| 摘要 |
<p>An improved alternator/starter testing device includes an electronic voltage regulator (ER) for regulating the output of an externally regulated alternator (A1). A selectable load switch (SW4) allows so-called "high output" alternators to be tested without damaging the voltage regulator. For certain types of internally regulated alternators, the testing device includes a meter disconnect circuit, coupled to an "energize" switch in the testing device, which operates to disconnect the testing meter (M1) during a period in which the energize switch (SW8) is temporarily depressed to supply power to an internally regulated alternator under test (A1), thus preventing misleading test results if a defective alternator is tested. Internal thermal circuit breakers (CB1, CB2, CB3) are provided at strategic locations in the testing device to prevent internal circuit damage due to defective alternators and starters. A delay off timer circuit (TM1; Fig. 2) disconnects power from a starter under test (ST) after a predetermined time period in order to prevent damage to the starter due do overtesting.</p> |
