1. The voltage across R 2 forward biases the emitter junction. 2. The latter dominates under forward bias while the former dominates under reverse bias. 3. Forward bias ( positive to positive ), reverse bias ( negative to negative ).4. The forward bias causes a force on the electrons pushing them from the N side toward the P side. 5. Note that, in general, 3 volts P to N forward bias would be sufficient to burn out most diodes. 6. There is also a recovery concern where the current will not decrease immediately when it is switched from forward bias to reverse bias. 7. I agree that 3 volts of forward bias might fry the device . talk ) 16 : 06, 2 March 2012 ( UTC) 8. For even rather small " forward bias " voltages the exponential is very large, since the thermal voltage is very small in comparison. 9. The Shockley diode equation doesn't describe the " leveling off " of the I V curve at high forward bias due to internal resistance. 10. Photoelectric diode in " forward bias " configuration, used for measuring the work function " W " e of the illuminated emitter.
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