Jenny, I love this series, but paragraph 4 of the common emitter biasing discussion should say, “In an NPN transistor, the connection between base and emitter is a PN junction, so as you might ...

A 1 kΩ collector resistor and a 330 kΩ base resistor has never failed me for a small-signal self-biasing audio amplifier, I’m nothing if not a creature of habit.

A BJT transistor with an emitter degeneration resistor (R e) is shown in Figure 1.Figure 1 A BJT transistor with an emitter degeneration resistor (R e). Note the following equations for the transistor ...

IT is well known that changes in the d.c. characteristics of transistor amplifiers with temperature are particularly severe, and tend to limit the range over which these devices can operate. The d ...

One diode from a matched pair is used for the emitter load (D2), and D3 is a reference diode employed to enable differential measurements. The diodes are 1N4148-type devices.

The current exiting through Q6’s emitter passes through resistor R5 to provide current to the load through the output terminal. R10 and R11 divide the output voltage to D2’s reference terminal.