Car starter motors and alternators...

[Richard M]

How much power does each put out?

Can an alternator theoretically put out more power (in amps) than a regular starter motor can consume?

These specs are a little hard to come by on the net so I'm wondering if anybody here knows.
:confused:

[The Diplomat]

What exactly is the problem Roger? :)

Reason I ask is afaik the alternator only produces it's output once the engine is running. This would then typically be up to 14v.

[zoombini]

The starter motor consumes a LOT more than an alternator can produce, 100-250 amp is not unheard of.

Thats why we have big batteries that can give 90+ amps when needed.

I am informed that alternators can supply between 45-60 amp.
And yes as above, the alternator will not supply any current until the engine is running and turning it (obviously).

Hmm, now that sounds handy for some low voltage projects...

[Richard M]

Thanks for the reply Zoombini :)

I needed to know for an engineering project in the near future.