Piezo item is a fan, run it on 115VAC at 60Hz and it acts as a fan. Was designed as a long life fan, with no moving parts, and with no stray magnetic field.
Anyone else screaming "it's a fan!"? 😂. I saw them first on linus tech tips. Good for long life applications where air flow can be low or just needs to be agitated. Pretty cool.
@@gblargg Non acid free paper, basically barely above newsprint paper. Much cheaper than the fully bleached and acid free paper that you now get, mostly because of the pressure from copier, laser and inkjet printer manufacturers for a paper that was more stable, so it would not jam in printers. So more clay, and all the acid used to bleach it is neutralised before the pulp is sent to the web to become a sheet. Much more expensive though, and also produces a lot more waste the paper mills have to handle, along with a lot of lignin in water, which is often dried with waste steam, and then burnt, along with all the wood trimmings (bark, the bits cut off the ends of logs, the beginnings of the trim with embedded sand) to generate process steam. You still have tons of waste water though, per ton of paper produced.
Never heard of X-band radar being used to measure the level in a large tank but apparently the technology has been around a long time. There's supposed to be a horn on it but I'm sure it was removed for shipping.
These are used where the monitored quantity could not be measured with a float. These will work with solids as well as liquids, but there are limits as to what it can get an accurate return from. These are usually intrinsically safe for flammable liquids like gasoline.
@@paulmcgrath2175 Yeah I think they've become more popular since the 2007 Barton Solvents incident where a float with a bad ground sparked a fire in a tank full of a highly flammable industrial solvent.
@@douro20 19 November 2007 lightning struck an Engen 7 million liter storage tank, which burnt for days. I actually have a video I took that evening trying out a new to me DVcam, which captured that strike from over 10km away.
Look at that orange. It's so vivid. I don't think I've seen anything like it in my life. I just can't stop watching. But enough of the USA elections, let's take a closer look at that Panaplex display.
So weird, I was just thinking about Forrest a few days ago. Im glad im not the only one who was influenced by his work and remembers him. I never hear anyone mention him. I wish I still had all the mini notebooks. I cant even tell you how many times i referanced transistor, 555, and opamp notebooks as a kid starting electronics in the 80-90s.
You could get a cheap pair of +3 reading glasses (to focus at 1/3 meter) and slip them on over your regular glasses. I do this regularly. It means the circuit board you're working on would also be in focus.
Is it just me or does anyone else remember a specific smell the mini notebooks had. Now that I think about it I also remember certain other books having various distinct memerable smells (also scanner frequency guides and semi cross refs)(maybe its just that i dont touch paper often these days, or my nose dosent work like it did 40 years ago). I didnt realize I had a happy place but I wish I could experience 8 y/o me surrounded by the grey Radio Shack parts section wingwalls looking at parts and smelling the referance books nearby. I can close my eyes and remember the exact store layout down to the location of any item in store #01-6640 in the 90's. Maybe a side effect of working there. Long live Tandy Co and Mr. Mims.
Those Panaplex displays remind me of the Numitrons that Technology Connections recently covered. You can tell the Panaplex is far superior though in on/off time, and overall contrast.
@@frogz For some stupid reason, Google, the company that pioneered recaptcha, decided to not use it for UA-cam. Almost like they want bots in the comments.
Panaplex display are nice. I have a few Sperry SP333 devices (3 digits), several Telefunken ZM1350 (one digit, 14 segments) and a few Russian displays (I think around 20 digits 7 segment) over here. Love them...
Engineers mini book is on my shelf... Hi Dave - you are better than "Hey hey its saturday". ( or any dave day ) Both ( mini book & show ) of which no doubt you and I followed when we were young... Thank you for making an old bloke smile... Need Ozzie Ostrich , dicky knee ...
Piezo electric thing looks like speed sensor for bullets? when you shoot a bullet that passes trough 2 sensors and you know the distance between them, then calculating the speed of the bullet.
He'll ya I love that! I have those engineering mini note books! There so good for everyone wanting to learn electronics! I recommend them. U can download them for free if you Google the full books.
At 24:11..... Jealousy makes me nasty. Jip, with multi focal glasses, one for normal use, one for 400mm view, and an additional helping hand magnifying lens and LED headlamp, I can hardly see 1206 components. One day when I am old enough, I will have to get something similar (just turned 60 :) )
Why does a lab microscope contain a battery? That has got to be the stupidest idea I've ever seen in a microscope! Maybe they added a battery so they could charge more for it? No pun intended.
Can be very practical if you want to shortly look at something without having to power all things up and to maintain things when you have power outage (maybe a short on your powerstrip while working ;-) )? My cheap ones do have those too and when I just move them into place from the board above my small desk.... very practical to use so I don't have to hook it up all the time. And yes, no place to keep it on the small bench in my hobby workshop... Of course in longer works, I have to run the cables to it but otherwise I sometimes just charge them up when I'm not using the space for working. I guess for the professionals, well you will have an extra room and workingspace. I have been using a projector (you know on the ceiling or wall) hooked up to a videocamera with macrolens for soldering. Screen of about 1 meter wide... giving a lot of view
Looks like a mighty friggin' awesome book! Something I'd love to read and make a thorough review of like I did with Open Circuits, The Inner Beauty of Electronic Components: ua-cam.com/video/Mqo_sgsdTRU/v-deo.html The piezoelectric sensor looks like something that could be used in industry to detect moving objects and their direction. What surprises me is the color scheme on the wires, as if it was not important which purple wire goes to both sensors. Cute experiments. Wasn't Panaplex a Burroughs trademark? At least that's how I remember it... An idea, couple that panel meter with a LM34 / LM35 sensor. Been there, done it with a Lumel V628 Nixie millivoltmeter: ua-cam.com/video/JOPn50QLiVk/v-deo.html Because not every damn project with Nixies has to be a clock! Geez, I could Keri on ranting about how all they make with those old displays is clocks, clocks and clocks. LOL Tank radar, quite interesting and elegantly made. Beauty! uAll through hole, none of that SMT rubbish outside the T/R module (IMSAI Guy, eat your heart out!) Tomlov microscope looks nice though the image is a bit reddish for comfort; at $310 it's way cheaper than Tagarno, one can live with that. Manual focus is definitely a good feature... you don't wanna know how many times I was pissed off by a camera losing focus. I was wondering if Andonstar has an identical model, but no, it's not there.
What is happening. Dave lose views and turned back to his good old video format? Finally! We've waited for two years for mail-o-bag and teardowns. We don't like whining about solar roads and other obvious crap. Please also reincarnate your short introductional videos with a blackboard, they were great!
Piezo item is a fan, run it on 115VAC at 60Hz and it acts as a fan. Was designed as a long life fan, with no moving parts, and with no stray magnetic field.
And up until fairly recently they were enormously expensive.
Why three terminals?
@@EEVblog i guess it would allow you to connect it to a center tapped transformer
@@EEVblog I have one as well that I got just for fun. Only 2 terminals though!
@@EEVblog2 purple wires are tied together. The blades move opposite of each other.
wow that display has possibly the best contrast and sharpness i've ever seen in a segmented display! beautiful!
Anyone else screaming "it's a fan!"? 😂. I saw them first on linus tech tips. Good for long life applications where air flow can be low or just needs to be agitated. Pretty cool.
I still have my Forest M Mims books from radio shack from 1992!!
Youngster!
The paper darkens a lot. I think I have nearly a full set of those mini books from the late 1980s when I was a kid doing electronics.
@@gblargg Non acid free paper, basically barely above newsprint paper. Much cheaper than the fully bleached and acid free paper that you now get, mostly because of the pressure from copier, laser and inkjet printer manufacturers for a paper that was more stable, so it would not jam in printers. So more clay, and all the acid used to bleach it is neutralised before the pulp is sent to the web to become a sheet. Much more expensive though, and also produces a lot more waste the paper mills have to handle, along with a lot of lignin in water, which is often dried with waste steam, and then burnt, along with all the wood trimmings (bark, the bits cut off the ends of logs, the beginnings of the trim with embedded sand) to generate process steam. You still have tons of waste water though, per ton of paper produced.
I got a pair of those piezo fans, like, over 40 years ago!
Fran's Heathkit clock has those panaplex displays in it 👍
Dave please calibrate that meter and see how accurate it is
Microscope stand: Maybe you could replace the grub screws with knob screws.
Never heard of X-band radar being used to measure the level in a large tank but apparently the technology has been around a long time. There's supposed to be a horn on it but I'm sure it was removed for shipping.
You can see the horn in the supplied photos.
These are used where the monitored quantity could not be measured with a float.
These will work with solids as well as liquids, but there are limits as to what it can get an accurate return from.
These are usually intrinsically safe for flammable liquids like gasoline.
@@paulmcgrath2175 Yeah I think they've become more popular since the 2007 Barton Solvents incident where a float with a bad ground sparked a fire in a tank full of a highly flammable industrial solvent.
@@douro20 19 November 2007 lightning struck an Engen 7 million liter storage tank, which burnt for days. I actually have a video I took that evening trying out a new to me DVcam, which captured that strike from over 10km away.
The business end of the radar is the hole in the bottom where a horn antenna is attached. The aluminum pan is the weather proof top.
Ah, so it is.
Dave, the internal light control is to the left of the power switch! It’s a slide touch control 😂
The piezos are a FAN.. They used to sell those as "solid state cooling fans" for the TRS80 COCO back in the day.. I always wanted one!!
The microscope constantly going out of focus/adjusting focus, or whatever it's doing, is a little annoying
Look at that orange. It's so vivid. I don't think I've seen anything like it in my life. I just can't stop watching. But enough of the USA elections, let's take a closer look at that Panaplex display.
The Forrest book is on Kindle. $18 Canadian. I have many of his notebooks. They made me.
Forest Mims! I remember his little electronics text books from Tandy, back in the 70's & 80s!
So weird, I was just thinking about Forrest a few days ago. Im glad im not the only one who was influenced by his work and remembers him. I never hear anyone mention him. I wish I still had all the mini notebooks. I cant even tell you how many times i referanced transistor, 555, and opamp notebooks as a kid starting electronics in the 80-90s.
I had to immediately order the book! Thanks for the tip!
You could get a cheap pair of +3 reading glasses (to focus at 1/3 meter) and slip them on over your regular glasses. I do this regularly. It means the circuit board you're working on would also be in focus.
My optometrist says they are a bad idea. I have a pair of prescription x1.75 for the lab.
I just came across the sub surface Simon video yesterday! Amazing
Is it just me or does anyone else remember a specific smell the mini notebooks had. Now that I think about it I also remember certain other books having various distinct memerable smells (also scanner frequency guides and semi cross refs)(maybe its just that i dont touch paper often these days, or my nose dosent work like it did 40 years ago). I didnt realize I had a happy place but I wish I could experience 8 y/o me surrounded by the grey Radio Shack parts section wingwalls looking at parts and smelling the referance books nearby. I can close my eyes and remember the exact store layout down to the location of any item in store #01-6640 in the 90's. Maybe a side effect of working there. Long live Tandy Co and Mr. Mims.
I used to do maintanance on those tank level radars. So much fun to trouble shoot old equipment. Inside the tanks were gasoline products etc.
Those Panaplex displays remind me of the Numitrons that Technology Connections recently covered. You can tell the Panaplex is far superior though in on/off time, and overall contrast.
Panaplex is neon discharge, Numitron is incandescent lamp.
@@SeanBZA Yes, but they both have a warm glow to them.
Those are peso electric fans.
Not sensors
Wow, bots got real talking
How dare you assume their non-humanness!
@@EEVblog hmm, ill use capcha next time
@@EEVblog i barely can prove IM human, if the bots are doing a better job at it? ehh...
@@frogz For some stupid reason, Google, the company that pioneered recaptcha, decided to not use it for UA-cam. Almost like they want bots in the comments.
@@EEVblog UA-cam needs a Voight-Kampff test.
That's not a knife 🔪
This is a knife 🗡️
Never gets old.
Panaplex display are nice. I have a few Sperry SP333 devices (3 digits), several Telefunken ZM1350 (one digit, 14 segments) and a few Russian displays (I think around 20 digits 7 segment) over here. Love them...
Internal batteries suck, especially when they're the kind half-filled with sand.
The piezo thing looks like some sort of actuator. I first encountered that tech on moving VCR heads...
They have a resonant frequency. Think crystal.
microscope: get some 3.25 or 3.50 reader glasses and it will work just fine.
Did you touch the white line/sensor and slide the finger on it for the internal light ?
Couldn't you unscrew the connector from RFB on the 10GHz unit, and pull out the cable?
I was thinking that the piezo thing was some sort of iambic paddles for cw communication, using morse code. One paddle for dit, and one for dah.
That Knife 🤣...
Engineers mini book is on my shelf...
Hi Dave - you are better than "Hey hey its saturday". ( or any dave day )
Both ( mini book & show ) of which no doubt you and I followed when we were young...
Thank you for making an old bloke smile... Need Ozzie Ostrich , dicky knee ...
Piezo electric thing looks like speed sensor for bullets? when you shoot a bullet that passes trough 2 sensors and you know the distance between them, then calculating the speed of the bullet.
Total overkill on that level sensor. Ever heard of magnetically coupled float sensors...! And intrinsically safe.
Forced convection Piezo electric fan.
He'll ya I love that! I have those engineering mini note books! There so good for everyone wanting to learn electronics! I recommend them. U can download them for free if you Google the full books.
At 24:11..... Jealousy makes me nasty. Jip, with multi focal glasses, one for normal use, one for 400mm view, and an additional helping hand magnifying lens and LED headlamp, I can hardly see 1206 components. One day when I am old enough, I will have to get something similar (just turned 60 :) )
Why does a lab microscope contain a battery? That has got to be the stupidest idea I've ever seen in a microscope! Maybe they added a battery so they could charge more for it? No pun intended.
Can be very practical if you want to shortly look at something without having to power all things up and to maintain things when you have power outage (maybe a short on your powerstrip while working ;-) )?
My cheap ones do have those too and when I just move them into place from the board above my small desk.... very practical to use so I don't have to hook it up all the time.
And yes, no place to keep it on the small bench in my hobby workshop...
Of course in longer works, I have to run the cables to it but otherwise I sometimes just charge them up when I'm not using the space for working.
I guess for the professionals, well you will have an extra room and workingspace.
I have been using a projector (you know on the ceiling or wall) hooked up to a videocamera with macrolens for soldering. Screen of about 1 meter wide... giving a lot of view
OMG! Is this a backwards video ?
I fear not, at least I haven't seen ElectroBOOM roast it yet.
At 5:36........ Where is the EEVBlog multimeter?????
I think it's other way around it's piezo fan
Hi Dave,
Are you using the ATEM pro to record all sources and edit them later?
please don't accept any pagers from anyone 🙏🙏
Hey hello , can i request for you to look into the Pager attack of Mossad and if possible can you tell how to identify such vulnerabilities
Looks like a mighty friggin' awesome book! Something I'd love to read and make a thorough review of like I did with Open Circuits, The Inner Beauty of Electronic Components: ua-cam.com/video/Mqo_sgsdTRU/v-deo.html
The piezoelectric sensor looks like something that could be used in industry to detect moving objects and their direction. What surprises me is the color scheme on the wires, as if it was not important which purple wire goes to both sensors. Cute experiments.
Wasn't Panaplex a Burroughs trademark? At least that's how I remember it...
An idea, couple that panel meter with a LM34 / LM35 sensor. Been there, done it with a Lumel V628 Nixie millivoltmeter: ua-cam.com/video/JOPn50QLiVk/v-deo.html
Because not every damn project with Nixies has to be a clock! Geez, I could Keri on ranting about how all they make with those old displays is clocks, clocks and clocks. LOL
Tank radar, quite interesting and elegantly made. Beauty! uAll through hole, none of that SMT rubbish outside the T/R module (IMSAI Guy, eat your heart out!)
Tomlov microscope looks nice though the image is a bit reddish for comfort; at $310 it's way cheaper than Tagarno, one can live with that.
Manual focus is definitely a good feature... you don't wanna know how many times I was pissed off by a camera losing focus.
I was wondering if Andonstar has an identical model, but no, it's not there.
Panaplex
Its a 2v range...
What is happening. Dave lose views and turned back to his good old video format? Finally! We've waited for two years for mail-o-bag and teardowns. We don't like whining about solar roads and other obvious crap. Please also reincarnate your short introductional videos with a blackboard, they were great!
Ai killed Aussie star
peace be upon you sir from me
Dave, I'd like to hear your take on the pager shananigans in the middle east. Please do a video
not first
Your videos are always so heartfelt and fun at the same time! Thank you for your ability to bring joy and smiles into our lives!🗻📷🐸
Great choice! This is my must-see content every time.👌 _ 🎧,
I look forward to each of your new videos! You always surprise me with the quality and originality of your content.🤸🍇💬