P-Channel FET Amp: Deriving Output Voltage

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The discussion focuses on a buffer amplifier schematic that uses a p-channel FET as the input, which is part of a sweep oscillator generating ramp voltage through capacitors C3 and C4. The circuit operates by charging these capacitors with a constant current, while Q2 functions as a switch or buffer. The gate of the p-channel FET, Q3, responds to the rising voltage across the capacitors, amplifying it from -5 to 5 volts in conjunction with Q1. The original poster sought to derive an expression for the output voltage based on the input voltage at the gate of Q3 but ultimately found a solution. This exercise highlights the complexities and learning opportunities associated with p-channel FETs in amplifier circuits.
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I came across a schematic of a buffer amplifier utilizing a p-channel fet as input. It is from a sweep oscillator generating a ramp voltage by charging C3 and C4 with a constant current, (current source is not shown, Q2 just acts as a switch or buffer). Now as the voltage rises linearly across C3 or C4 the gate of the p-channel fet Q3 picks it up and the amplifies it from -5 to 5 volts in conjunction with Q1.

So what I'm trying to accomplish is to derive an expression of the output voltage (-5 to 5) as a function of the input voltage at the gate Q3. P channel fets always confused me.
 
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Never mind I solved this, a good exercise though.
 
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