RPM Sensors: Tachometers

Tachometers are basically frequency counters, simplified and interfaced to motor RPM sensors.

LM2917N based Frequency to Voltage Tachometer

Also:

• Motors
• Speed sensors
• Motor Regulation
• Microchip PIC based Tachometer

See also:

• http://www.edn.com/index.asp?layout=article&articleid=CA6399101&ref=nbdi&industryid=44217&q=Tachometer A small PIC based tachometer display.