bjt transistor bias voltage calculator

enter the value and click "calculate", the calculation result will be displayed.

enter a value:

base bias type:
Volts


Rb = Base Resistance
Vin = Input Voltage
Rc = Collector Resistance
Re = Emitter Resistance
Vs = Supply Voltage
Vc = Collector Voltage
Ve = Emitter Voltage
Vb = Base Voltage
`I_b=[V_i n-Base t o Emitter Drop]/[R_b+Curren t gai n×R_e] `
Ic = Collector gain x Ib
Ve = IC x Re
Vb = Ve x Base to Emitter Drop
Vc = Vs - IC x Rc
If (Vc < Ve) then,
`V_e=[V_s×R_e]/[R_e+R_c] `
Vc = Ve
Vb = Ve + Base to Emitter Drop
`I_c=V_s/[R_e+R_c] `

base resistance (rb):
K Ohms
input voltage (vin):
Volts
collector resistance (rc):
K ohms
emitter resistance (re):
K ohms
supply voltage (vs):
Volts
current gain:
base to emitter voltage drop:
Volts

calculation result:

collector voltage (vc):
Volts
emitter voltage (ve):
Volts
base voltage (vb):
Volts
collector voltage (ic):
mA
base voltage (ib):
mA
bjt transistor bias calculator this calculator will calculate the value of the bias resistor required to provide the maximum output voltage swing in an npn bipolar junction transistor (bjt) amplifier circuit. this algorithm utilizes ac and dc load line theory and formulas and is one of the most accurate algorithms you will find online. the circuit above is a typical common emitter amplifier circuit with resistors at the emitter and collector junctions. engineers often need to calculate the values ​​of resistors r1 and r2 so that the transistor provides the maximum undistorted output. the algorithm i use here also finds the operating point (q), which can be useful if you are a student of manual calculations.
search calculator