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This version of the time amp is unsafe, I agree. I have since built a safer version with a better person supply. the only modification to this time amp needs to be replacing the bridge rectifier with a single diode. With this modification, as long as you use a polarized cord where the neutral is grounded to the case, the tube amp should be safe.
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This circuit has a very low current flow. Because of the input power of 1.5 watts, I estimate the output current to be about .05 milliamps. This is far below the lethal amperage of 100 miliamps.
I have learned these electrical theories through years of personal study. I have used YouTube and many old books from the sixties to learn what I know. As far as I know, they do not teach electronics in school. It is pretty sad, because it is a very fun hobby that combines physics, math, and good old engineering skills. I agree, many kids and teens do not want to create new things, they just like to play video games and like you said, "Watch". I think that our world would be a better place if every kid tried building things. Thanks for commenting, and by the way, nice pun at the end of your comment!
Yes, a battery would be able to power this circuit. This particular device only draws about 1.5 watts.
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I am indeed. I was wondering when someone would notice that.
Oops, must have been a typo. it is primary. Thanks for letting me know!
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Do you have any broken things that plug into the wall? If you do, then I will tell you where you can find the components in each of them. If not, then I will give you Ebay links to all the parts.
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