Transistor Amplifier Diagram. Transistors are turned off while working in the cut off region. In the previous introduction to the amplifier tutorial we saw that a family of curves known commonly as the output characteristic curves relate the transistors collector current ic to its collector voltage vce for different values of the transistors base current ib.

Transistors are turned off while working in the cut off region. C6 must be grounded near to the q1 and c5 must be grounded near to the loud speaker ground. In the previous introduction to the amplifier tutorial we saw that a family of curves known commonly as the output characteristic curves relate the transistors collector current ic to its collector voltage vce for different values of the transistors base current ib.

Biasing means setting up the correct dc operating voltages between input leads of a transistor.

The circuit diagram of a single stage common emitter rc coupled amplifier using transistor is shown in fig1. 4 transistor class ab amplifier. Circuit diagram of 4 transistor amplifier. One junction is between the emitter and the base and is called the emitter junction.