hello p ch mosfet want to set up circuit. Is my scheme correct?
Photo link
Your schematic is not visible.
groundFungus:
Your schematic is not visible.
now look plz
Why use the octal buffer before the MOSFETs? - the opto-isolators can drive the gates direct.
What voltage is this circuit using?
I would always prototype one channel of the system on breadboard or protoboard before commiting to a PCB.
MorganS:
What voltage is this circuit using?I would always prototype one channel of the system on breadboard or protoboard before commiting to a PCB.
isung 24v
Use the fourth diagram on this page.
Relace the 2N3904 with the opto transistor if you need to use opto isolation.
Leo..
k0rkunc:
isung 24v
Hmm...
Most MOSFETs cannot tolerate 24V on the gate. 20V is a common absolute-maximum for VGS. Enen a microsecond surge above that maximum wil destroy the device.
Also, what octal buffer works at that voltage?