Simple electronic circuit will tell you if there is anything wrong with your car alternator by analyzing the whine. Est. cost: $1.
CQ. THE RADIO AMATEUR'S JOURNAL Jan 1979 (v.35#1) pg. 101
Car battery and alternator monitor circuit (a simple voltage comparator). A green LED lights if your alternator is working properly. A red LED comes on if the alternator malfunctions and the battery is being drained. Est. cost: $5 (kit).
ELECTRONICS HOBBYISTS HANDBOOK 1991 pg. 63
Testing and repairing alternators.
POPULAR MECHANICS Feb 1984 (v.161#2) pg. 39
Maintaining your automobile charging system. Troubleshooting and repairing the alternator, voltage regulator, and battery.
POPULAR MECHANICS Feb 1992 (v.169#2) pg. 115
Automotive charging systems. Part 1. An overview of how they operate and a regulator circuit designed to work with a pulled-up field.
RADIO-ELECTRONICS Dec 1991 (v.62#12) pg. 75
Automotive charging systems. Part 2. More on voltage regulators.
RADIO-ELECTRONICS Jan 1992 (v.63#1) pg. 75
Added Info RADIO-ELECTRONICS May 1992 (v.63#5) pg. 82
Tip on regulating the output of third brush generators.
SKINNED KNUCKLES #163 Feb 1990 (v.14#7) pg. 35
Fundamentals of Delco-Remy voltage and current regulators used on automobiles.
SKINNED KNUCKLES #180 Jul 1991 (v.15#12) pg. 22
Delco-Remy passenger car and truck generators. Technical information on several styles is excerpted from Delco-Remy service bulletins.
SKINNED KNUCKLES #193 Aug 1992 (v.17#1) pg. 25
Adjustments, tests and maintenance of Delco-Remy generators.
SKINNED KNUCKLES #194 Sep 1992 (v.17#2) pg. 21
North East generators. Excerpts from Delco-Remy service bulletins.
SKINNED KNUCKLES #197 Dec 1992 (v.17#5) pg. 29
Servicing the postwar Volkswagen Beetle. Part 8. Generator and alternator troubleshooting.
SKINNED KNUCKLES #240 Jul 1996 (v.20#12) pg. 17
Servicing the postwar Volkswagen Beetle. Part 9. Generator overhaul.
SKINNED KNUCKLES #241 Aug 1996 (v.21#1) pg. 11
Chevrolet Corvair generator charging circuit servicing.
SKINNED KNUCKLES #277 Aug 1999 (v.24#1) pg. 23
Chevrolet Corvair alternator charging circuit servicing.
SKINNED KNUCKLES #278 Sep 1999 (v.24#2) pg. 25