# Differences

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 university:courses:electronics:electronics-lab-12 [05 Mar 2019 12:27]Antoniu Miclaus [Questions:] university:courses:electronics:electronics-lab-12 [23 Aug 2019 13:07]Antoniu Miclaus Both sides previous revision Previous revision 23 Aug 2019 13:07 Antoniu Miclaus 12 Jul 2019 13:38 Pop Andreea [Activity 12. BJT Differential pair] 05 Mar 2019 12:27 Antoniu Miclaus [Questions:] 22 Jan 2019 14:14 Antoniu Miclaus add ltspice files07 Dec 2018 13:35 Antoniu Miclaus [Questions:] add Fritzing files05 Sep 2017 14:43 Antoniu Miclaus add breadboard circuits + plots04 Sep 2017 15:39 Doug Mercer [Measuring Common Mode gain] 24 Jul 2017 15:33 Antoniu Miclaus change amplitude value to peak-peak24 Apr 2017 08:32 Antoniu Miclaus rename23 Mar 2017 16:20 Doug Mercer [Materials:] 14 Dec 2012 21:24 Doug Mercer [Questions:] 28 Oct 2012 20:19 Doug Mercer created Next revision Previous revision 23 Aug 2019 13:07 Antoniu Miclaus 12 Jul 2019 13:38 Pop Andreea [Activity 12. BJT Differential pair] 05 Mar 2019 12:27 Antoniu Miclaus [Questions:] 22 Jan 2019 14:14 Antoniu Miclaus add ltspice files07 Dec 2018 13:35 Antoniu Miclaus [Questions:] add Fritzing files05 Sep 2017 14:43 Antoniu Miclaus add breadboard circuits + plots04 Sep 2017 15:39 Doug Mercer [Measuring Common Mode gain] 24 Jul 2017 15:33 Antoniu Miclaus change amplitude value to peak-peak24 Apr 2017 08:32 Antoniu Miclaus rename23 Mar 2017 16:20 Doug Mercer [Materials:] 14 Dec 2012 21:24 Doug Mercer [Questions:] 28 Oct 2012 20:19 Doug Mercer created Line 1: Line 1: - ====== Activity ​12. BJT Differential pair ====== + ====== Activity: BJT Differential pair ====== ===== Objective: ===== ===== Objective: ===== Line 38: Line 38: ​ Figure 3 Differential pair with tail resistor Breadboard Circuit ​ Figure 3 Differential pair with tail resistor Breadboard Circuit ​ - The first waveform generator should be configured for a 200 Hz Triangle wave with 4 volts amplitude and 0 offset. The second generator should be configured also for a 200 Hz Triangle wave with 4 volts amplitude and 0 volts offset but with 180 degree phase. The resistor dividers will reduce the signal amplitude seen at the bases of Q<​sub>​1​and Q<​sub>​2​to slightly less than 200 mV. Channel one of the scope should be connected with 1+ to the output of the first generator, W1 and 1- connected to W2. Channel 2 should be connected to display 2+ and 2- and set to 1V per division. + The first waveform generator should be configured for a 200 Hz Triangle wave with 4 volts amplitude ​peak-to-peak ​and 0 offset. The second generator should be configured also for a 200 Hz Triangle wave with 4 volts amplitude ​peak-to-peak ​and 0 volts offset but with 180 degree phase. The resistor dividers will reduce the signal amplitude seen at the bases of Q<​sub>​1​and Q<​sub>​2​to slightly less than 200 mV. Channel one of the scope should be connected with 1+ to the output of the first generator, W1 and 1- connected to W2. Channel 2 should be connected to display 2+ and 2- and set to 1V per division. ===== Procedure: ===== ===== Procedure: =====