PerTronix Digital Rev Limiters

PerTronix digital rev limiters are micro-controller based digital units that provide much greater accuracy than analog systems. Rotary switches with 100 rpm increments permit easy setting, and eliminate the need for chips or jumpers commonly found on other limiters. They control rpm by randomly stealing sparks, reducing the fouling common with other brands. Each of these units includes two analog filters and one digital filter to eliminate unwanted entry of voltage noise from the coil. Plus, a tachometer output with a TTL interface makes these limiters compatible with most of today's OEM and aftermarket tachometers.