One of the best tools I've purchased in a while is the Peak / Atlas Semiconductor. I have the DCA75 which has USB capabilities and can do some limited curve tracing, but the less expensive DCA55 (about $75) is also very capable. Widely available on E**y.
It lets you blindly connect up the leads, then identifies B/C/E hFE etc. It's saved my tail more than once! "The usual disclaimer", I have no relationship with the company etc. - Gary <http://www.ebay.com/itm/DCA55-Peak-Atlas-Semiconductor-Tester-Transistor-MOSFET-Diode-DCA-55-Analyser-/261487342261?pt=LH_DefaultDomain_0&hash=item3ce1dc32b5> On Monday, June 16, 2014 2:06:18 PM UTC-4, don caprio wrote: > > O perfect. More 'variables'. > > Thanks for the heads up Tom. > > > > On Mon, Jun 16, 2014 at 11:01 AM, Tom Lafleur <[email protected] > <javascript:>> wrote: > >> Something to look at. Some vendors of 2n3906/04 and other small single >> transistors have different pin orientation for their parts in TO92 case. C >> and E are swaped. Look at the vendors data sheet for your part, not a >> generic one. >> >> ~~ _/) ~~~~ _/) ~~~~ _/) ~~~~ _/) ~~ >> Sent from my Phone >> >> >> On Jun 16, 2014, at 12:16 PM, Don Caprio <[email protected] <javascript:>> >> wrote: >> >> Rich, >> >> I don't know if version 2 of the backplane suffers from the same error. >> >> I'm not even sure what version of the board I have. However I'm pretty >> sure mine is wrong. A peek with a magnifine glass shows the square >> pad on Q1 is opposite of Q2. Looks like I have to swap the orientation >> of Q1. I have not tested the backplane yet. >> >> >> >> On Sun, Jun 15, 2014 at 4:49 PM, Richard Cini <[email protected] >> <javascript:>> wrote: >> >>> Don — >>> >>> I have Version 02 of the 8-slot backplane (uncompleted) and Q1 has the >>> same footprint error. Is the fix to put the transistor in opposite to the >>> silkscreen? >>> >>> Rich >>> >>> -- >>> Rich Cini >>> Collector of Classic Computers >>> Build Master and lead engineer, Altair32 Emulator >>> http://www.classiccmp.org/cini >>> http://www.classiccmp.org/altair32 >>> >>> From: Don Caprio <[email protected] <javascript:>> >>> Reply-To: S100-Post <[email protected] <javascript:>> >>> Date: Friday, June 13, 2014 at 3:16 PM >>> To: S100-Post <[email protected] <javascript:>> >>> Subject: Re: [N8VEM-S100:4159] Re: S-100 Bus Extender and S-100 Bus >>> Terminator Boards Have Arrived >>> >>> I was looking at the S-100 18 slot backplane and saw notes on the >>> incorrect >>> footprint on transistor Q1. >>> >>> I have the 8 slot version and have no such notes on Q1. When I pull up >>> the docs from >>> the wiki I see that Q1 suffers from the same error. >>> >>> Can those of you that have the 8 slot board running confirm this board >>> suffers from the same error? >>> >>> Are any 18 slots boards available? >>> >>> Thank you. >>> >>> <8slotQ1Q2.png> >>> >>> >>> On 06/ 6/14 06:49 PM, Edward Snider wrote: >>> >>> Do you have me down for either of these Todd? >>> >>> I don't remember. >>> >>> Ed >>> >>> >>> On Friday, June 6, 2014 9:12:46 AM UTC-5, Todd Goodman wrote: >>>> >>>> The S-100 Bus Extender and S-100 Bus Terminator boards have arrived. >>>> >>>> http://s100computers.com/My%20System%20Pages/Extender% >>>> 20Board/Extender%20Board.htm >>>> http://s100computers.com/My%20System%20Pages/Terminator% >>>> 20Board/Bus%20Terminator%20Board.htm >>>> >>>> Please let me know if you'd like any. The usual price of $20 each >>>> plus $5.95 shipping in the US. If you're outside the US then I'll >>>> let you know the actual postage once I have the package set up and >>>> weighed. >>>> >>>> If you ordered other boards and want them to ship together that's no >>>> problem either. >>>> >>>> Thank you! >>>> >>>> Todd >>>> >>> -- >>> You received this message because you are subscribed to the Google >>> Groups "N8VEM-S100" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to [email protected] <javascript:>. >>> For more options, visit https://groups.google.com/d/optout. >>> >>> >>> -- >>> Don [email protected] <javascript:> >>> >>> -- >>> You received this message because you are subscribed to the Google >>> Groups "N8VEM-S100" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to [email protected] <javascript:>. >>> For more options, visit https://groups.google.com/d/optout. >>> >>> -- >>> You received this message because you are subscribed to the Google >>> Groups "N8VEM-S100" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to [email protected] <javascript:>. >>> For more options, visit https://groups.google.com/d/optout. >>> >> >> >> >> -- >> ------------------------------- >> Don Caprio [email protected] <javascript:> >> http://www.uxpro.com >> (925) 240-UNIX >> >> -- >> You received this message because you are subscribed to the Google Groups >> "N8VEM-S100" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected] <javascript:>. >> For more options, visit https://groups.google.com/d/optout. >> >> -- >> You received this message because you are subscribed to the Google Groups >> "N8VEM-S100" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected] <javascript:>. >> For more options, visit https://groups.google.com/d/optout. >> > > > > -- > ------------------------------- > Don Caprio [email protected] <javascript:> > http://www.uxpro.com > (925) 240-UNIX > -- You received this message because you are subscribed to the Google Groups "N8VEM-S100" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
