Solid State Bedini

[theremart]

Idea....

I had an idea which I may try over the next week...
I was thinking of taking the imhotep relay and using it for the trigger for the solid state battery charger ( all the rest of the transistors ). I was wondering what others think of this idea... I am not sure I can get it to trigger at a high rate but thought I might give it a go.

[hh1341]

you can't do anything else with the computer that uses the battery tester.
:

Jetijs,

The CBA II, does not tie up your computer when running a load test.
You can multi-task.

Carl

[theremart]

Ok...

Speaker coil constructed, 100' of 18 gauge speaker wire, and about 150 turns 23 guage wire near the center for my trigger coil. Will try hooking it up tomorrow this should be fun

[Jetijs]

Hi Carl
good to know that, but the CBA battery testers are not cheap and I don't think I will buy another one now

Anyway, seems that the charger works as it should:



The first two tests are somewhat random. But at the third test you can see that the battery is finally starting to behave as it should and the discharge curve becomes like it should be. In first and second test the starting voltage was 12.02, in the third test the starting voltage was 12.75 and at the last test it was 13.01. Those are resting voltages. But also the charging voltages are going up, for the last charge took the battery up to 14.07V, I wasn't able to do this before. Looks good so far
Will inform you on my updates

[Jetijs]

Heres an update:



This is the second battery that is being conditioned. It is also a 200 Ah battery. You can see that the conditioning process is going very similar to the first battery.
Thanks

[dambit]

Wow, those batteries must be pretty worn to be that far below rated capacity. This will be a good test.

[theremart]

Amazed....



I put 100ft of 18 guage speaker wire on a spool about 1/2 way thru I wound about 150 turns of 23 gauge wire. It is now turning a wheel of my ssg.

Will try 24V on it next.... this is kool!

[theremart]

Just tried 24V

YIKES

Burnt out my 47 ohm resistor, then burnt out 4 47 ohms in parallel. Then burnt out my 5 watt 100 ohm resistor ....

Wow...

[gmeat]

YIKES

Burnt out my 47 ohm resistor, then burnt out 4 47 ohms in parallel. Then burnt out my 5 watt 100 ohm resistor ....

Wow...

Hi Mart,


Try starting it and stop the wheel as I think that may be interfering.And up the ohms on the resistor.Just an idea,Let me know if this helps.


-Gary

[theremart]

Re: testing

Hi Mart,


Try starting it and stop the wheel as I think that may be interfering.And up the ohms on the resistor.Just an idea,Let me know if this helps.


-Gary

Ok will up the ohms, tried putting in a choke, but only stopped it from working, tried put in my break like, it glowed dimly but still smoke comming out of resistor.

24 V is sooo much fun! lol

[theremart]

Ok next stage

Ok will up the ohms, tried putting in a choke, but only stopped it from working, tried put in my break like, it glowed dimly but still smoke comming out of resistor.

24 V is sooo much fun! lol

Ok resistors very warm, 5 (550 ohm resistors in parallel), 1 100 ohm 5 W and the brake lite bulb in series it is working, but I want to find a better way of doing this without the resistors being too hot to touch... May go up to 600 ohm resistors....

The charge rate looks real good

[theremart]

Found out why it was soo warm.

The ssg was pulling 2 amps ! The coil is cool no heat there at all nor were the insides even warm... The target batteries shot from 12.5 V to 14.8 V in about 20 min....

Me want more!

I added 4 550 ohm resistors they are now warm to the touch...

[Sephiroth]

lol... you seem to be attracting electrical fires Mart! Play safe

Do you know the rpm you have with the new coil? and number of magnets on the rotor

[Jetijs]

Mart, what exactly are you doing? Can you post a schematic or something?
Thanks

[theremart]

What am I doing...

Mart, what exactly are you doing? Can you post a schematic or something?
Thanks

I am buying myself another transistor with heat sync. Guess I will put a 2n3055 on..


Source batteries 2 13 amp hour batteries at 24 V

Target batteries 2 13 amp hour batteries at 24 V

I just ran this for another 20 min target batteries shot up to 17V was pulling 2.5 amps source batteries one was at 12.60 the other was at 12.35 V ( under load of 2.5 amps ). Then the transistor got hot and died.

I am using a standard SSG with multi diode output, multi resistors on the
trigger coil. I have not seen this sort of charging with the 13 amp batteries ever. Hope I can get this stable.

One other thing I am doing is using the daftmans setup with a reed switch on the trigger coil. After I hooked that up charging went thru the roof.

Going to have a fun week I have the whole week off!

Also I am using 18guage speaker wire 100 feet of it, The coil never gets hot. but my circuit sure does.