Introduction

To study n type eMOSFET characteristics.

TODO: Add more details to blog.

Procedure

Mosfet photo for drain characteristics

Results

Mosfet drain characteristics

The drain current is plotted against the drain-source voltage for various values of GATE voltage ranging from 1.65 volts to 2.0 Volts.

Below 1.65V gate input, the MOSFET does not conduct enough to obtain characteristics

Code

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import eyes17.eyes    
p = eyes17.eyes.open()
from pylab import *
import time
#set the inital value of vss
xlabel('Drain Voltage Vds (Volt)')
ylabel('Drain Current Id (Amp)')

pv2 = 1.65
ion() #Enable interactive plotting
while pv2 <= 2.0:
	vdsa = []
	idra = []
	p.set_pv2(pv2)
	p.set_pv1(0)
	time.sleep(0.2)
	#set the intial value of vdd
	pv1 = 0.0
	while pv1 <= 4.8:
		p.set_pv1(pv1)
		#Measure voltage vd to find current id and voltage vds
		a1= p.get_voltage('A1')
		#Find current id for rd=1000 Ohm
		idr = (pv1-a1)/1000.
		#find vds
		vds = a1
		#append id & vds in the arrays
		idra.append(idr)
		vdsa.append(vds)
		print(a1,vds, idr)
		pv1 += 0.1
	plot(vdsa,idra)
	pause(0.5)
	pv2+=0.05	
show()

SEE also