The relays won't cost me anything because I don't need them.
I don't need to buy relays, the relays will exist at whatever device I am trouble shooting with my tool. The relays I mentioned are only target test relays.
I answers I seek, and to go through all this to feed a AC relay might sound "silly" but thats because the final purpose of this circuit is not known to anyone but me.
I am creating a tool to achieve certain dignostic functions and this tool HAS TO BE Handheld, Portable, as small as possible...to hold with one hand.
My greatest enemy is size for what I am trying to do.
Of course there are dozens of ways of doing this if size is not a condsideration, I can buy store inverters, modify them, or... I have seen an inverter with pure sine wave with a 24VAC output for 100 bucks, but bulky and would defeat the my purpose.
Thats why I love the world of electronics, you can make your own customized..... invent, change, expand, use your imagination until your vision is created.
I know a small inverter can be built, I have seen the different possible circuits blocks, I will just have to figure how to put it all together for my purpose.
The transformer is what is the killer, but doable for I only need 20-25Watts of output on 24VAC......if I go that route...but I believe I will try to go transformerless first.
I have heard that there are ways to go transformerless.....feed the whole thing with 38DCV (Which is the peak of 24VAC RMS, isolate this high voltage from whatever I will use as an oscillator, and not need to step it up at the end. (light and powerful battery power is not a problem to me)
I just have to figure out a good circuit to shape the wave to a nice sine wave...and everything thing else the circuit needs in between.
No, its not easy I know, and one can't just whip up a circuit like this.....but I will set up my mind to research until I can put all this circuit blocks together in perfect harmony!!!!
And when done...I will post the final, tested circuit on this thread and it will be up for grabs.
Thanks for everyones input, and bearing with me. I truly have learned a lot.