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Summary of change:
---- '''RPM (tachometer gauge) output''' for the dash gauge * some dash only require a 1k pullup to +12V, and that's all. (or a stepper output that can pull to +12V, not only towards ground). ** VEMS can be configured to send a frequency signal out via this output channel. Calibration allows fine-tuning, or even that a 4cyl dash-gauge can be used with a 5cyl or 6cyl engine. Other (mostly older) dashes require high voltage input: an IGBT output and ''220 uH for RPM output "inductive pullup"'' See [http://shop.vems.hu/catalog/product_info.php?cPath=1_15&products_id=102 shop item] inductor back to MembersPage/EvertDuindam
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