Thank you thebanano for your feedback and pics. I got proper transformer for Beck's Brain Synchronizer but I need to modify the values of the resistors for 555 timer. As per schematics there is 4.7k from positive rail to the pin 7 and either 1.5M (between pin 2,6 & 7) or 1.5M paralleled with 120k and 50k pot (in series). When in parallel, their combined resistance is between 111k and 160k - depending on the pot. This should provide 5.5Hz. 1.5M alone should provide 5Hz but this is not correct. I'm getting 1Hz with 1.5M and about 13Hz with paralleled resistors. I didn't tested long enough to provide any feedback other than the device works from electronic point of view.
Will continue as soon as time permits.
Thanks everyone for their contribution
V
Will continue as soon as time permits.
Thanks everyone for their contribution
V
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