Greetings friends,
I built a new monopole and I wanted to share the build with the group.
Let’s start with some parts listings. I used some non standard diodes on this build. They are ultra fast switching and the main reason I tried them is because they have a lower voltage drop. For beginners reading this, you are better off using standard parts so that you can get help from other members with tuning and troubleshooting. I have gone out on my own with this and cannot say yet if there is any advantage, it is experimental.
The Collector diodes:
Rectron 3A 200v 35ns Part# SF34-B
DATA SHEET:
http://www.mouser.com/ds/2/345/sf31-sf37-36181.pdf
The B & E diodes:
Rectorn 1A 100v 35ns Part#SF12-B
DATA SHEET:
http://www.mouser.com/ds/2/345/sf11-sf17-22674.pdf
On the base resistors I used ¼ watt 274ohm 1 percent tolerance and a 500ohm pot for adjustments.
The transistors are the standard MJL21194 all matched (8).
The system has two coils mounted; each has four 18awg power and one 20awg trigger. The second trigger wire is not currently connected to anything. All of the wires terminate on a standard terminal block with ring connectors.
The wheel is a heavy duty 26 inch wagon wheel (not a bike wheel) with ½ inch bearings. I glued the bearings shut and installed a ½ inch steel axle to utilize the mechanical energy. The axle is mounted on some roller bearings out at the ends. These are the type of bearings used on assembly line rollers and have a 20 percent self adjusting swivel to prevent any binding on the axle.
I do not have anything attached to the axle yet but I am thinking of putting a small wheel with magnets to hook up a generator coil assembly, also maybe a fan like Mr. Bedini or a pulley system for doing some kind of mechanical work. I am getting a lot of torque from this setup because of the wheel size and it is also pretty darn heavy which makes for good inertia once it gets up to speed.
The magnets are the standard ceramic type and there are 16 of them mounted on the wheel. I used JB weld epoxy to glue them on and did a second coat on top of the first.
I have laid out the circuit in a way to allow a few options for running. The transistors are configured in branch mode with two banks of four. The switches at the top of the board allow for sending all outputs to one side, the other side, or branch (both sides).
The switch on the lower left is for switching to generator mode and the lower right switch is the primary on/off switch. All of the bus bars are made with 14awg solid wire; the kind used for house electrical. The clip leads are made with 10awg braided and all connectors are soldered.
Having just completed the build last night I do not have a lot of experience with the system yet but initial testing looks very good. I have been charging up two 75AH batteries in branch mode with no problem. It seems to like to run with a 1A input when in mode 1 operation. That equates to just a little bit of resistance on the pot over top of the base but not much. I may put a fixed resistor in the trigger path on a switch to change over from the pot once I figure out exactly what it like to run on.
Here are a few pictures of the system.
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![Click image for larger version
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I built a new monopole and I wanted to share the build with the group.
Let’s start with some parts listings. I used some non standard diodes on this build. They are ultra fast switching and the main reason I tried them is because they have a lower voltage drop. For beginners reading this, you are better off using standard parts so that you can get help from other members with tuning and troubleshooting. I have gone out on my own with this and cannot say yet if there is any advantage, it is experimental.
The Collector diodes:
Rectron 3A 200v 35ns Part# SF34-B
DATA SHEET:
http://www.mouser.com/ds/2/345/sf31-sf37-36181.pdf
The B & E diodes:
Rectorn 1A 100v 35ns Part#SF12-B
DATA SHEET:
http://www.mouser.com/ds/2/345/sf11-sf17-22674.pdf
On the base resistors I used ¼ watt 274ohm 1 percent tolerance and a 500ohm pot for adjustments.
The transistors are the standard MJL21194 all matched (8).
The system has two coils mounted; each has four 18awg power and one 20awg trigger. The second trigger wire is not currently connected to anything. All of the wires terminate on a standard terminal block with ring connectors.
The wheel is a heavy duty 26 inch wagon wheel (not a bike wheel) with ½ inch bearings. I glued the bearings shut and installed a ½ inch steel axle to utilize the mechanical energy. The axle is mounted on some roller bearings out at the ends. These are the type of bearings used on assembly line rollers and have a 20 percent self adjusting swivel to prevent any binding on the axle.
I do not have anything attached to the axle yet but I am thinking of putting a small wheel with magnets to hook up a generator coil assembly, also maybe a fan like Mr. Bedini or a pulley system for doing some kind of mechanical work. I am getting a lot of torque from this setup because of the wheel size and it is also pretty darn heavy which makes for good inertia once it gets up to speed.
The magnets are the standard ceramic type and there are 16 of them mounted on the wheel. I used JB weld epoxy to glue them on and did a second coat on top of the first.
I have laid out the circuit in a way to allow a few options for running. The transistors are configured in branch mode with two banks of four. The switches at the top of the board allow for sending all outputs to one side, the other side, or branch (both sides).
The switch on the lower left is for switching to generator mode and the lower right switch is the primary on/off switch. All of the bus bars are made with 14awg solid wire; the kind used for house electrical. The clip leads are made with 10awg braided and all connectors are soldered.
Having just completed the build last night I do not have a lot of experience with the system yet but initial testing looks very good. I have been charging up two 75AH batteries in branch mode with no problem. It seems to like to run with a 1A input when in mode 1 operation. That equates to just a little bit of resistance on the pot over top of the base but not much. I may put a fixed resistor in the trigger path on a switch to change over from the pot once I figure out exactly what it like to run on.
Here are a few pictures of the system.
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