Jig for testing the noise characteristics of NPN transistors with reverse-biased base-emitter junctions

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• Article «A non-finicky, mass-producible audio frequency white noise generator»
• Figure 2. The general form of an MLS generator. A reference lists a table of 2 to 5 specific taps for register lengths from N = 2 to 32 to produce repeating sequences of length 2^N-1. Register initialization must include at least one non-zero value. The a
• Figure 3. Jig for testing the noise characteristics of NPN transistors with reverse-biased base-emitter junctions
• Figure 5. The equivalent input noise and test circuit for the TLVH431B (Figure 5-9 in the part's datasheet)
• Figure 6. The test jig for TLVH431B spectral noise. There was no significant difference in the results shown in Figure 7 when values of 1 kΩ and 10 kΩ were used for R. 100 kΩ and 1 MΩ resistances supplied insufficient currents for the devices' operation