________________JML Electronics Study Lab3: Ex1________________ This is a transistor amplifier with bias. The output Ic current is the amplification factor, beta times the input current Ib. Input your curcuit values.

Rb1 = ohms.    Rb2 = ohms.    Re = ohms.    Rc = ohms. beta = .     Ib = (Vcc-Vbe)/(Rb+beta*Re)= microamps.          Ic = beta*Ib = milliamps.   Vce = Vcc-IcRc-IeRe = volts.      

______________________________________________________________ Ex:1     Try Rb=400k     Rc=1k     Re=1k     beta=100 Ex:2     Try Rb=400k     Rc=1k     Re=1k     beta=80 Ex:3     Try Rb=100k     Rc=1k     Re=1k     beta=100 Did you notice no change in Ex:2 and Ex:3? Why? Ex:4     Try Rb=400k     Rc=50k     Re=1k     beta=100   __________________________________________________________________________________________   (c)2005 Joe Evans copywrite NO PART OF THIS WEBPAGE CAN BE USE OR COPIED WITHOUT THE OWNERS CONCENT.  ALL VIOLATORS WILL BE TRACKED DOWN AND WILL FACE SEVERE PUNISHMENT.