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1. [AMPS] E F Johnson Roller (score: 1): Author: gjerning@flash.net (Arne Gjerning); Date: Thu, 07 Jan 1999 21:41:04 -0800; I had a caliper and Johnson model 226-1 handy. The ribbon coil is .125 x .250 silver plated copper. This model has 5 turns wide spaced and the remainder close spaced. Johnson made other models beside; /archives//html/Amps/1999-01/msg00107.html (7,634 bytes)
2. [AMPS] E F Johnson Roller (score: 1): Author: km1h@juno.com (km1h@juno.com); Date: Fri, 8 Jan 1999 03:27:46 -0500; On Thu, 07 Jan 1999 21:41:04 -0800 Arne Gjerning <gjerning@flash.net> writes: Unshorted turns can result in a Tesla coil effect...lots of arcs! But shorted turns can result in a closed loop resonant; /archives//html/Amps/1999-01/msg00110.html (9,157 bytes)
3. [AMPS] E F Johnson Roller (score: 1): Author: measures@vc.net (Rich Measures); Date: Fri, 8 Jan 1999 01:43:59 -0800; ? Amen. And the short should contain minimal R. Rich... R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures -- FAQ on WWW: http://www.contesting.com/ampfaq.html Submissions: amps@contesting.c; /archives//html/Amps/1999-01/msg00115.html (7,682 bytes)
4. [AMPS] E F Johnson Roller (score: 1): Author: Peter_Chadwick@mitel.com (Peter Chadwick); Date: Fri, 8 Jan 1999 09:53:03 -0000; I've had problems with a transmatch by doing that. When most of the inductor is in use, and there's only a few shorted turns, the currents in them can cause problems - even at 150 watts. Similarly,; /archives//html/Amps/1999-01/msg00117.html (9,565 bytes)
5. [AMPS] E F Johnson Roller (score: 1): Author: measures@vc.net (Rich Measures); Date: Fri, 8 Jan 1999 02:54:38 -0800; ? As have I. ? Good advice, however, the switch and actuating mechanism adds complexity. A simpler workaround is to put 1 to 2 uH in series with the shorting circuit to automatically limit current t; /archives//html/Amps/1999-01/msg00118.html (8,140 bytes)

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