This project is a tester for bridge rectifiers and LEDs. It contains a transformer that outputs 22 volts open circuit when powered by my isolation transformer. It contains an internal bridge rectifier which powers the LED tester. The bridge rectifier tester works by sending either half of the sine wave transformer output to the bridge rectifier to test each pair of diodes. If the bridge rectifier is good, the LED will light on both polarity switch settings.
The connectors are 4 pin .1 inch for the bridge rectifier tester and 6 pin .1 inch for the LED tester. 3 pins are positive and 3 pins are negative. I stick an LED into the connector with 1 pin into each side. If the LED is good and the polarity is correct, it will light.
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