MrMartian Posted December 3, 2013 Share Posted December 3, 2013 Heh, cool! I hadn't seen those before.. I don't know if the 1.5A max would really suffice though.. My usual design is good for 3A with silimar effieciency.. And, you wouldn't want to leave in the 7812/7905 as having then unloaded would actually generate a bit more heat, as they would have to dissipating more excess current because the devices aren't there to pull some of it.. That being said, if there is no reason for the +12 or -5 any more, just get rid of the circuit completely.. I'm pretty sure the -5 wouldn't be miseed, but the 12v at least is on the SIO connector.. Quote Link to comment Share on other sites More sharing options...
BillC Posted December 4, 2013 Share Posted December 4, 2013 Heh, cool! I hadn't seen those before.. I don't know if the 1.5A max would really suffice though.. My usual design is good for 3A with silimar effieciency.. And, you wouldn't want to leave in the 7812/7905 as having then unloaded would actually generate a bit more heat, as they would have to dissipating more excess current because the devices aren't there to pull some of it.. That being said, if there is no reason for the +12 or -5 any more, just get rid of the circuit completely.. I'm pretty sure the -5 wouldn't be miseed, but the 12v at least is on the SIO connector.. Replacing the OS/RAM boards with an Incognito should reduce power consumption by quite a bit. 1.5A may be sufficient, it is for the 600XL/800XL/XE computers. Most other 7805 drop-in replacements I've found are double/triple the price for only 1A. I was under the impression that linear regulators only had to dissipate the heat of the voltage drop(input-output) X current, if there's no current shouldn't there be little/no heat to dissipate? I looked at the schematic of the 800 PS board and there doesn't appear to be a 7905, it looks like they just used an 5.1V Zener diode(CR201) instead. It also looks like the -5V circuit is used for the power LEDs(CR210/CR211). There were few peripherals that used +12V from SIO since this was only available on the 400/800. It also appears that the 7805 doesn't supply all the +5V current, R203 is a 33ohm 2watt resistor bridging the 7805 input/output. This should be eliminated if replacing the 7805 with a switching regulator of sufficient capacity. Quote Link to comment Share on other sites More sharing options...
Subby Posted December 9, 2013 Share Posted December 9, 2013 Move me from Maybe to Definitely. (I'll just have to sell some of this stack of TI-99s I've ended up with) Quote Link to comment Share on other sites More sharing options...
TheEditor Posted December 9, 2013 Share Posted December 9, 2013 What is the next step here? Can we get pricing and payments started? Quote Link to comment Share on other sites More sharing options...
Joe Stella Posted December 10, 2013 Share Posted December 10, 2013 Sounds good to me. By my count I'm at 8 now. Quote Link to comment Share on other sites More sharing options...
Christopher Strong Posted December 14, 2013 Share Posted December 14, 2013 I previously said three. I'd like to increase that to five. Any idea of final pricing? Quote Link to comment Share on other sites More sharing options...
candle Posted December 15, 2013 Share Posted December 15, 2013 At current exchange rates it's 89USD or 270pln (price in PLN is constant between the batches, economy changes) Anyone takinng more than they really need - i would like to keep this batch low, and i understand you might be willing to stock up as there are little chances there will be yet another run I just hope you keep up your words when there will be a time for a payment I should send everyone a PM with details on how to pay and with some timelines by this time tomorrow in general, i would expect it to take 2-3 months minus the time needed for fundrising (i'm able make some purchasments of required parts when i'll be almost certain i will have the money to cover all related expences) Sebastian Quote Link to comment Share on other sites More sharing options...
Panther Posted December 15, 2013 Share Posted December 15, 2013 Aaah! Hurry up before the U.S. dollar falls anymore! Quote Link to comment Share on other sites More sharing options...
candle Posted December 15, 2013 Share Posted December 15, 2013 have to sleep, sorry :/ i'll get to it when i'm off my work tomorrow Quote Link to comment Share on other sites More sharing options...
candle Posted December 18, 2013 Share Posted December 18, 2013 just to say that all PM regarding payment methods were sent out through PM, so if any of you haven't received one - let me know Quote Link to comment Share on other sites More sharing options...
vazquezrick Posted December 19, 2013 Share Posted December 19, 2013 PM sent Quote Link to comment Share on other sites More sharing options...
Christopher Strong Posted December 19, 2013 Share Posted December 19, 2013 Got the PM. I had asked for 3, than changed it to 5. How many do you have reserved for me, so I can send proper payment? I'd actually be interested in a couple more, if people bail out and/or purchased more than thay need. Thanks! Quote Link to comment Share on other sites More sharing options...
Panther Posted December 19, 2013 Share Posted December 19, 2013 I don't need six, and would rather take a target of three, so by all means, how many do you want? We need an updated count. Quote Link to comment Share on other sites More sharing options...
BillC Posted December 19, 2013 Share Posted December 19, 2013 Got the PM. I had asked for 3, than changed it to 5. How many do you have reserved for me, so I can send proper payment? I'd actually be interested in a couple more, if people bail out and/or purchased more than thay need. Thanks! Candle has you down for 3 on the preorder list, there were extras ordered by Joe Stella(7) and Panther(3) to meet the 40 required for a minimum order. At this rate all the extras will probably be spoken for before they are even ready for shipping. Quote Link to comment Share on other sites More sharing options...
Panther Posted December 19, 2013 Share Posted December 19, 2013 Maybe I should just pay for three now, then I can pay for more later if needed. Quote Link to comment Share on other sites More sharing options...
BillC Posted December 19, 2013 Share Posted December 19, 2013 Maybe I should just pay for three now, then I can pay for more later if needed. The issue is Candle requires funds and will most likely need payment before commiting to ordering parts/circuit boards Quote Link to comment Share on other sites More sharing options...
Subby Posted December 19, 2013 Share Posted December 19, 2013 PM sent. Quote Link to comment Share on other sites More sharing options...
Dragon375 Posted December 20, 2013 Share Posted December 20, 2013 I sent Candle a PM a few minutes ago, and as soon as he approves my math my payment will be on the way. I am really looking forward to receiving these! Quote Link to comment Share on other sites More sharing options...
candle Posted January 2, 2014 Share Posted January 2, 2014 Happy New Year Everyone Here is updated list - hopefully every paymend is marked - if not, please do inform me, and please - put your AAge nickname when making a transfer - it will make my life much easier Quote Link to comment Share on other sites More sharing options...
Joe Stella Posted January 7, 2014 Share Posted January 7, 2014 Happy New Year indeed Monies sent. Quote Link to comment Share on other sites More sharing options...
vazquezrick Posted January 7, 2014 Share Posted January 7, 2014 The list does not seem to be available. Can anyone else see the list? Thanks Quote Link to comment Share on other sites More sharing options...
+videofx Posted January 14, 2014 Share Posted January 14, 2014 Can I get 1 board or are they all gone? Quote Link to comment Share on other sites More sharing options...
Dragon375 Posted January 15, 2014 Share Posted January 15, 2014 Outstanding! I see my payment on the pre-order list! Now I just gotta chill till it gets here, damn I am one happy camper! Quote Link to comment Share on other sites More sharing options...
MrMartian Posted January 15, 2014 Share Posted January 15, 2014 Yeah, I'm not sure which is worse.. Finding out about this after I couldn't get one anymore (after second run), or now that I know it's coming and I really want it... Especially after seeing fjc's new flasher program coming along! Quote Link to comment Share on other sites More sharing options...
candle Posted January 21, 2014 Share Posted January 21, 2014 videofx: contact Joe Stella as he and Panther are buying more than they need just to make this run happend next week i'll order parts and pcb boards Quote Link to comment Share on other sites More sharing options...
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