Feedback To Source

[nievesoliveras]

@ Jesus:

Look at it this way.  If you fried the transistor it means you are getting TOO MUCH power fed back into your circuit.  With my knowledge being at a novice level in electronics, my guess is that you either need a heavier duty transistor or a larger resistor in line to protect the transistor.  So, (again I am guessing here) when your motor ran for just those few turns, it made enough power to burn up you transistor meaning to me that this is the direction you were looking for.

In other words, I see this as an encouraging accident, not a set back.  But, I understand about the expense part.  Maybe scale everything down and work with lower input energy?

Best of luck to you.  Whatever you do, do not give up.

Bill

Thank you @pirate.
You are always there when somebody needs encouragement.

The thing that bothers me most is the shipping and handling of those parts. Maybe the part cost $3.50, but the shipping and handling goes up to $22.00, then the cost it is not $3.50 anymore. Anyway I will keep experimenting and learning on the process and each time I can, I will buy the parts I will need most in advance and all at the same time so to lower the shipping costs.

Jesus

[nievesoliveras]

@all
I did redo the circuit with the bad connection corrected and the circuit did not blow up again.
The sad thing is that it does not give any feed back to the source.

Then I made the new circuit shown here and the circuit did not blow either. But again it did not give any feedback to the source.

While I was doing this tests, there was a complete blackout on the block. At that moment I thought that if it would have been a national emergency, I was not prepared with the electricity needed for the ocassion and its respective recharge system.

So I need to study a lot more to see if I can accomplish my goal. Or just take it easy and if it is meant to be it will be.

Jesus

[nievesoliveras]

@all

This feedback to the source charge is very elusive. I have not been able to get it. Others claim they have.
I will try @mvmcman circuit configuration this time to see if I can close the loop with it.

Jesus

[nievesoliveras]

@all

The schematic on post #196 should be like this one. That one the transistor is not the one I used. I used NPN and drawed a PNP.

Jesus

[xenomorphlabs]

@Jesus : I appreciate your efforts to succeed in feeding back to the source.
As i understand you want to amplify the voltage from 1.5V to 12V using a transistor.
Just for your consideration (if you haven`t already thought about it), you might wanna
look into using voltage doublers : http://en.wikipedia.org/wiki/Voltage_doubler
So using 3 in a row will get you 12 V, with hope that the amperage will still be sufficient.
About the frying of the transistor.
Have you tried 2N3055s? They are really tough and can stand some beating.
Have never managed to fry one until now hehe.
Good luck with your further efforts!
Xenomorph