12V PLL coil...
flannelhead, Thu Mar 06 2008, 02:00PMFinished this some time ago, and now posted it
So basically just PLL DWSSTC II driver -> TC4420 -> IRFP240.
The sparks aren't so impressive, but hey, you can't get everything: this thing is running off a 12V 1A wall wart!
Here's a small video:
]small_tc.wmv[/file]
And here you can see my obvious asthetics skills
There is an interrupter in the picture, but it's not working. No audio modulation implemented. I'm going now to make a small DRSSTC, because I got bored with SSTC's.
Re: 12V PLL coil...
Arcstarter, Tue Mar 18 2008, 09:30PM
Hey great coil! Is it Steve Wards mini or micro coil?
Arcstarter, Tue Mar 18 2008, 09:30PM
Hey great coil! Is it Steve Wards mini or micro coil?
Re: 12V PLL coil...
flannelhead, Wed Mar 19 2008, 01:38PM
Nope, it's Steve Conner's PLL
flannelhead, Wed Mar 19 2008, 01:38PM
Nope, it's Steve Conner's PLL
Re: 12V PLL coil...
quicksilver, Sun Mar 23 2008, 03:57PM
Would you happen to have a cleaner copy of the schematic? Id like to try that as the parts are pretty much free & it looks fun. The hand-drawn schematic is confusing in a few places.
quicksilver, Sun Mar 23 2008, 03:57PM
Would you happen to have a cleaner copy of the schematic? Id like to try that as the parts are pretty much free & it looks fun. The hand-drawn schematic is confusing in a few places.
Re: 12V PLL coil...
uzzors2k, Sun Mar 23 2008, 06:03PM
Here's how I wired my coil together.
Spark, have you tired increasing the supply voltage? I'm sure you could get some good streamers from that coil, at least an inch.
uzzors2k, Sun Mar 23 2008, 06:03PM
Here's how I wired my coil together.
Spark, have you tired increasing the supply voltage? I'm sure you could get some good streamers from that coil, at least an inch.
Re: 12V PLL coil...
flannelhead, Tue Mar 25 2008, 12:44PM
This coil was just an early prototype, and I don't like developing it any further. I've started a new coil, and perhaps I will try some higher voltage with it. However, if I take the coil with me somewhere, I certainly won't like to take also a heavy bench supply, almost bigger than the coil itself
BTW, I did a little measurement and found out that the coil draws around 0.6Amps. Then I measured the voltage, and the multimeter showed only 3 volts with the 12V wall wart. Could the DMM be picking interference from the coil? With no load the wall wart output voltage is 16V.
flannelhead, Tue Mar 25 2008, 12:44PM
This coil was just an early prototype, and I don't like developing it any further. I've started a new coil, and perhaps I will try some higher voltage with it. However, if I take the coil with me somewhere, I certainly won't like to take also a heavy bench supply, almost bigger than the coil itself
BTW, I did a little measurement and found out that the coil draws around 0.6Amps. Then I measured the voltage, and the multimeter showed only 3 volts with the 12V wall wart. Could the DMM be picking interference from the coil? With no load the wall wart output voltage is 16V.
Re: 12V PLL coil...
uzzors2k, Tue Mar 25 2008, 05:31PM
Those would be pretty impressive streamers for just 1.8W of input, even less after losses. Check what the voltage drops to with a 0.6A load if you want to be sure. I don't think the IRFP240 would turn on with just 3 volts anyway, so it's probably just the multimeter.
uzzors2k, Tue Mar 25 2008, 05:31PM
Those would be pretty impressive streamers for just 1.8W of input, even less after losses. Check what the voltage drops to with a 0.6A load if you want to be sure. I don't think the IRFP240 would turn on with just 3 volts anyway, so it's probably just the multimeter.
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