Awesome video as always! Something I wanted to add that is commonly asked of me is if "My project requires 200mA but all I have is a 2A, will that burn up my project?" No, it's generally ok to use the bigger wall wart. The rating on the wall wart is "supplies up to x amps" and the rating on the project means "I need to draw up to x amps." As long as the amp rating on the wall wart is greater than your project, you're cool. :) If you're really worried about it you can use a fuse rated for +25% , eg a 200mA project case needs a 250mA (1/4A) fuse.
Thanks for another informative video. Though I've used a multi-meter for years, I still learn something new about them all the time. I hope you do a video in more detail on multi-meters.
This is a bit 'out in the weeds' but if you like to listen to shortwave radio or have a favorite but distant AM radio station, these wall warts introduce a huge amount of electrical noise and can literally blanket any radio signal that you want to hear. Computers, monitors especially as well as cable boxes are huge offenders also. Not a problem for FM reception
Well this interesting. If I need more current or amperage for a project could I just say use two of the same voltage transformers and put them in parallel? Would this help and not have the transformer burn out? And you are right I too have a whole box full of these things. Your information is very helpful indeed. Thank you. The heat here in east Tennessee is getting a little less intense now and it is time to get outside and get the outside work going. Have started on some siding repairs and it is quite pleasant working again. Have a good week end and will be looking forward to your video next week.
@@PartScavenger Thank you PartScavenger, I was just thinking it would make a variable amperage power source. But I surely don't want a fire hazard....not worth that. Your advise is appreciated.
Using two would technically work but would not be the best idea. If one of them fails, disconnects, ect it will overload the other one and burn them both out. Also there is nothing built in to level the load between them so if one has more resistance more power will flow through the other one overloading it. Usually it just burns them out but could cause a fire. Glad your weather has improved. I'm still waiting. Fall is my favorite time of year.
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Awesome video as always! Something I wanted to add that is commonly asked of me is if "My project requires 200mA but all I have is a 2A, will that burn up my project?" No, it's generally ok to use the bigger wall wart. The rating on the wall wart is "supplies up to x amps" and the rating on the project means "I need to draw up to x amps." As long as the amp rating on the wall wart is greater than your project, you're cool. :) If you're really worried about it you can use a fuse rated for +25% , eg a 200mA project case needs a 250mA (1/4A) fuse.
Good point. Thanks for sharing!
Thanks for another informative video. Though I've used a multi-meter for years, I still learn something new about them all the time. I hope you do a video in more detail on multi-meters.
I'll have to work on that. Thanks Mike!
I need to know how to test an ac output with only 3 wires. Blue yellow and red. There is no green nor white
This is a bit 'out in the weeds' but if you like to listen to shortwave radio or have a favorite but distant AM radio station, these wall warts introduce a huge amount of electrical noise and can literally blanket any radio signal that you want to hear. Computers, monitors especially as well as cable boxes are huge offenders also. Not a problem for FM reception
very true!
Yeah always good to remember when you have a hum in an audio system. It could likely be a wall wart too close to some audio wires.
Well this interesting. If I need more current or amperage for a project could I just say use two of the same voltage transformers and put them in parallel? Would this help and not have the transformer burn out? And you are right I too have a whole box full of these things. Your information is very helpful indeed. Thank you. The heat here in east Tennessee is getting a little less intense now and it is time to get outside and get the outside work going. Have started on some siding repairs and it is quite pleasant working again. Have a good week end and will be looking forward to your video next week.
Glenn - While doable it is not recommended to split loads with wall warts.
@@peterhaan9068 Thank you Peter, I would have made that mistake. Your advice is appreciated.
Glenn, I am an EE and I agree with Peter. It is possible, but it is a fire hazard. Cheers! :)
@@PartScavenger Thank you PartScavenger, I was just thinking it would make a variable amperage power source. But I surely don't want a fire hazard....not worth that. Your advise is appreciated.
Using two would technically work but would not be the best idea. If one of them fails, disconnects, ect it will overload the other one and burn them both out. Also there is nothing built in to level the load between them so if one has more resistance more power will flow through the other one overloading it. Usually it just burns them out but could cause a fire. Glad your weather has improved. I'm still waiting. Fall is my favorite time of year.
Useful-
Thanks!
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