Recent content by Gazza1

  1. Gazza1

    current and voltage out of phase

    It is all about the Power Triangle. So the answer is, it depends on what you mean by power. If the current and voltage are in phase, all of the power will be "real" so real power = apparent power or KW = KVA. If there is an inductor or a capacitor in the circuit, the voltage and current will be...
  2. Gazza1

    Question for Electrician or Some1 that knows

    Like the last poster said, there a few factors involved. However,  I would say that could definitely damage them.
  3. Gazza1

    Transformer question

    Im glad some one gets it.
  4. Gazza1

    Transformer question

    The resistance has NOTHING to do with the turns ratio of a transformer. What you are seeing is something totaly different. PIn=POut therefore if you have a transformer that is 5:1 with a primary of 120V and a 60ohm load. The secondary voltage is equal to 120/5= 24V The current is = 24/60 = 400...
  5. Gazza1

    Calculating Total Reactance

    You can do it either way as long and you keep your signs consistent. Example (XT = Xc-XL) The reactance in the circuit is equal to the absolute value of Xc-XL If the value of XT is positive, the reactance is capacitive, if it is negative, it is inductive. If you reverse the formula, the...
  6. Gazza1

    Transformer question

    Resistance has absolutely nothing to do with the turns ratio. What do you mean you use 120Hz?
  7. Gazza1

    AC adaptor help!

    Not to mention the frequency of the voltage is 50Hz in Europe and 60Hz in the USA.
  8. Gazza1

    Transformer question

    I don't think you know what you are talking about. Once you have the turns ratio which is equal to a=V2/V1 or a=N2/N1 You can find the voltage on the opposite side of the transformer. If you have a 240 to 120V transformer, the turns ratio is equal to 120/240 = .5 Therefore if you feed the...
  9. Gazza1

    Power freq 50hz or 60hz issue

    I am going to have to say it will have a drastic effect. Anything with an inductor or a capicitor in it will be affected by a change in frequency.
  10. Gazza1

    Transformer question

    My bad, I read the question too fast. You are 100% correct. If the turns ratio is .5, the output voltage will be half of the input voltage. Which is the case here. My appologies.
  11. Gazza1

    Transformer question

    Do you have a wiring diagram of the transformer? If it has a 50% tap then yes it can, if not, it cannot.
  12. Gazza1

    Allen Bradlet SLC500 programalbe Controller HELP

    Allen Bradley was bought out by Rockwell Automation. The SLC500 is a PLC from the 80's and it uses RSLogix500 for is programming. You also need RSLinx to communicate from the software to the PLC. The software is about $7000 for the package, a SLC is at least $1000. Good find!
  13. Gazza1

    transformer getting too hot.

    The easiest way to do that is to use an oscilloscope, measure the number of divisions between the start and the finish of one sine wave. Multiply that by the S/div and invert :) This doesn't make any sense, there will only be harmonics present if the load is non-linear. Even if there were any...
  14. Gazza1

    Advice on AC motor speed reduction?

    Hey Gruthos, You are right, you need to vary the frequency to change the speed of your motor. I would use a single phase v/hz drive for this. The cap on the top of your motor is a starting cap for single phase induction motors You motor is using approx. 1.5HP, (10.2 x 110)/746 I would just...
  15. Gazza1

    transformer getting too hot.

    wow I didn't read that first post properly, you can short circuit the seconday of a transformer for testing purposes but you have to be really careful about the current getting too high. However I have only ever heard of short circuiting a transformers secondary to find copper losses in the...
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