Shorting coil gives back more power

[penno64]

Hi Romero,

Great work.

I think you will be pleasantly suprised if you go to a half wave rectifier. You are using
only one diode, yeah.

I used two and what a massive jump in output.

Trying hard to get a self runner.

Penno

C ----------->--------C
O                             A
I                              P
L------------<--------S

[gyulasun]

Hi Penno,

Sorry to chime in, did not you want to say a full wave rectifier instead of the half wave?   Your 'schematic' below shows a half wave rectifier, even though you show a second diode?  So I cannot get how you mean.

Normally, using a full wave bridge across the coil, not only the spikes get captured and dumped into the capacitor but any induced voltage waveforms that are higher in amplitude than any two diodes forward voltages (out of the 4 diodes).  If your arrow symbols in your 'schematic' represent your two diodes, you still have a half wave rectifier and any voltage with reverse polarity to these two diodes gets blocked, cannot go into the capacitor.

Thanks,  Gyula

Hi Romero,

Great work.

I think you will be pleasantly suprised if you go to a half wave rectifier. You are using
only one diode, yeah.

I used two and what a massive jump in output.

Trying hard to get a self runner.

Penno

C ----------->--------C
O                             A
I                              P
L------------<--------S

[penno64]

Hi G,

Yes, you are correct.

But all I can tell you is what I see on my meter.

A single diode then into 3 x mot caps = 11vdc
Two diodes as per above = 100vdc

I shold stop beign lazy and put the scope on it.

Penno

[gyulasun]

Hi Penno,

Thanks and a scope shot would tell it sure. Maybe you would feel like using a full wave bridge too, just to compare the DC levels...   however it would be better using fast recovery diodes for the bridge or at least two more diodes of the same type you have used already when got the 100V DC.

Gyula

[romerouk]

@Magluvin
The core is the original one comming from the microwave fan.