Wednesday, March 25, 2009
Friday, March 13, 2009
delayed on schematic
the 2n3904 emitter to base breaks down at about 8 volts. But my 2n2222 starts conducting from collector. Also, I think I need two 2n2222's as a darlington pair, to amplify the signal enough to trigger the Tip35c.. The relay is because the signal up to that point is not a square wave...
Thursday, March 12, 2009
Wednesday, March 11, 2009
Tuesday, March 10, 2009
the delayed pulse coil circuit triggered by reed switch to push pendulum
The gap on the left near source battery is the reed switch
Sunday, March 8, 2009
Friday, March 6, 2009
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