Feedback To Source

[nievesoliveras]

@all

To determine the resistors needed in order to get between 1.5 and  3volts I will use the formulas on the graphic here.

In order to get 3volts I need 1 resistor of 100ohms and another of 300ohms
In order to get 2volts I need 1 resistor of 100ohms and another of 500ohms

I am assuming a 12v comming from the pulse motor coil instead of 11.46v.

Because of that, any of this two voltage divider configurations must work in theory.

Jesus

[nievesoliveras]

According to plan steps 6 and 7 are accomplished here.

Using 1 resistor of 100 ohms and another of 500 ohms. The 100 ohms coming from the negative and the 500 ohms from the coil diode.
The circuit outputs only 0.98volts.

To get the five hundred ohms that does not exist, I used 2 one thousand ohms in parallel.

Using again 1 resistor of 100 ohms and another of 500 ohms. The 500 ohms coming from the negative and the 100 ohms from the coil diode.
The circuit outputs only 3.90volts.

That means that the true voltage differs considerably from the theoretical graphic values.

Using the formula: Desired voltage = Coil output X R1/R2 gives a different value also.

But I "hope" that it could make the audio transformer to work. We will see.

[nievesoliveras]

When I added a 2200uf 50v cap to the circuit, instead of four minutes, it lasted running a long time and twice as fast. I mean with the cap addition it runs faster and for longer periods of time with a 1.5v battery. It does not recharge back though.

Edit:
The purpose of this is that I needed more than 4 minutes to make tests or prepare the camera to take photos etc.

Jesus

[nievesoliveras]

@all

The circuit composition I did before of 4 different circuits running with a 1.5v battery, is going to be used to test if the coil output has the strength needed to provide a 1.5volts.

Jesus

[gadgetmall]

@Jesus . Nice work Man .  I have been building and building and designing feedback circuits by the hand full . If you need any parts like maybe germanium transistors to play with i have 120+ of them i bought off ebay . all different gains and base voltages . i would be glad to send you a bout 5 or 10 for a self addressed soft pack . and i will sort thru them like i have been doing getting the best gain vers bias for our / your low voltage 1.5 volt operation to further increase the positivity of the system for feedback to Source . you interested ?Drop me a pm and ill give you my address . I find this subject interesting because i do have a self runner but want to compact it to a solid state or at least Miniaturize the device to carry and power itself along with doing work . My Bedini weigh self runner weight about 40 pounds total and it ain't that portable     . I hope My endeavorers will eventually help you . God Speed .. Al