Bench Testing: Diodes
- Connect a 12-volt battery lead, with a 1.5-watt (maximum) test lamp connected in series, to a diode plate. Connect other battery lead, in turn, to each diode pin. See Fig 1. Then reverse the connections.
Test lamp should be 1.5 watts maximum .
- Lamp should light (with current flow) in one direction only. If lamp lights in both directions or fails in both, rectifier pack must be renewed.