Wayne Parham Messages: 18788 Registered: January 2001
Illuminati (33rd Degree)
You could use a pickup like that, you betcha. Connect it to a pulse counter and you're set. You might use a timing light with an inductive pickup. Some even have built-in tachometers.
Don't use a DVM though. The signal you're reading is a pulse train, and so the DVM will not read it like you want. It won't show the rate of pulses. It will just show the DC level, and maybe bounce a bit occasionally when it happens to sample at the time a pulse flies by.