Couldn't find anything in the search so I though I'd ask in a thread: I'm wanting to use a P-chan. JFET instead of a N-chan. JFET as I'm trying to incorporate bits and pieces with different grounding for what the original diagram says, what would be the best way of going about working out and implementing this?
means turn the schematic top to bottom.
Re-label the +ve supply which is at the bottom as a -ve supply.
Swap all transistors for their sisters, i.e. Nch becomes Pch NPN becomes PNP, Pch becomes Nch, PNP becomes NPN.
check and re-orient all polar semiconductors, eg. diodes, zeners, leds etc.
But since you misunderstood the first instruction then I too am inclined to agree with Alex. Don't.
Swap your Pch jFETs to Nch jFETs, you might negotiate 50 to 100% extra devices.
Or hold your stock and wait till a circuit that needs both Nch & Pch jFETs appeals to you.
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