Author Topic: 10A device in 15A socket vice versa?  (Read 18055 times)

0 Members and 3 Guests are viewing this topic.

Online Simon

  • Global Moderator
  • *****
  • Posts: 18055
  • Country: gb
  • Did that just blow up? No? might work after all !!
    • Simon's Electronics
Re: 10A device in 15A socket vice versa?
« Reply #25 on: July 06, 2020, 11:58:27 am »
As someone who clearly understands very little, what the hell are you doing anywhere near the mains? Just stick to your batteries and 3V light bulbs fore now!
 

Offline vk6zgo

  • Super Contributor
  • ***
  • Posts: 7718
  • Country: au
Re: 10A device in 15A socket vice versa?
« Reply #26 on: July 06, 2020, 12:13:14 pm »
Also, do any of you make money off electronics? Have you ever made a circuit and put it in a case and sold it?

Many of us work, (or in my case, used to work) for a company, or govt department, etc.
Some have their own business, but of these, some sell and/or service stuff made by some other company.

These are quite legitimate ways of "making money off electronics."
Others do make stuff & sell it, but it can be a hard way to make a living.
Quote

Could I make a high quality product with little mistakes and have it made in China and sold around the globe?

With your present level of knowledge, you "don't come within a bulls-roar" of doing that!
 

Offline madires

  • Super Contributor
  • ***
  • Posts: 8175
  • Country: de
  • A qualified hobbyist ;)
Re: 10A device in 15A socket vice versa?
« Reply #27 on: July 06, 2020, 12:55:23 pm »
It's the same reason as why stickers on power strips tell you to not daisy chain them.
 

Offline DokromaTopic starter

  • Contributor
  • Posts: 26
  • Country: au
Re: 10A device in 15A socket vice versa?
« Reply #28 on: July 06, 2020, 02:30:38 pm »
Don't worry guys, I'm not going to play around with mains, I was just wondering what would happen. I am aware that measuring current with a multimeter is dangerous so I haven't done it before. I have used my multimeter though to measure the AC voltage before, I wanted to see if it was going to say 230V or 240V. And maybe I did oversimplify when I meant how long does it take to learn everything, I meant to get proficient at electronics and understand complex circuits, etc.
 

Offline TimFox

  • Super Contributor
  • ***
  • Posts: 8535
  • Country: us
  • Retired, now restoring antique test equipment
Re: 10A device in 15A socket vice versa?
« Reply #29 on: July 06, 2020, 02:43:44 pm »
There is algebra in the real world, but it is all "story problems".  Here's a simple thought experiment:  you can do the sums without a calculator
1.  Assume your electric teakettle has a resistance of 24 ohms (independent of temperature) and you connect it to a 240 V source.  What is the current?  How much power does it dissipate?
2.  Assume your teakettle has a cold resistance of 24 ohms, but when it reaches operating temperature the resistance increases to 48 ohms.  What is the current at the instant when you turn it on?  What is the current after it reaches operating temperature?  What is the power in the two cases?
The resistance numbers were chosen to make the arithmetic simple, but it is true that the resistance of a normal heating element increases with temperature.
3.  What would happen if the resistance decreased with increasing temperature, and why would that be a bad thing?
 
The following users thanked this post: tooki

Offline tpowell1830

  • Frequent Contributor
  • **
  • Posts: 863
  • Country: us
  • Peacefully retired from industry, active in life
Re: 10A device in 15A socket vice versa?
« Reply #30 on: July 06, 2020, 04:49:33 pm »
Dokroma, from your questions, I can tell that you are curious and interested in electronics. However, the problem is that you obviously have not studied and are not familiar with Ohm's Law or have electrical/electronic training. Ohm's Law is the very first thing that you learn when you take a course in electrical/electronics and one of the first courses that are required when you start is electrical safety and CPR training (at least here in the US). Meters have ratings that show the allowed maximums that your meter can safely sustain, so be careful that your meter is rated to measure the AC voltages of your mains. I have seen meters explode when measuring voltages exceeding the meter's ability. This may seem a bit hyperbolic, but mains voltages and current capacities are nothing to take lightly. Over time and experience, you too can safely do this, but training is paramount.

With that said, other comments here are trying to point out the relationships in Ohm's Law that pertain specifically to your questions, which is fine, however, I recommend that you take some structured courses in this field from a qualified school before engaging in the field too much. There are many people that decide to take this up as a hobby and do the basics, watch videos, look on the internet, etc. to learn as much as they can, but, they will tell you that it is not easy or quick. There are many learning videos on YT such as Khan academy and many more, just do a search. Without the structured training background, it will be very difficult to do the things that you are asking about. You have to realize that most of the experts on this forum not only have a 4 year degree (or greater) in this field, but also have many years experience. My only point is that if you are interested in the field, be prepared to do the work, because there is much work in learning electronics.

If you are only casually interested as a hobby, you will still need many hours of study to get started, but, DO NOT forget the safety training, for your own sake (and for your family or those around you). "The Art of Electronics" is a very popular book for the purpose of learning, but you should start with something more basic, like Forrest Mims "Getting Started in Electronics".

Electronics is a fun hobby, and can be a lucrative career, but it requires a great deal of study. If you don't put in the work to learn it, the return will be equal.

Hope this helps...
« Last Edit: July 06, 2020, 04:52:39 pm by tpowell1830 »
PEACE===>T
 
The following users thanked this post: Dokroma

Online Simon

  • Global Moderator
  • *****
  • Posts: 18055
  • Country: gb
  • Did that just blow up? No? might work after all !!
    • Simon's Electronics
Re: 10A device in 15A socket vice versa?
« Reply #31 on: July 06, 2020, 05:53:23 pm »
I would suggest he buys a book on the subject. A forum is not a full education program and it's difficult to have a conversation about anything without some common basis of knowledge.
 


Share me

Digg  Facebook  SlashDot  Delicious  Technorati  Twitter  Google  Yahoo
Smf