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Simpli f ed T Model Figure 1 shows the T model with a Thévenin source in series with the base. We wish to solve for an equivalent circuit in which the source i 0 c connects from the collector node to ground rather than from the collector node to the B 0 node. The f rst step is to replace the source i 0 c with two identical series sources with the common node grounded. The circuit is shown in Fig. 2(a). Figure 1: T model with Thévenin source connected to the base. Figure 2: (a) Circuit with the i 0 c source replaced by identical series sources. (b) Simpli f ed Tmode l . For the circuit in Fig. 2(a), we can write v e = v tb − i 0
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This note was uploaded on 05/26/2011 for the course ECE 3050 taught by Professor Hollis during the Summer '08 term at Georgia Institute of Technology.
- Summer '08