Inverting 115VDC to 115VAC. 75watts?

What would be the best low cost method for me to invert 115vdc to 115vac for a low 75watts bench experiment?


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"The 115vdc is comming from a ac/dc 1/15 hp, series wound ac/dc ,5000rpm, motor that I am using as an gererator. I asume that I will produce 115vdc as the shaft turns at 5000rpm's. The voltage the gererator produces I would like to regulate and control to 12vdc."

First, TEST your generator setup with a multimeter or oscilloscope, you don't want to be wrong about what it actually outputs at load, do you?
Second, if it outputs DC (I'm skeptical), Its a waste to convert from DC to AC and back to DC, You would be better off with some AC smoothing capacitors (in case its not a terribly smooth signal) and a tested-voltage to 12v transformer rated for 75w (or whatever else you need) to get the desired output.
Third, test a lot, since I'm guessing you don't want to kill anything important.
 

Don't just listen to me, do your homework!
lemonie6 years ago
Where is the 115VDC coming from, and what do you need AC for?

It sounds like something that shouldn't be done (in this way), but I don't know enough to say why.

L

rpshomeservices (author)  lemonie6 years ago
The 115vdc is comming from a ac/dc 1/15 hp, series wound ac/dc ,5000rpm, motor that I am using as an gererator. I asume that I will produce 115vdc as the shaft turns at 5000rpm's. The voltage the gererator produces I would like to regulate and control to 12vdc.
Use 12DC and a cheap 100W inverter. Building a 1 off 115Dc inverter is not for the faint hearted !

Steve