Self Running Micro TPU, with closed loop.

[innovation_station]

and some of you eleite   think your done   


lol

miles to go     we will get there  lets scale it up 

ist

[4Tesla]

@btentzer


WW Grainger #6A852 is 'J' type thermocouple extension wire. It is composed of a positive leg of iron and a negative leg which is 45% nickel and 55% copper.

Select 'Grainger item number where 'keyword' is shown and put the 6a852 under that and click 'go'.

Interesting use of T-couple wire. Never thought of that! Might be interesting. Other types may be more interesting 

Oh.. I thought it was one iron leg... I'll keep looking.

Thanks,
4Tesla

[4Tesla]

@btentzer

I'm not clear how you had your 37 minute circuit hooked up, can you draw a schematic of it?  Thanks!

Would more windings on the collector coil (secondary coil hooked up to the LED) increase the voltage (like a transformer)?  This way still using 9 volts to start.  If it did, would we need to add a current limiting resistor in series of the LED?  Maybe add a current limiting resistor anyway to protect them from blowing up.  Maybe try putting a 470ohm resistor in series with the LED.  That might keep them from blowing up.  I don't think it will effect the efficiency of circuit, but can test to see.

@all
Edit: Does anyone have or used a MPSA18 transistor in this circuit.  The specs look good.  Here is the site:
http://www.jameco.com/webapp/wcs/stores/servlet/ProductDisplay?langId=-1&storeId=10001&catalogId=10001&productId=210681&pa=210681PS

4Tesla

[eon]

i dont have a freq counter so best estimates here

2M & 1uF: approx. 3/4hz, 12.34min
1M & 1uF: approx. 6/7hz, 7.44min
0.5M &1uF: approx. 10hz, 4.25min

[akashh]

Hi, I have been watching this thread and tried replicating it using copper coils but to no avail.  I found some speaker wire that is multi-stranded and used that for two coils, and used copper for the 3rd coil.  Windings are: 24 turns, 14 turns & 6 turns.  Run time with 3 LEDs is 5m10s.  I'm using 1000mF, and 1mF with 1 meg resistor.
How can I improve the run time?  I'm charging it with 12V.