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Test Your Car's Alternator Like a Pro – Easy Methods to Check Voltage Regulator and More

This video covers the essential steps to properly test a car's alternator and diagnose common alternator issues. The guide ...
EDN15y

Circuit lets you measure zener voltages and test LEDs - EDN

Figure 4 shows an assembled zener-diode-tester circuit. The zener diode under test is On Semiconductor ‘s BZX55C15RL, which has a working voltage of 13.8 to 15.6V. The voltage in Figure 4was measured ...