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Home Grounded Emitter and Grounded Collector Transistors The Grounded Collector Connection Voltage Gain  
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Voltage Gain in the Grounded Collector ConnectionAuthor: Leonard Krugman The voltage gain, as defined in equation 324 by the general fourterminal parameters is: Under the conditions for infinite input resistance and infinite current gain (R_{L} = r_{22}), the voltage gain becomes: For a perfect buffer stage R_{c} + r_{c} r_{m} = 0. Thus, the voltage gain equation becomes The maximum voltage gain as defined by equation 325 is ; this becomes. For the typical pointcontact transistor, when R_{L} = 15,000 ohms and R_{g} = 10 ohms, Under the conditions R_{L} = r_{22} = 11,850 ohms VG = = .985 Under the conditions R_{c} + r_{c} = r_{m} (R_{c} = 12,000 ohms) The maximum voltage gain For the typical junction transistor, R_{L} = 100,000 ohms, R_{g} = 10 ohms The maximum voltage gain Notice that in all of the above cases, the voltage gain is slightly less than unity. This is typical of the grounded collector connection.


Home Grounded Emitter and Grounded Collector Transistors The Grounded Collector Connection Voltage Gain 