This message is in MIME format. The first part should be readable text, while the remaining parts are likely unreadable without MIME-aware tools. Send mail to mime@docserver.cac.washington.edu for more info. --222610757-1770938120-1036470403=:21039 Content-Type: TEXT/PLAIN; charset=US-ASCII OK, I did some desoldering and hacking tonight to test one possible configuration and see how it would work. I removed the old regulator circuit and replaced it with my own. See attached schematic - an LM317T driving the bases of the two 2N5885 power transistors. I omitted a couple of 2200uF caps on the input side of the regulator, two more on the collectors of Q1 & Q2. When I unplug J3, disconnecting the regulator from the transistors, I get a nice solid stable 28.5V from the LM317, and I can adjust it up or down. As soon as I connect the regulator output to the transistor bases, I measure 44.0V on the output of the LM317 and at the transistor bases. No adjustment regardless of the pot setting. The collectors of Q1 & Q2 are at 44.7V. This happens with or without a load on the emitters of Q1 & Q2 - I used a 100 Ohm resistor for a test load. No appreciable difference with or without it. The LM317 stays cool the whole time. I don't measure any obvious collector-base shorts on Q1 or Q2, but it sure is acting like it. Or am I missing something? Dale --- We are Dyslexia of Borg. Fusistance is retile. Your ass will be laminated. --222610757-1770938120-1036470403=:21039 Content-Type: IMAGE/png; name="TS930pwr.png" Content-Transfer-Encoding: BASE64 Content-ID: Content-Description: Content-Disposition: attachment; filename="TS930pwr.png" iVBORw0KGgoAAAANSUhEUgAAAp8AAAKOCAIAAABvAOVhAAAXZ0lEQVR4nO3d 6bKbSKKFUXHD7414cu4PumTMJIQQkJu1oqrjWBO0dUqfMpmqtm0fAECQ/zt7 BQCAnak7AKRRdwBIo+4AkEbdASCNugNAGnUHgDTqDgBp1B0A0qg7AKRRdwBI o+4AkEbdASCNugNAGnUHgDTqDgBp1B0A0qg7AKRRdwBIo+4AkEbdASCNugNA GnUHgDTqDgBp1B0A0qg7AKRRdwBIo+4AkEbdASCNugNAGnUHgDTqDgBp1B0A 0qg7AKRRdwBIo+4AkEbdASCNugNAGnUHgDTqDgBp1B0A0qg7AKRRdwBIo+4A kEbd4aaapjl7FYBf+XP2CgA/JOFwT+oO4eq6nrxd+CHY/nWvmur1c1u3/dv7 f5y8ZeXrj1+n/8fXvZOv/7px8KzB2i68LBSkruumaeYCD6Tav+5t3c5le1vO B6+w/JrjByxY+LbxzcvCpcylXfIhWEl71a35ctB9t9j2+gvP/eZlAeBgh253 XxjWv7Xyib9rsJl5CrWwfd3wHVKVsVfd+rQbZEPf3EZ3G+Mh29Ez8xvq2z2+ aqrun9fP44cZXsMaXdrtMw/BThi7fzo/v2ZPe2mHlYza4Q5K2qtuzlzax/ME vgSAtMMdnFP3fbeOLwS7v6Av025zPgClSBi7940Tvv6bxEL+DfoJY34esv3q 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