Alternator Linearisation Device (12 V)

(NOTE: ALD DEVICES ARE BUILT BY HAND IN THE UK. PLEASE ALLOW LONGER DELIVERY PERIODS FOR MANUFACTURE TO ORDER).

The ALD12 stabilises the behaviour of modern 12 V alternators by extracting a clean, predictable signal from the raw, multi-pulse rectified output. It converts the noisy alternator waveform into a linear, stable voltage reference that downstream equipment can actually use.

Many systems that rely on alternator sensing—split-charging devices, external regulators, battery-to-battery chargers—misbehave when faced with ripple, voltage drop, or transient loading. The ALD12 removes that instability.

Key functions

Absorbs massive and destructive voltage spikes that are expected to occur if an alternator load is disconnected during operation (Lithium BMS interrupting charge, fuses blowing, large changes in loads, cables disconnecting)

Normalises alternator output into a clean, stable reference.

Ensures sensitive electronic equipment such as DC/DC chargers sense the alternator correctly.

Stabilises voltage readings on vehicles with ageing alternator diodes or high-current loads