For pt.I see ibid., vol.15, no.10, p.24-9 (1979). Describes an engine RPM indicator which uses pulses from the distributor. These are counted by means of a frequency controlled diode pump and a LM2917 frequency to voltage convertor. The speed is displayed on a bar graph using LEDs.
Solid state car instruments. II. Rev. counter
Festkoerperschaltungen fuer Fahrzeuginstrumente II Tachometer
Practical Electronics ; 15 , 11 ; 18-21
1979
4 Seiten
Article (Journal)
English
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