VR conditioner Dual-Channel (MAX9924)

The Dual-Channel VR Conditioner was designed to ensure precise reading of Variable Reluctance (VR) sensors, even under extreme noise conditions or very low engine speeds.
This version uses two MAX9924 integrated circuits, known for their high stability and accuracy when converting AC VR sensor signals into clean digital outputs, ideal for standalone ECUs.

Key Features

• 2 independent channels (crank + cam)

• Based on two MAX9924 chips – equivalent performance to the MAX9926 in a modular format

• Adaptive Peak Threshold for stable readings even with weak signals

• Zero-crossing detection for extremely accurate pulse generation

• Differential input with excellent noise immunity

• 5V digital output ready for ECUs, microcontrollers, and ignition systems

• Fully compatible with setups that typically use the MAX9926

Advantages

• Clean signal even during very low cranking (<200 RPM)

• Greatly reduces false triggers and sync loss

• Ideal for old, weak, or noisy VR sensors

• Excellent solution for BossECU, Speeduino, MegaSquirt, and other standalone ECUs

Applications

• Reading VR sensors for crankshaft, camshaft, ABS, and speed wheels

• Upgrading systems that normally use the MAX9926 to a modular MAX9924-based alternative

• Prototyping ignition or fuel-injection systems

Includes

• 1× Dual-Channel VR Conditioner Module (2× MAX9924)