Circuit setups for pulse motors

[capthook]

I ran across this excellent site that provides extensive wiring/coil/generator/motor details/theory/construction.  I learned a ton!
http://www.stanford.edu/~hydrobay/lookat/pmg.html

On Ramset sheaths - it appears "Redhead" anchor bolts are a subunit of Ramset.  Redhead bolts can be found at HomeDepot.  However, they are silver in color rather than copper looking - so the material composition is different than hoptoads examples.
Testing coils using a core of only the sheaths has not proved promising.  The sheath structure may be beneficial - however - they still need something inside of them other than air IMO.  I've decided to go with 3/8" x 3" Redhead anchor bolts as the core - bolt and all.  The smaller "head" at the end of the bolt over a hex bolt at least results in less drag.

I would still love to hear results of any with experience using magnetite cores.  Has anyone tested these? Anyone know of a source to order "magnetite"?

CH

[hoptoad]

@capthook
Ramset sent me this information below, a few days ago. It may help in identifying the difference, if any, of the two sheaths, that is, the one I used, and the one you have presently. The sheaths I used were manufactured in the late 1980's and I purchased them originally for use in building my home in 1990.

Quote Ramset :   "HOP these anchors were made in Australia  I T W  still owns both companies    DYNABOLT GOLD   was the name when we had them forsale in USA  I asked my brother to check our old stock   which he will do tomorrow   However In discussing with USA engineering  product was manu. to ASTM spec grade 5  still have more info to follow  If any of your crew is was a contracter in Australia call Ramset there ask for specs for bidding a job     submittle info    Chet"

It is quite possible that the alloys are the same, but with a different coating, or they are completely different.  . Hopefully you may receive more info from fellow overunity.com forum member, Ramset.

Cheers ......KneeDeep

[capthook]

Thanks hoptoad!
- - -

Can someone give me power consumption comparions between using a Hall IC and a Optointerrupter as a switching device?  Optical will offer me greater control - I would prefer it - but the lowest total power cost is what I need.

What are the voltage drop comparisons?  What about duty times?  An Optointerupter will shine all the time while Hall IC pulses.  Hall IC leakages etc.....

Which solution will result in the least amount of power consumption?

Links to datasheets if that helps in answering......
(Hall: http://www.allegromicro.com/en/Products/Part_Numbers/1101/1101.pdf
(Optical: http://www.optekinc.com/pdf/OPB355-360to390-820-860to890.pdf)

Thanks   

CH

[tropes]

Can someone give me power consumption comparions between using a Hall IC and a Optointerrupter as a switching device?  Optical will offer me greater control - I would prefer it - but the lowest total power cost is what I need.

What are the voltage drop comparisons?  What about duty times?  An Optointerupter will shine all the time while Hall IC pulses.  Hall IC leakages etc.....

CH
You can use a separate circuit (1.5-2v rechargable battery) to power the LED side of the optointerrupter. No power surges, no fried Hall sensors.
Tropes

[tropes]

This is an example of Gyulasun's circuits for dummies like me.