Nov 30, 2004 #1 M Markie Junior Member level 2 Joined Nov 16, 2004 Messages 24 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,281 Activity points 215 I read the lee's Rf circuits book, I am confused. In ch7, hwo he can say that using short circuit time constants methods, what happens to the low-frequency gain if we take the following fig's Cin and Ce out of the circuit?
I read the lee's Rf circuits book, I am confused. In ch7, hwo he can say that using short circuit time constants methods, what happens to the low-frequency gain if we take the following fig's Cin and Ce out of the circuit?
Dec 4, 2004 #2 M mosheavi Junior Member level 1 Joined Nov 29, 2004 Messages 15 Helped 1 Reputation 2 Reaction score 0 Trophy points 1,281 Activity points 118 I used this configuration with npn transistors for AMP from DC - to 120Mhz 0-70v output. So, you can take Ce and Cin out but you will have to take care for the DC Bias level - in temeperature etc. The gain will be G=Vout÷Vin ≈ Rd÷Re (from ≈ dc to fc)
I used this configuration with npn transistors for AMP from DC - to 120Mhz 0-70v output. So, you can take Ce and Cin out but you will have to take care for the DC Bias level - in temeperature etc. The gain will be G=Vout÷Vin ≈ Rd÷Re (from ≈ dc to fc)