Self Running Micro TPU, with closed loop.

[4Tesla]

@all
How about tuning the RC circuit to 7.5hz... does that increase run time?

Edit: I used a RC filter calculator and I think that you can tune this frequency with a .33uf capacitor and a 100K pot 

@btentzer
Edit#2: I thought the 3904 would be a good transistor. 

4Tesla

[Motorcoach1]

The circut is a duel feed bak royford .. the coil as a duel repleniching diminching looop.  you got a foching loop ....  wil publish more later ... this is getting eal hard maybe i won't publish after i read stefans remarks on the th ... mayby we should not have this tecknowlegy

[hakware]

Getting in here a bit late, But I am a bit curious if most are running at 7 Hz or if that changes depending on the toroid size.

I will wrap up a few cores later today and see what I can come up with.

[4Tesla]

@hakware
Hi hakware,

Welcome...  I'm a newbie too.  I think most are running at 2hz, but I hope someone will try 7.5hz to see what happens.  I believe the frequency depends on the RC circuit.  I don't have a ferrite core, but plan on getting one soon.

@all
Anyone recommend an online site for getting cores?

I recommend using one transistor and one LED to keep the circuit simple and reducing the size of the supply capacitor to reduce run times.  I think we should focus on the frequency, coils, and cores.  Speaking of coils, can someone explain to me what the "trigger" coil does?  It seems that the transistor is the trigger.  Has anyone tried the circuit without the "trigger" coil to see if it is doing anything?

Thanks,
4Tesla

[4Tesla]

Edit: accidentally posted same post twice.