Solid state Bedini charger from John Peters

[crowclaw]

Hi Crowclaw yes it uses a relay but there has to be another battery for source yes?
Did you try this circuit?
Thanks

Hi Guruji, The battery in the centre is the one being charged, the one to the right is the source battery.
Yes I have used this circuit, but I use electronic switching. The circuit I am currently using is of the same principle but uses MOSFET type high side switches to switch the inductor. I have also used other semiconductor devices, basically this type of circuit works very well and charges quite quickly from around 40Ma up to around 400Ma @ 12 volts upwards. You can experiment with various inductors from around  2 ohms upwards, I find mine work best at between 1Khz > 2Khz. If you want to charge 12 volt Nicads or Lead Acid types charge at around 14 volts. You will have to continually charge and discharge many times to condition your cells. Kind Regards

[guruji]

Hi Guruji, The battery in the centre is the one being charged, the one to the right is the source battery.
Yes I have used this A, but I use electronic switching. The circuit I am currently using is of the same principle but uses MOSFET type high side switches to switch the inductor. I have also used other semiconductor devices, basically this type of circuit works very well and charges quite quickly from around 40Ma up to around 400Ma @ 12 volts upwards. You can experiment with various inductors from around  2 ohms upwards, I find mine work best at between 1Khz > 2Khz. If you want to charge 12 volt Nicads or Lead Acid types charge at around 14 volts. You will have to continually charge and discharge many times to condition your cells. Kind Regards

Hi crowclaw thanks for response but does this circuit charge both batteries?
I am using Groundloop circuit right now and have an 8pin DPDT relay. I don't know how to hook a swapper to it any help please?
Thanks

[niofox]

Hi Guruji, The battery in the centre is the one being charged, the one to the right is the source battery.
Yes I have used this circuit, but I use  switching. The circuit I am currently using is of the same principle but uses MOSFET type high side switches to switch the inductor. I have also used other semiconductor devices, basically this type of circuit works very well and charges quite quickly from around 40Ma up to around 400Ma @ 12 volts upwards. You can experiment with various inductors from around  2 ohms upwards, I find mine work best at between 1Khz > 2Khz. If you want to charge 12 volt Nicads or Lead Acid types charge at around 14 volts. You will have to continually charge and discharge many times to condition your cells. Kind

@Crowclaw
Would it be possible to provide a diagram of the methods you prefer?  I would like to try a switching circuit for my charger setup but I haven't found a working diagram yet.  Any help would be appreciated!

@guruji
I tried out the charger that uses a capacitor
http://www.overunity.com/index.php?topic=9157.msg241231#msg241231
It seems alot more difficult to tweak for me because I don't have access to a wide variety of capacitors.  The one I tried only gives me ~60v spikes whereas I was getting ~200v with my earlier setup.   Of course, the 60v spikes only cost me 20ma instead of 410ma.  If I could get it tweaked with a good capacitor it would be a lot better.  What capacitor are you using?
I used 1uf and 100nf but neither gives much more than 60v spikes :S
One of them just makes my transistor get really hot
Perhaps I need to  vary the 100k resistance?

[crowclaw]

Hi crowclaw thanks for response but does this circuit charge both batteries?
I am using Groundloop circuit right now and have an 8pin DPDT relay. I don't know how to hook a swapper to it any help please?
Thanks

Hi Guruji,

As the circuit stands the battery on the right side of the diagram provides the power source  while the circuit only charges the  battery in the centre. You must first make sure you 'condition' the cells prior to them accepting a lasting charge. I take it you intend to use that relay to switch over the batteries  when each are charged.
Are you also using a 555 and relay as per diagram.   

[crowclaw]

@ Neofox,


@Crowclaw
Would it be possible to provide a diagram of the methods you prefer?  I would like to try a switching circuit for my charger setup but I haven't found a working diagram
yet.  Any help would be appreciated!

Yes I will gladly post some diagrams of my work, I am still experimenting with different configurations and the diagrams are all in my head so I will draw something out for you as soon as I can.... no problem.