Repairing a Broken Metal Detector(Bypassing a Fried Power Supply)
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- čas přidán 15. 07. 2020
- Enjoy this video!
If you have any ideas for future projects and videos, let me know in the comments!
LM317 Voltage Regulator:
amzn.to/398hSSG - Věda a technologie
Hey Tanner- a tip for improving that solder sucker. I’ve got one just like it and I slipped a little bit of silicone aquarium tubing over the front. It gives it a better seal against the board and the silicone doesn’t melt even if you press it right up against the iron.
I have never thought of that, great idea! Time to find some aquarium tubing...
This channel deserves more subs
LM324, RadioShack used to sell those back in the day and I did a lot of electronic projects with them
You deserves my subscription 😊
Wow, that is amazing. I have a lot to learn.
Great jobs
happy your back tanner!
Good job following the circuit. Another tip when you have something shorted or drawing high current, use the current limiting part of your supply and lower the voltage below operating voltage. Replace the fuse or smoked component if it's easy then slowly bring up the voltage while watching the current. Try to keep the current down just enough to follow the heat but not burn anything else out. Sometimes you can feel the components, use an infrared thermometer or camera (if you have access to one) and the heat will show you the component path. Keep at it. I wish I had youtube and the internet when I was your age. That White metal detector is a good one, a prize find. Hang on to it and you'll have it functioning perfectly. I'm sure of it. Keep your eye out for a meter that includes capacitor testing. Also look into a transistor / capacitor ESR tester. Those can be inexpensive. You don't need the most expensive test equipment. There are a lot of bargains out there that will serve you fine.
Nice video Tanner I have four metal detectors
Dope ass channel
This is the best damn intro on CZcams
haha thanks!
Tanner Tech I have a question, I’m building my own capacitor bank for the purpose of blowing things up. Shorting our electrolytic capacitors creates a high current surge that can damage the cap. Would it help to put a very high power resistor in series with the banks output to limit the current?
I have a detector that needs to be fixed. Would you consider fixing it while doing a vid on it? Please DM me with your rate if you decide to take on such a project. Thx and keep up the vids, you did a great job in explaining what all was done and what you used.
Hmm, I am pretty busy right now. What seems to be the problem with your detector?
@@TannerTech I have one too. It doesn't power on, but visually, I didn't see any burnt circuits/components.
Hi Tanner. Looking at the circuit around the µA78S40, I believe it to be a step-up converter. The rest of the circuit are all IC's capable of greater than 5V supply. If you look at the application examples in the datasheet and first figure out whether it is in fact a step-up converter, which I think it is, and figure out the feed-back resistors, you will be able to calculate the actual operating voltage of the device. If it turns out it does operate at a higher voltage and you operate it at that voltage, it will increase the dynamic range and possibly the sensitivity of the detector.
Thanks! I didn't think of that, I am going to have to crack open the metal detector and take a look at the circuit again.
its going to take some time to get used to seeing you older now haha
but doesnt it need the operational amplifier, is the instruments sensitivity affected?
I know about many components (resistors, capacitors, transistors, etc.) but have had lots of trouble figuring out how they all fit together in complex circuits. Do you have a specific resource that helped you learn?
www.allaboutcircuits.com/
This free website is a really good source. I have learned a lot from here. Wikipedia as well. Just start diving into topic and go from there
😊
It would be possible to create a DIY metal detector? would be an intersting project
Klairm, yes using a 556 timer, there's a video on Keystone Science's channel
Great Stuff.....
I have PSM 26 Automatic (similar) metal detector, but my wires conncetion between control (battery) box and where broken (total 5 wires goes to the metal connection port), and I don´t know now which wire goes where .....I was looking online for some kind of scheme, but ended up with nothing.
Your help will be highly apprecited by email, social or anything else really. Thanks!
7:00 actualy you could just use 5v regulator rather than lm317
@Rotten Brainz No, because the voltage output would vary with the current variations in the circuit. It needs a v-regulator. He could have just used a 5v regulator (LM7805), if he had one. The LM317 works fine as well.
You're correct. If he had a LM7805 he could have used that instead.
What about the resistor ?....
Are you still going to MIT?
Yep! It will be digital this semester though
Make a zvs out of induction cooktop. To drive a flyback or a metal heating induction
Yes please do
They require many modifications, because of all the safety features, so he might not make it.
Did you go to a trade school to learn electronics?