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--- electrical:12v:alternator_details [2022/04/26 12:30]
frater_secessus created
+++ electrical:12v:alternator_details [2022/04/26 12:41]
frater_secessus [common types of alternator]
@@ Line 49: / Line 49: @@
   * a normal regulator physically mounted elsewhere
-  * the vehicle's computer (ECU)
+  * the vehicle's computer (ECU) - voltage will likely vary somewhat
-  * an aftermarket regulator, like Balmar
+  * an aftermarket regulator, like Balmar - voltage often provides [[electrical:12v:charging|multistage (smart) charging]]
+**Smart alternators** are designed to support fuel mileage efforts.  Voltage might plummet during full accelleration (to free up engine power) then spike quite high in other conditions.  This wide variance means a DC-DC charger is required.  Note:  some smart alternators have a setting that allows them to be function like a standard alternator.
+**Heavy duty / high output alternators** - any of the above alternators can be build in heavy duty configuration, which typically connotes:
+  * higher current rating
+  * increased internal cooling (ie, more or better fans)
+  * ability to make more power in idling scenarios, which is useful for police vehicles, ambulances, and other vehicles that need to idle for long periods of time.
+HD alternators for any particular vehicle are typically bolt-in with no modifications required.  They do cost somewhat more.   The labor cost would remain the same so some people choose to upgrade the alternator when/if the OEM one fails.
-**Smart alternators**
-**Heavy duty / high output alternators**

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