common source mosfet amplifier

[kavkav]

I'm using IRF610 Mosfet
https://pdf1.alldatasheet.com/datashe...LD/IRF610.html

to build a common source amplifier. The mosfet is n-channel enhancement mode.

I have read everything I could find on mosfets, read my lectures and still I don't understand how to do this. This is the best schematic I could find but I have no idea how to choose my resistor values:

**broken link removed**

I would greatly appreciate if someone could could guide me through this because everything I've come across, uses formulas which require a "gm" value or "k" parameter or "W/L" parameter and non of these which I have. I can't even calculate my gain because it depends on what resistors I use.

SPECS:
Power Supply: 24 Volts DC
Signal Source: 1000Hz AC from function generator with 150 ohm internal resistance (can go from -5 to +5 volts in amplitude)
voltage Gain: voltage of signal should multiply by a factor of 3 (at least).
Current Gain: I don't know as long as power gain is significantly higher than signal source
V(th): 2 to 4 volts according to datasheet

Thanks.

 

[crutschow]

Some of your requirements are a little fuzzy ---

What is the maximum voltage you want to amplify?

Do you want maximum voltage gain or just a gain somewhat greater than 3.

What is the output load impedance?

What is the maximum amplifier supply current you can tolerate.

 

[kavkav]

My power supply is 24 Volts. My function generator gives a signal and the max voltage amplitude of the signal can be 5 Volts. So if the signal is at a constant 5Volts I want my output to be the same signal but with and amplitude of at least 15 Volts. If the signal Is 2 volts amplitude, I want the amplified version to be at least 15 Volts in amplitude. So I guess I'm saying the amplified signal should end up having at least 15 Volts of amplitude.

I prefer maximum voltage gain. So even if I can get an amplitude of 23 Volts from the 24 volt power supply I will be happy.

The output is going to be a step-up transformer. The wiring itself is 15 ohms. The inductance is 264 uH.

Maximum amplifier supply current I can tolerate is 2.5 Amps from my 24 Volt power supply.

Thank you for your reply.

 

[crutschow]

Is this a square-wave or sinusoidal signal?

You can't get the same signal output amplitude with different input amplitudes unless you vary the gain or clip the output. It sounds like you want a maximum output square-wave, independent of the input. Is that the case?

 

[kavkav]

The input signal will be a clean square wave. So I want the output to be a amplified version of that.