just finished my first bedini energizer and already problems :(

[prometei]

Feynman , I don't have a hall ic, I'll drop by the local electronics supply store and see if they have some.

bourne

1. I've bought the transistor in a shop, not eBay. How would one test a 2n3055 transistor with a multimeter?

2. I've just checked the potentiometer with the 100 ohm resistor and they work, I can adjust the resistance from 102 ohms to 1094 ohms.

3. I'm going to go to the hardware store to get these thin copper coated welding rods.

my coil is 14mm in diameter and the magnets are 12 mm in diameter, is that ok?
Otherwise I'll have to order magnets trough eBay cause in my small town I could not find any store that sells proper magnets for the SSG.

[Feynman]

@prometei

You can get Hall IC from

http://simplemotor.com

They usually don't have Hall IC at radioshack, but you could get a reed switch from radioshack.  Sounds bourne has alot of good info.

@bourne

great song on the vid 

[gyulasun]

.....
1. I've bought the transistor in a shop, not eBay. How would one test a 2n3055 transistor with a multimeter?
.....

Hi,

Here are two links for testing your transistor if it is a short or open circuit:
this is a shorter description: http://www.anatekcorp.com/qdmmvom.htm
this includes much more info on different type semiconductor testings:
http://www.repairfaq.org/sam/semitest.htm

The latter link includes a tablet on TIP3055 transistor which is identical to your 2N3055 (except the case):

This has been confirmed below on a selection of common transistors using an El-cheapo DMM:

     Transistor       B-C Voltage     B-E Voltage
   --------------------------------------------------
       TIP3055           0.640           0.642
       TIP2955           0.668           0.668
       BD140             0.697           0.699
       2N2369A          0.682           0.710
       PN3563            0.752           0.753
       BC108              0.715           0.716

CAUTION: Do not hold the transistor under test in your hand. For every degree the transistor increases in tempreture, the Base-Emitter Diode Drop (commonly called Vbe) decreases by 2 mV. This is a significant amount when determining the B-E and B-C junctions.

rgds,  Gyula

[NerzhDishual]

Hi Prometei,

Nice 'motor'.
Two thoughts:
1) On your picture the gap between the rotor's magnets and the coil looks too large, IMHO.
2) Perhaps the magnets are also too weak.

This SSG 'motor' did not work (even with a very small gap) until I 'doubled' the ferrite magnets:


Best

[bourne]

Hi Prometei,

Hows it going?

I didn't explain myself very clearly in my last post, it was getting late, so to clarify;

1 - This was pointed out in Bedini Yahoo group http://tech.groups.yahoo.com/group/Bedini_Monopole3/ as a Potential problem, if you bought them from a shop it should be nothing to worry about. I know I have seen a table showing what you should see when testing the transistor with a digital multi-meter (diode test setting), but can't for the life of me remember where. It might be in this group somewhere, it might not.
If I get time I will test one of my spares and post the results

2 - The way I damaged my 2watt pots was by adjusting the resistance too fast while the motor was running. i.e. sweeping the pot from high res to low res in 1 - 2 seconds. It's best to adjust it a tiny amount at a time and let the motor react to the new resistance.

3 - Lincoln R60 welding rods are what Mr Bedini suggests to use but I couldn't get them anywhere in Britain, so after about a week of searching  I ordered some copper coated welding rods from a welding supply on Ebay. They work fine it seems!

I must of spent a couple of months reading and researching everything I could find about the Bedini machine while I was slowly getting the bits together to build it. My wound coil was sitting on my shelf for 4 weeks while I sourced my wheel, magnets and components

Here are a few links to read through;

http://www.fight-4-truth.com/Schematics.html (Very good)
http://www.dennissharp.com/ssg/index.html
http://peswiki.com/index.php/Directory:Bedini_SG (read everything here)

Big boys group!
http://tech.groups.yahoo.com/group/Bedini_SG/

This is a very good forum with advise from Peter Lindemann!
http://energeticforum.com/ I strongly suggest you sign up

That should keep you busy for a while