Jump to content

Electrical mental block


Featured Posts

Brain has filed and cannot retrieve information 

what the formula steps to convert AC wattage to DC amperage .. I know I have to build a loss factor in for inverter etc. 

I can do the i = v/r etc but how to transpose 230v ac to 12 v dc 

brain dead fool 

I need wine 

Link to comment
Share on other sites

1 minute ago, Loddon said:

 

Will it help or confuse you more ?

Thanks j 

1 minute ago, ditchcrawler said:

People say if you work it out as 10 volts DC it allows for the inefficiencies so 1000 Watts is 100 Amps

Thank you I couldn’t remember the average ....

back to calcs 

Link to comment
Share on other sites

14 minutes ago, Chris-B said:

Brain has filed and cannot retrieve information 

what the formula steps to convert AC wattage to DC amperage .. I know I have to build a loss factor in for inverter etc. 

I can do the i = v/r etc but how to transpose 230v ac to 12 v dc 

brain dead fool 

I need wine 

If you think in Watts, then simply decide the voltage you interested in and calculate the current to suit using W=IV.  If going through an inverter or transformer than add on say 10% for losses. 

Link to comment
Share on other sites

2 hours ago, ditchcrawler said:

People say if you work it out as 10 volts DC it allows for the inefficiencies so 1000 Watts is 100 Amps

Absolutely. That might err on being slightly pessimistic but that’s a good thing. 

Link to comment
Share on other sites

I'd be a bit careful about generalising about alternating current.

 

it is very unpredictable and jumps all over the place, one moment this way, next moment that way.  in fact if you are a mathematician looking at the sine wave curve you could persuade yourself that it isn't really there at all.

I was brought up on 4.5v batteries that I put in my bicycle headlight - much easier to understand.       :rolleyes:

Link to comment
Share on other sites

2 hours ago, Murflynn said:

 

I was brought up on 4.5v batteries that I put in my bicycle headlight - much easier to understand.   

 

All my youthful electrical experimentation was powered by those Ever Ready 4.5V batteries with screw terminals on the top.

battery_126_1434333.jpg

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
  • Recently Browsing   0 members

    • No registered users viewing this page.
×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.