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Step 10Update - New Flyback Charger
I have come up with a modified flyback transformer that will work with this power supply using spare parts from my junk box. This is based on the rewound flyback from here, and my driver circuit is a modified and much simpler version of this one.
I haven't gotten around to actually making a circuit board though. It is still sitting on my breadboard. I eventually plan on using this for a coil gun project, but that probably won't happen anytime soon.
The secondary is 300 turns of 28 awg wire. The primary is 15 turns of 22 awg wire.
The primary will need tweaking depending on the driver used and the input voltage.
The layers of the secondary are insulated with a couple layers of teflon thread tape. There are a few layers of electrical tape separating the primary from the secondary.
The core is from a flyback transformer I took from a 15" computer monitor.
The output will be AC, so it needs a diode in the line to rectify it. I have gotten by with a 1N4007, but a fast recovery diode like the UF4007 would be better because of the high frequency being used.
This can be driven with one of the many flyback driver circuits available. I used a simple 555 timer circuit to drive mine, but it would work better with a ZVS or Mazilli driver.
For more information on flybacks check out the HvWiki page on flybacks. There are also many good instructables on flybacks so I won't go into building a driver here.
I haven't gotten around to actually making a circuit board though. It is still sitting on my breadboard. I eventually plan on using this for a coil gun project, but that probably won't happen anytime soon.
The secondary is 300 turns of 28 awg wire. The primary is 15 turns of 22 awg wire.
The primary will need tweaking depending on the driver used and the input voltage.
The layers of the secondary are insulated with a couple layers of teflon thread tape. There are a few layers of electrical tape separating the primary from the secondary.
The core is from a flyback transformer I took from a 15" computer monitor.
The output will be AC, so it needs a diode in the line to rectify it. I have gotten by with a 1N4007, but a fast recovery diode like the UF4007 would be better because of the high frequency being used.
This can be driven with one of the many flyback driver circuits available. I used a simple 555 timer circuit to drive mine, but it would work better with a ZVS or Mazilli driver.
For more information on flybacks check out the HvWiki page on flybacks. There are also many good instructables on flybacks so I won't go into building a driver here.
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