- DG1032 set to 1MHz, 10mVrms at Zout steps
- Oscilloscope Vrms calibrated to DG1032
- Adjust RE for Vin = 10mVrms (Oscilloscope Vrms function)
- Adjust RL for VC = 6Vdc
- Measure IE
- Ideal diode thermal voltage at 300K, kT/q = 25.85mV
- Measured thermal voltage = 30mV
- Non-ideal diode thermal voltage, nkT/q, where n = ideality factor.
- Measured ideality factor = 30/25.85 = 1.16
- High current error contributions:
- Transistor temperature rise
- Solderless breadboard loss
- DG1032 to breadboard coax loss
- VNWA independent verification:
- 500kHz
- Soldered breadboard
- Calibration plane at breadboard
- Does not include 47uH emitter choke
|
