/vr/ - Retro Games

>>1883312
Results:
Original transistor back and i connected a 22k pot between the base and ground and it's wiper to the amp = Pretty good, but linearity is still a little off.
Now a 2.2K pot between the emitter and power and it's wiper to the amp and 330ohms to ground = Blurry, but the linearity is correct.
Now with the transistor removed, any kind of resistance lower than 100Kohm to power = Sharp but bad linearity.
Now same with more than 100kohm = Very blurry but somewhat correct linearity.
Conclusion: The RGB outputs of PPU2 can't seem to sink more than 5V/100Kohm=50µA (i assume) without linearity distortion.

Now i connected a 2N3906 in a similar way as the original and used a 2.2K pot to power and a 10µF capacitor to the amp.
Looks like i'm done with this.