self charging electric car (prototype 1)

[dreamyear]

u can do this with realy but i prefer this way

[dreamyear]

Hi dreamyear,

it's a good idea to experiment with trying to collect DC motor coil flyback.

I'm trying to understand how your mechanical switch is turned?... it looks like it's turned independent from the hub motor (L1)?... if so, how would the timing work for only the L1 flyback to be directed to the capacitor at the right moment?

I'm not saying it can't work, just trying to understand your experiment. I have tried this in the past but the timing and switching circuit is the main problem.

Thanks for sharing

Luc

[gyulasun]

Hi dreamyear,

If I can see correctly, you show 3 different schematics:
1st is in the beginning of your video with a bridge rectifier
2nd is in your first post, one diode and you discharge the capacitor directly into the battery
3rd is in your Reply #4 above, one diode and you dicharge the capacitor via the motor into the battery

Ah, I have just noticed you modified your schematic, your Reply #5 above and now this latter circuit seems to be same as the one in your very first post. 

I think that using a full wave diode bridge is better than using a single diode because a DC motor produces spikes with both polarities to deal with when the brushes cut the current (in that moment the normal induced voltage is present across the rotor coils).

Would you answer gotoluc question: 

"I'm trying to understand how your mechanical switch is turned?... it looks like it's turned independent from the hub motor (L1)?..."

Thanks,  Gyula

[gotoluc]

I'm sorry, I just tried your circuit and the capacitor is charged by the battery and no L1 (motor) flyback goes to capacitor.

Luc

[gyulasun]

Hi dreamyear,

Do you happen to have an oscilloscope?  If yes, please check the current waveform across a 0.1 Ohm power resistor, just insert the resistor in series with the negative pole of the battery and show the waveform across it.  I indicated in your schematic where I think the resistor.

Thanks, Gyula