so my meter isn't a needle in the centre its at the left side when I connect the probes and push a magnet toward a coil, am I looking for deflection to the right and whichever the positive probes wire it's on is the positive lead of the coil? just making sure my new coils have arrived waiting on the ferrite rods
Yes.
The L2 and L3 windings are short-circuited in your schematic.
The inductance of a transfomer winding varies as the square of the number of turns. So for a transformer with a 5.75:1 voltage ratio the inductance ratio of the windings will be 5.75^2:1 = 33.1:1.
Do you know the winding inductances of your transformer? If not, googling for properties of a similar size transformer may give some idea.
Bear in mind this is only a simulation, using fairly arbitrary values.
The inductance of a transfomer winding varies as the square of the number of turns. So for a transformer with a 5.75:1 voltage ratio the inductance ratio of the windings will be 5.75^2:1 = 33.1:1.
Do you know the winding inductances of your transformer? If not, googling for properties of a similar size transformer may give some idea.
Bear in mind this is only a simulation, using fairly arbitrary values.
I bought a new 8 : 1 transformer because I got the wrong one the L3 represents the motor I will be running, it's a 15watt motor, someone helped me with it a while back, forgotten who! the new one I have bought is 30v to 230v! and is rated at 120watt the 15watt motor is an oven fan motor 230v 15watt
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here is the data sheet for the new one https://www.farnell.com/datasheets/3964075.pdf
mine is the: VTX-146-160-115
nothing about inductance or turns I remember the reason that the man who helped me put an inductor was because a motor winding is bassically and inductor!
https://www.amazon.co.uk/dp/B00ID6AIZK?psc=1&ref=ppx_yo2ov_dt_b_product_details
mine is the: VTX-146-160-115
nothing about inductance or turns I remember the reason that the man who helped me put an inductor was because a motor winding is bassically and inductor!
https://www.amazon.co.uk/dp/B00ID6AIZK?psc=1&ref=ppx_yo2ov_dt_b_product_details
how does this help not being sarcastic I can't see the relevence, thanks I recon it's got something to do with the spice program!
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The inductance ratio in the Spice program will affect the output voltage in the simulation.
You don't (if the tranny spec doesn't give it), but as I said in post #366, "googling for properties of a similar size transformer may give some idea".
The more parameters you know and apply the closer the sim result to the real world. But guestimates should put you in the ball-park.
getting someone to email vigortronix for me the inductance primary and secondary, secondaries wound together in series (black and yellow tied together), resistance's of the primary and secondary max currents winding numbers on both primary and secondary and then the coupling factor!
Judging by this article, accurate simulation of a shaded-pole motor would be tricky. I'd just use an inductor with appropriate inductance and resistance parameters.
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Try 1.3H, 50 Ohms. These give about 15W on a 230V rms 50Hz supply, but may be some way off realistic values.
Edit:
Try 1.3H, 50 Ohms. These give about 15W on a 230V rms 50Hz supply, but may be some way off realistic values.
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Hello,
Here is a page that explains the ratios of a transformer:
electricalacademia.com
Bertus
Here is a page that explains the ratios of a transformer:
Transformation Ratio of Transformer | Voltgae, Current, Impedance Ratio
This article covers various transformation ratios of a transformer such as voltage (turns) ratio, current ratio, and impedance ratio (matching) in detail, along with solved examples.
electricalacademia.com
Bertus
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