> From: Lee Hart <[email protected]> > > ... IC comparators are intended for voltages under 30 volts. It > takes a lot of parts to use them to compare higher voltages.
It actually isn't that bad. A simple voltage divider (two resistors) can do it. Another possibility is a zener diode to eat up the excess voltage. The problem with both these techniques is variance, which you can deal with via a trim pot. Another problem might be temperature sensitivity, but if you use similar components on both arms, the temp coefficients should cancel each other out. :::: The primary impediment to community is the stranglehold that hierarchical corporate-driven models of employemnt have on individuals. They so completely drain the life-energy of people in endeavors that are only marginally related to survival or fun that when people return home at the end of the day they're exhausted, suitable only for a few hours of TV and dropping into bed. -- Thom Hartmann :::: Jan Steinman, EcoReality Co-op :::: _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA)
