I picked up a couple of KP926 50w SITs. I was hoping to use these in a very small single ended amp like the Pass ACA with about 15 drain to source and 1.2A . This device is normaly on usualy has a - voltage at the gate but looking at the curves it looks like for my purpouse at 15v drain to source I may need a positive voltage on the gate. Anything wrong in doing this and any idea what the input resistance and capacidence might be when operated like this?
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The graph is showing ~100 ohm output impedance @ ~200ma, not sure what it will be @ 1.2A but won't get down much. I don't think it is suitable to drive 8 ohm load directly. Better a Nemesis type with 300-500 ohm primary output transformer.
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Use 8 in parallel with a source resistor of 10-14Ω each. All running at 150mA, source at 2.2V as in datasheet. Use a common drain current source (mosfet). Output impedance is approx #2 / 8 ~ 10Ω though.
Is a P-channel also available?
Is a P-channel also available?
Mars that just wouldn't be practicle as these are rather expensive and the input capacitence is about 1,200 pf each so 8 in parall would be hard to drive. No no p chanel avaliable.
Why not? There will be considerable Ig when Vgs exceed forward bias threshold and datasheet shows Ig Max 2A.