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Still online, we are. The code for this website is getting old, but still works well as far as I've seen. I may update it with new code and new features eventually, one day when I have both free time and focus. Until then, the content is still useful, I'm keeping it online. Comments and donations are welcome, but include your email address if you want a reply.

Ideas for the future of the site -
Here are some ideas I've been brainstorming. I don't think to much of the site should change, because it has been successful all these years with very little change. still nearly 1000 visitors a day to the site!
  • donations - I think it might be time to make some changes to the donations. I would rather see people get a lifetime membership and not have to worry about an expire date. here's an idea, a smaller recurring payment monthly, or 4 times a year, then maybe offer a second option, donate enough to cover the cost of the server for one month and you'll get a lifetime membership that never expires.
  • automated account creation - the membership process should be automated. I rarely hear a complaint about anything, but I don't think people feel so safe emailing me a username and password to set up an account. I think people may feel more safe dealing with an automated system. make a donation, then type your account into right in to the computer and have it set up on the spot.
  • members only forum - the site doesn't seem to need a full forum, but it could still benefit from a single simple board or mailing list, maybe. still optional, but maybe only available to members. non-members wouldn't be able to post on or see the forum. for those who donate to openly communicate.
You can send me your comments in the form above. I'm not putting any work into these changes without getting feedback from you!
If we have any web developers out there, we'd love your help! come on, my birthday's tomorrow!

Better forum? -
We are currently using vbulletin, but maybe there's a simpler alternative that would better fit the site. What do you think of this one? Please let us know what you think, keep vBulletin, or switch to SEO. Comment box is below.

ideas or comments?
please send us your comments or suggestions or any ideas you might have for the site. this is the easiest way for you to let us know what you think. just type in the box above and send.

Thank you, everyone who has helped support the site over the years. you've done your part, now help me do my part to improve the site with your input.

tips to download -
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The bandwidth reset time is now set to 20 hours instead of a week. We hope this helps you get what you need without causing any problems with the site.

new server -
this week, we've moved the website to a bigger faster server. we have doubled the weekly download limit to 20mb and are now allowing hot-linking, so more people can get the documents they're looking for. this new server is still relatively low cost, but is a bit more to pay for each month then the last server. we still need your donations to help with this. thank you all who have supported the site and community!!!

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Last Accessed Size  File
04-25-19 2686  12V to 120VAC Inverter.gif
04-25-19 654  12V to 120VAC Inverter.jpg
04-25-19 8101  12vto240vInverter.gif
04-25-19 2161985  250 Watt Power Inverter.pdf
04-25-19 1368794  Abcs Of Dc To Ac Inverters.pdf
04-25-19 362522  CPLD Powers Battery Powered System.pdf
04-25-19 210113  Charge Pump Inverters.sch
04-25-19 313930  Choosing IGBTs for Solar Inverter Applications.pdf
04-25-19 638796  DC-AC Inverters - Misc.pdf
04-25-19 18802  DC-AC SCR Inverter.pdf
04-25-19 1607599  DC-DC Inverter - 100W.pdf
04-25-19 10306  Dc To Dc Convertermulti Output.gif
04-25-19 59970  Dc To Dc Convertermulti Output.jpg
04-25-19 131243  Dc-Dc Converter Using Top Switch Ic.pdf
04-25-19 96708  Dc-Dc Converters-Eliminating Current Spiking.pdf
04-25-19 207788  Fraser Technologies 12V to 160V Regulated DC-DC Converter.pdf
04-25-19 7424  High Voltage from a 9V battery.gif
04-25-19 1784  High Voltage from a 9V battery.jpg
04-25-19 101718  Implementing a DCDC SIngle Ended Forward Converter AND8161-D.PDF
04-25-19 4096  Inverter - 12V To 34V.gif
04-25-19 31360  Inverter - 12V To 34V.jpg
04-25-19 61758  Inverter - Dc-Dc Upconverter-Miniature.pdf
04-25-19 41128  Inverter - Inverter-Three Level.pdf
04-25-19 788597  Inverter - Inverters-Dc To Ac-Abc's.pdf
04-25-19 22136  Inverter - Negreg.jpg
04-25-19 18193  Inverter - Transformerless Power Inverter.pdf
04-25-19 648303  Inverter Design for Photovoltaic Systems.pdf
04-25-19 27472  Inverter to run op-amp based circuitry on 12V power.pdf
04-25-19 22030  Inverter.pdf
04-25-19 237171  Negative Supply from a Positive Supply.pdf
04-25-19 48874  PSU for TT-101.pdf
04-25-19 43462  Positive Into Negative.gif
04-25-19 8610  Positive Into Negative.jpg
04-25-19 54675  Power Supply - Inverter.gif
04-25-19 344558  Power Supply - Inverter.jpg
04-25-19 11936531  Psu & Battery Charger Circuits.pdf
04-25-19 24200  Regulated +13V to -13V Inverter.pdf
04-25-19 436594  Sine Wave Inverter.pdf
04-25-19 142504  Spread Spectrum Dc-Dc Converter Combats Emi.pdf
04-25-19 39119  Transistorised
04-25-19 40202  USB-Powered Bipolar Supply.pdf

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