
@WestviewChurch6 ай бұрын
Would love to see them!
@ohger16 ай бұрын
I take my Dremel with a high grit stone and grind down the bottom of the can until I expose the steel ring. I then pull that out and remove the guts reusing the phenolic base. I reassemble by putting some two part black epoxy on the inner lip and placing the phenolic and steel ring back in place.
@ohger16 ай бұрын
Restuffing cans is the best option. I restored a 1951 Andrea 16" TV that had nine (9!) cans. Imagine putting terminals and external caps for nine cans inside that already crowded chassis. 30 years after I'm gone, some guy will be thanking me for not turning that chassis into a train wreck. Other than the plastic caps replacing the paper ones, it looks like it did when it left the factory and still matches the picture in the SAMs.
@SuperVorticon6 ай бұрын
Great video, but please get rid of this annoying background sound track. Incredibly annoying and distracting and your presentation stands great by itself without the need for some questionable audio "enhancement".
@DVRproductions526 ай бұрын
Yeaaaah, I was just feeling whimsical that day & thought I'd try something fun and different. Probably won't do it again though. 😁
@shanejohns79016 ай бұрын
This thing is more like a grenade than a capacitor! It's a bit crazy to see a capacitor that large yet without any of the stress grooves in it that give away to let it explode more safely out of the top.
@WestviewChurch6 ай бұрын
These types almost always vent out the bottom around the phenolic. Sometimes you'll even see a small hole or thin spot where the electrolyte or gasses can vent.
@nevisstkitts82646 ай бұрын
1:18 also bond vs Jaws on the train, electric bulb electrodes to the dental work, classic ...
@James_Bowie7 ай бұрын
$2 for a 350VA isolation transformer? $5 for a metered Variac? Bargains of the century!
@ludmilascoles11957 ай бұрын
It is called 'The Dark Effect'
@DerekHerbst7477 ай бұрын
For accurate calibration you have to pass 50 microamps through the meter and set the needle deflection to full scale using R2. You then measure the resistance between the input to the meter (left side of R2) and the far side (right side) of R1 and adjust R1 until you have 5k ohms exactly. That is DC and Ohms calibration done. Then you can test accuracy on all ranges for full scale deflection using a reference DC source. If there is any inaccuracies the prescaling resistors need to be checked. Once that is done you can calibrate AC volts using a known AC voltage for full scale. Once again the prescaling resistors values will affect meter accuracy.
@DVRproductions527 ай бұрын
Thanks Derek, glad your post is here for future reference. Those instructions I got were very confusing, yours are much better!
@DVRproductions527 ай бұрын
You're very welcome, thanks for the comment!
@Homer195217 ай бұрын
Great vid. I just sold mine last year & you made me regret that a bit. I never cal'd the sweep part so that was very helpful. 👍
@mikeg81387 ай бұрын
😱 "Promo SM"
@user-dy2xu3uv8k7 ай бұрын
Hello how much is a good price for a working Simpson 160 with the original case and manual in great condition? Just wondering so I don't over pay as I'm looking to pick one up. Thanks for the video and your time!
@DVRproductions527 ай бұрын
Ya know I'm not really sure. I personally wouldn't give over $30 US for it.
@rajive677 ай бұрын
Hello, Great video! I was wondering whether you know the size of the Allen Wrench I need to use to remove the selector knob screw?
@DVRproductions527 ай бұрын
Good question. I was going to check then I realized I would have to take it all apart to find your answer. I would start with standard imperial size allen keys then try metric keys. Beyond that, I supposed they could have used "Bristol" wrenches since this is branded an IBM product. IBM was really into Bristol wrenches because they were used a lot in their typewriter line.
@PeterMilanovski8 ай бұрын
I watched someone age's ago print out a picture on paper using an inkjet printer, soaked in water I think and applied it to a tin coated piece of sheet metal and it looked amazing! The video had nothing to do with electronics but I could see how it would be perfect for electronic enclosures.... Haven't needed to do it myself yet but I have never forgotten the video, I can't remember what the video was called or who posted it but for some reason I was watching art videos which is standard practice for a polymath like me... I'm always watching random videos or reading random stuff... You only ever need to remember seeing something somewhere and you will find the information when you need it, sometimes you remember more while other times less but you never forget that you know something about the topic that you are currently working on.... Great effort in this video! Pretty underrated considering the amount of view's this channel is getting.... Thanks for posting 😁.
@DVRproductions528 ай бұрын
Thanks Peter, I have the same problem, I see some really great ideas and hacks out there but when I try to find them again, they're gone! Thanks for the channel kudos!
@kannzisakamoto48568 ай бұрын
I'm a beginner, but I tried making it. I am thrilled that it was a success!Thank you!
@DVRproductions528 ай бұрын
Thank you for your kind words Kannzi. I just used mine again last week to identify an unmarked zener diode. Glad you were able to build it without any problems.
@1873Winchester9 ай бұрын
Never actually seen a transformer like that anywhere where I live (finland), I only recall having seen a few large stations that took up the space of a house and a yard, wired off with large metal fences and lots of buildings and electrical equipment, whole place makes a hummmmm sound. One station serves many thousands of households.
@DVRproductions529 ай бұрын
Most of the ones I've seen here is the U.S. don't have the enclosed "Bell" ends or they are built into an enclosure with various voltage "taps."
@noneofabove55869 ай бұрын
The 9 volt battery has 6 cells in series. esr per cell would be - meter reading and divide by 6.
@DVRproductions529 ай бұрын
True, assuming that all the cells exhibited the same ESR. However, there would most likely be (1) that was way high in ESR where the others would not. It would still indicate an overall high ESR for the whole battery.
@ivolol9 ай бұрын
Putting 12V randomly into board points could blow a lot of things up in modern parts...
@WestviewChurch9 ай бұрын
Yes, it sure can!
@Pulverrostmannen9 ай бұрын
What is important to note is that most variacs have no isolation at all, one side of the output always gonna be live of it and the other just tapped voltage from it pretty much, you want to use your isolation transformer if you measure anything in live voltage to protect your scope. I got my big Variac first actually way back in time but later I got a very big nice isolation transformer that even have virtual ground. I put a switch on the ground circuit to be able to run either isolated live without ground or together with virtual ground. it is a great thing to have if you were to work on a tube radio that works without both ground and transformer, yeah the death radios and I don´t like them. but you never get better than your tools I always say, but your tools also don´t have a brain you you have to use your own. Just because you have fancy isolation and variacs you won´t be completely protected which you always should have in mind. Don´t put too much trust in your extra safety
@typhoon1j9 ай бұрын
Hello- thanks for the video. I ordered a new cover for my meter and it did not have the anti static coating. Can you recommend a spray for this problem? - Phil
@DVRproductions529 ай бұрын
I have heard that a 50/50 percent solution of Downy Fabric Softener and water sprayed on the inside of the meter face may eliminate the static buildup issue.
@Pulverrostmannen9 ай бұрын
I built my tracer a couple of years ago and I made it with two pots which is for both variable output voltage and variable current, this way I can really tweak in the reading parameters I want to get without the need for different input voltages of the octopus, it is a very useful tool to have when you need it
@bahramsoroush22289 ай бұрын
THANK YO FOR SHARING.
@myintnaing247010 ай бұрын
Thanks for your nice video.I also have got this type of ic. l may try it.
@DVRproductions5210 ай бұрын
I'm finding more and more uses for this than my adjustable, regulated bench supply. It's great for charging batteries & testing for dead LED's in bulbs, TV backlights etc. -- You don't need to know the working voltage of the device under test either. Just short the leads, set it for 15mA & test away! It doesn't matter if there is just (1) or (15) LED's in series, the current remains the same throughout the whole string.
@WPF465B10 ай бұрын
Great project, well done!
@DVRproductions5210 ай бұрын
Thank you. I just used it yesterday to find a dead LED in a TV backlight string. Short the leads, set it to 10 Milliamps and start probing. No matter how many LED's were in the string it still sources only 10 Ma through the whole thing.
@lmwlmw446810 ай бұрын
Nice project.
@joehowe902010 ай бұрын
COOL VIDEO ℹ LOVE OLD RADIOS 📻 I JUST SUBBED TO YOUR CHANNEL I TYPE IN ALL CAPS BECAUSE OF MY BAD EYESIGHT NOT YELLING JUST TO LET YOU KNOW
@DVRproductions5210 ай бұрын
Hi Joe, welcome to the Channel! Looks like your eyesight is in the same shape as my ears!
@tomstrum625911 ай бұрын
Thx for informative video.....New fresh 9 volt Alkaline Non--Rechargeable batteries Most Designed for < 100 ma Load, contain significantly Less internal Chemical Paste & Electrode area per Cell (Compared to 1.5 volt AAA--D size batteries) naturally causing much higher ESR & Trying to source 1000 ma test Current draw into your 10 ohm Load resistor.....A switchable load Resistor of 100 ohms (For 9 volt Alkaline) to 10 ohm for 1.5 volt battery would Probably be more Realistic (And potentially Less overload Damaging) for 9 volt Alkaline batteries.....Just a thought on tweaking your Excelent diy ESR battery Quality tester design......
@hullinstruments11 ай бұрын
I do a lot of troubleshooting and repair of test gear and metrology equipment. A good variable frequency ESR meter is an absolute must for quick fault finding on circuit boards. In circuit testing is unparalleled in quickly and accurately narrowing down the possibilities. An esr meter can test a lot of things other than just caps. I think the "diode gone wild" did a few videos where he showed off some techniques, and so did "learn electronics repair". And an analog scale is pretty hard to beat in some instances. So I could see this really becoming popular with the DIY and even professional electronics troubleshooting folks
@hullinstruments11 ай бұрын
And I really like the setup of your bench.
@hullinstruments11 ай бұрын
Been hoping for some good esr testers with analog display. Very nice design. Possibly a future upgrade to allow for a range of different test frequencies.
@DVRproductions5211 ай бұрын
I may just do that later on by making a 2nd terminal strip (so I wont need a rotary switch) then create a new dual meter scale to read the new load results like (1) for AAA to 18650 and (1) for various 9V batteries.
@hullinstruments11 ай бұрын
I do a lot of troubleshooting and repair of test gear and metrology equipment. A good variable frequency ESR meter is an absolute must for quick fault finding on circuit boards. In circuit testing is unparalleled in quickly and accurately narrowing down the possibilities. An esr meter can test a lot of things other than just caps. I think the "diode gone wild" did a few videos where he showed off some techniques, and so did "learn electronics repair". And an analog scale is pretty hard to beat in some instances. So I could see this really becoming popular with the DIY and even professional electronics troubleshooting folks
@jeffreyyoung410411 ай бұрын
I was a victim of counterfeit batteries. I bought a pack of AAA cells for remote controls, and my remote died way too soon, and the batteries leaked as well. I checked the pack of batteries, and they were also corroded, yet they had ten years left on the use by date! But comparing the failed pack of batteries to a new pack, I saw the difference right away! Sadly, I don't remember where I had bought them, but I suspect they came from Walmart. I have had trouble with pop cans from Walmart as well, and I really look at the products before I buy anything from there, and I don't shop there unless absolutely necessary. You can print anything your printer is capable of on plastic or plastic coated papers available for printers. But the best method for me has been the transfer paper! If you have ever built models and painted them, you would be given a set of transfer decals to apply to the model. Well, you can buy the same paper, and use it, but you need waterproof ink to use with it. The transfer paper allows you to paint the metal plate any color you desire and apply the decal to the plate! I would not print the background on the decal, as it doesn't look as good as painting the plate, at least that has been my experience.
@DVRproductions5211 ай бұрын
Yeah it's so easy to do now that you really gotta watch out every time you buy something. I saw an article from Mouser a while back saying that almost 30% of parts on the market today are fakes and how they (Mouser) try their level best to market genuine products.
@KeriRautenkranz11 ай бұрын
One could paint the backside of the original metal scale with Dye Sublimation coating, then heat press the artwork right onto the metal.... people that do a lot of Dye Sublimation could do it for you.
@DVRproductions5211 ай бұрын
Now that's interesting. I'll have to do some research on that process. Sounds like I might have a new way to letter my projects. --Thanks Keri!
@KeriRautenkranz11 ай бұрын
@@DVRproductions52 You're welcome! Another idea is to use pre-coated metal blanks meant as inserts for sublimation smartphone cases... the metal is so thin it cuts easily with scissors. then you just have to get the special dye sub ink printed backwards on some transfer paper and iron it on at high temperature. I have made many things in this way.... they're practically indestructible. If you search Vinyl Engine for "P91 Multi-Standard Phono Preamp" you will see an example.
@DVRproductions5211 ай бұрын
I'll def. look into that process. Sounds very intriguing!