Semiconductor Electronics Materials Devices And Simple Circuits

The relationship between the peak rectified voltage ( ) and the average rectified voltage ( ) for a full-wave rectifier is given by the following formula:

Given that the peak rectified voltage is we can substitute this value into the formula to find the average rectified voltage:

Conclusion: The approximate average rectified voltage for a full-wave rectifier with a peak rectified voltage of 15V is .

The maximum power rating of the transistor can be expressed as the product of the collector current and the collector-emitter voltage , i.e.:

We are given the following values:

• Maximum power rating
• Collector-emitter voltage

Now, we can rearrange the equation to solve for the maximum collector current :

Substitute the given values into the equation:

Conclusion: The maximum collector current that the transistor can handle is .

The ideal voltage gain of a JFET is given by the formula:

Where:

• is the transconductance of the JFET (in Siemens)
• is the external AC drain resistance (in ohms)

Given:

• Transconductance
• External AC drain resistance

Now, substitute these values into the formula to find the voltage gain:

Conclusion: The ideal voltage gain is 60.