I have to charge my battery every 2 or 3 weeks to start the engine. The battery light comes on with the key and goes off when the engine srarts.I checked the alternator running about 18v ac. I checked the battery while running at 11.8 v [approx]. It did not seem to go any higher. How is the ac converted to dc? There are no diodes visible in the alternator.Is there a rectifier someplace in tha circuit??
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