[sdiy] question on JFETS in vco of MS series

[dan snazelle]

there is a JFET in the MS20 VCO which connects to the CV source...on the schematic it is called Q5


see here:

http://www.korganalogue.net/korgms/images/service/ms20/circ1.gif



the drain connects to ground and the source to a 10k resistor

the odd thing (from my understanding) is that the gate is connected to GROUND.


I thought that ground shut off a transistor. obviously this circuit works, so my guess is that ground is NOT in fact OFF, so it must be acting as a constant of some sort.

could anyone help me with this? usually when I see JFETS in vcos, the CV signal is going into the Gate so this is new to me.


thanks!