Hi Kiss,
Just one question before I forget, with back to back SCR's as you have mentioned, do you fire one SCR for the Positive half wave & then the other for the Negative half wave.
Is that how it works, just interested to know!
Yes, I see what your saying with current limiting & also working with not enough good equipment to do the job properly, it makes things hard & a real headache.
Yes, of course the project is about controlling the Universal motors, I just thought that if I can control something small on the bench first & get all my set point circuits made properly & everything operating as it should I can then setup the Universal Motor control easily.
This would allow me to have a relatively relaxing time with minimal noise & excitement so to speak, as you know the universal motors are full of noise & vibration.
At the moment I am still inside at my work table & something small & quiet would be good to learn from.
What do you think?
Cheers