Cyril Smith AKA Smudge builders group

[bistander]

Hey Bistander,

In a Symmetrical System, Conventional Transformer for example, the Energy Transfer Mechanism is Symmetrical, this means: 1 + -1 = 0, which is Input = Output - Losses = Below Unity

Best wishes, stay safe and well,
   Chris Sykes

Hi EMJunkie,

Efficiency = (output power) / (input power) * 100%.
Example:
Input power = 100 watts, output power = 95 watts.
Efficiency = 95W / 100W * 100% = 95% .
100W went in and 95W came out as useable power. 5W was lost, wasted, converted to heat or however you want to characterize it, but those 5 watts come from the input power and do not end up in the intended output power. 5W are the losses.
So 100W - 5W = 95W. Input power - losses = output power.
Rewrite the equation like this:
100W = 95W + 5W. Input power = output power + losses.

Straight forward.

Attached screenshot from:

https://pressbooks.bccampus.ca/singlephasetransformers/chapter/transformer-efficiency/

Regards,
bi

[EMJunkie]

Hi EMJunkie,

Efficiency = (output power) / (input power) * 100%.
Example:
Input power = 100 watts, output power = 95 watts.
Efficiency = 95W / 100W * 100% = 95% .
100W went in and 95W came out as useable power. 5W was lost, wasted, converted to heat or however you want to characterize it, but those 5 watts come from the input power and do not end up in the intended output power. 5W are the losses.
So 100W - 5W = 95W. Input power - losses = output power.
Rewrite the equation like this:
100W = 95W + 5W. Input power = output power + losses.

Straight forward.

Attached screenshot from:

https://pressbooks.bccampus.ca/singlephasetransformers/chapter/transformer-efficiency/

Regards,
bi

Hey Bistander,

Your example is the same, confirming what I said, just with a different equation: Input = Output - Losses = Below Unity is the same as 95W / 100W * 100% = 95% = Below Unity, same thing!

   1: Input power = 100 watts.
   2: Output power = 95 watts.
   3: Losses = 5 watts


100 = (95 + 5) but in Energy Exchanges, the Energy must always be the same, so: 100 = 100 - 5 = 95 Watts, or 95% or Below Unity. You see? You get this way of thinking about it? All Systems have Losses! So again the Input = Output - Losses!

If you run a series of experiments and benchmark a Conventional Transformer, what I said will make more sense.

Best wishes, stay safe and well,
   Chris Sykes

[bistander]

Hey Bistander,

Your example is the same, confirming what I said, just with a different equation: Input = Output - Losses = Below Unity is the same as 95W / 100W * 100% = 95% = Below Unity, same thing!

   1: Input power = 100 watts.
   2: Output power = 95 watts.
   3: Losses = 5 watts


100 = (95 + 5) but in Energy Exchanges, the Energy must always be the same, so: 100 = 100 - 5 = 95 Watts, or 95% or Below Unity. You see? You get this way of thinking about it? All Systems have Losses! So again the Input = Output - Losses!

If you run a series of experiments and benchmark a Conventional Transformer, what I said will make more sense.

Best wishes, stay safe and well,
   Chris Sykes

Hi EMJunkie,
You say:
"Input = Output - Losses"

Using numbers from my example it is:
"100 = 95 - 5"

Using conventional math:
95 - 5 = 90

What am I missing?

Regards,
bi

[EMJunkie]

Hi EMJunkie,
You say:
"Input = Output - Losses"

Using numbers from my example it is:
"100 = 95 - 5"

Using conventional math:
95 - 5 = 90

What am I missing?

Regards,
bi

Hi Bistander,

No, youre not following the Math.

   1: Input = Output = This says, the Energy Exchange is from the Input to the Output, Output is equal to 100 watts. This an example of an Ideal System, with no losses.
   2: Input = Output - Losses, this says: 100 = 100 - 5, or Input = Output - Losses.


All you need to do is follow the Maths. its self explanatory.

Best wishes, stay safe and well,
   Chris Sykes

[bistander]

Hi Bistander,

No, youre not following the Math.

   1: Input = Output = This says, the Energy Exchange is from the Input to the Output, Output is equal to 100 watts. This an example of an Ideal System, with no losses.
   2: Input = Output - Losses, this says: 100 = 100 - 5, or Input = Output - Losses.


All you need to do is follow the Maths. its self explanatory.

Best wishes, stay safe and well,
   Chris Sykes

Hi EMJunkie,

OK, have it your way. But there are thousands of textbooks and tutorial websites that agree with what I show. Nobody else that I've ever seen, met or heard about does it your way.

Regards,
bi