# How do you calculate VCE and IC?

## How do you calculate VCE and IC?

First, assume the transistor is saturated, and therefore Vce = Vce(sat). Vce(sat) is usually something like 0.2V, and it’s usually safe to use 0V as a first approximation. If we assume Vce(sat) of 0V, we get an Ic = 10V/500 ohms = 0.02A. Ic = beta * Ib.

## What is VCE and VBE?

VCE= DC voltage between collector and emitter w.r.t ground. VBB=DC voltage at the base w.r.t ground. VBE= DC voltage b/w base and emitter w.r.t ground. In different configuration, that is CC, CB, CE , DC voltage is applied at different terminals and correspondingly we have the voltages.

## Where is VCE in transistor?

VCE is the voltage that falls across the collector-emitter junction of a bipolar junction transistor. VCE is a crucial voltage of a transistor circuit because it determines the transistor’s load line and q-point.

## What is VCE in cutoff?

When in cutoff, there is no current flow between collector and emitter thus P = Vce ∗ Ic = 0. When in saturation, the current may be high, but Vce is very small, keeping the power dissipated by the transistor very low.

## How much is VCE when a transistor is saturated?

“Saturation” in a transistor switch circuit is achieved when the voltage across the collector/ emitter (VCE(sat)) is less than or equal to . 1 to . 3 volts – depending on the type of transistor.

## What is VCE saturation voltage?

saturation voltage, collector-emitter (VCE(sat)) The voltage between the collector and emitter terminals under conditions of base current or base-emitter voltage beyond which the collector current remains essentially constant as the base current or voltage is increased.

## Is VCC and VCE same?

Determine the voltage drop between the collector and emitter junctions (Vce) of the transistor using the formula Vce = Vcc – IcRc, where “Vce” is the collector emitter voltage, “Vcc” is the supply voltage, and “IcRc” is the voltage drop across the base resistor (Rb). Determine the Vcc in a feedback-biased circuit.

## What does VCEQ mean?

The value of current and voltage at Q-point are written as (VCEQ, ICQ).

## What is VBC in BJT?

one part of that stack is the base-emitter junction (Vbe). the other part of that stack is the base-collector junction (Vbc). Add them together and you have the total stack voltage (Vce), or Vce=Vbe+Vbc.

## What is VT of BJT?

• VT = THERMAL VOLTAGE = kT/e ≈ 25 mV at 25 °C. • β = COMMON-EMITTER CURRENT GAIN (typ 50 to 250)

## How is VCC calculated?

This can be done using the formula: Vcc = Vrc + Vrb + Vbe + (Ic + Ib)Rc + IbRb + Vbe, where “Vrc” is the voltage across the collector resistor, “Vrb” is the voltage across the base resistor (connected across the base) and the junction between the collector resistor and the transistor collector, and “Vbe” is the voltage

## What is VCE Sat?

saturation voltage, collector-emitter (VCE(sat)) The voltage between the collector and emitter terminals under conditions of base current or base-emitter voltage beyond which the collector current remains essentially constant as the base current or voltage is increased.

## What happens if VCE is negative?

When the collector emitter voltage is negative, the base-emitter junction is reversed whereas the collector base is forward biased (not blokcing). Since it is designed to have the lower resistance possible along with higher current gain, it cannot withstand high voltage.

## What does VCE mean in electronics?

The transistor parameter “Vce” signifies the voltage measured between the collector and emitter, which is extremely important because the voltage between the collector and the emitter is the output of the transistor.

## What is VCE BJT?

The transistor parameter “Vce” signifies the voltage measured between the collector and emitter, which is extremely important because the voltage between the collector and the emitter is the output of the transistor.

## What is VCE sat in BJT?

vce saturation When the BJT is in the saturation, the Vce(sat) means the voltage difference between the Collector and Emitter at the spec. “Ic” current value. The value of Vce(sat) have relation to Ic(sat) and the collector resistance “rc”.

## How is VRB calculated?

This can be done using the formula: Vcc = Vrc + Vrb + Vbe + (Ic + Ib)Rc + IbRb + Vbe, where “Vrc” is the voltage across the collector resistor, “Vrb” is the voltage across the base resistor (connected across the base) and the junction between the collector resistor and the transistor collector, and “Vbe” is the voltage

## How is Q point selected?

Q-point is the operating point of the transistor. It is selected in the middle of the active region because: It gives or provides maximum possible amplification to input sinusoidal signal without any distortion in the positive or negative half cycle (Option (c) is correct)

## How is ICQ and VCEQ calculated?

We need to find equivalent circuit at base terminal (Rth & Vth)….Answers:Icq=2.142mA.Vceq=4.852V.VC=5.716V.VE=0.864V.

## What is transistor VCE?

The transistor parameter “Vce” signifies the voltage measured between the collector and emitter, which is extremely important because the voltage between the collector and the emitter is the output of the transistor.

## How do I find my VRB?

This can be done using the formula: Vcc = Vrc + Vrb + Vbe + (Ic + Ib)Rc + IbRb + Vbe, where “Vrc” is the voltage across the collector resistor, “Vrb” is the voltage across the base resistor (connected across the base) and the junction between the collector resistor and the transistor collector, and “Vbe” is the voltage

## How is RB calculated?

The calculated RB = 39k is a standard value resistor. No need to recalculate IE for β = 100….Example Calculations:Bias circuitIC β=100IC β=300emitter-bias, VBB=10V1.01mA2.76mAemitter-bias, VBB=2V, RB=4701.01mA1.75mAemitter-bias, VBB=2V, RB=9101.00mA1.25mAemitter-bias, VBB=1.5V, RB=4701.00mA1.38mA

## How do you find VC and VE?

(a) First, VB = 0 V. The transistor must be on, so VE = VB − VBE = 0 − 0.7V= −0.7 V. 30+1 ×1.0=1.01 mA. Then VC = VCC −ICRC = 3−1.01×2.2=0.78 V.

## What is saturation voltage?

saturation voltage, collector-emitter (VCE(sat)) The voltage between the collector and emitter terminals under conditions of base current or base-emitter voltage beyond which the collector current remains essentially constant as the base current or voltage is increased.

## What is saturation voltage of transistor?

Saturation is the on mode of a transistor. A transistor in saturation mode acts like a short circuit between collector and emitter. In saturation mode both of the “diodes” in the transistor are forward biased. That means VBE must be greater than 0, and so must VBC. In other words, VB must be higher than both VE and VC.

## Why is VBC negative?

Also, to reverse bias the collector-base junction, we need to have a higher potential at the collector compared to the base, so the voltage VCB will be positive, but the voltage VBC will be negative.

## What is reverse voltage in transistor?

When the collector of an NPN transistor is negative with respect to the emitter, the C-B junction is forward biased, so you’re essentially applying a reverse voltage to the B-E junction. According to the datasheet, the maximum that this transistor can withstand is 5V (VEBO).

## What is VCE in networking?

VCE, the Virtual Computing Environment Company formed by Cisco and Dell EMC with investments from VMware and Intel, delivers Vblock ™Infrastructure Platforms to reduce IT cost and complexity while meeting the needs of business critical applications.

## What are VCE words?

Vowel-consonant-e, or VCe, syllables contain a silent e at the end that elongates the vowel sound. For example, if you add an e to the word mat, it becomes mate. Notice how the e at the end is silent, but it changes the vowel sound to the long a.

## What is VBB and VBE?

VBB – Base to ground Bias Voltage. VBE = base to emitter Voltage , it is about 0.7 V for silicon transistor when transitor is on.

## Which of the following is a Darlington pair?

A Darlington pair is a two-transistor circuit with the emitter of one transistor is connected to the base of other transistors, while both collector terminals are connected to the common terminal. It has high current gain β, (equal to the product of current gain of individual transistors)

## What region does the transistor operates when VCE is very low?

If it is beyond saturation, VCE is low, near 0.2V, IC is IC max. By checking the biasing of emitter base and collector base junction, the region of operation of transistor can be determined. If both junctions are forward biased, then transistor is said to be in cutoff region and acts like off switch.

## What is meant by Q point?

The operating point of a device, also known as a bias point, quiescent point or Q-point, is the steady-state DC voltage or current at a specified terminal of an active device such as a transistor with no input signal applied.

## How do you plot Q point?

If by plotting the Q point it means to plot the operating point on the graph you’ve provided, then the value on the x-axis is given, namely Vc = 53V. That IS the collector voltage. Try to explain why each term in your computation for Vce is there. Keep in mind that Vab means Va – Vb, so Vce means Vc – Ve.

## What is the value of VCE?

Calculate Vce using the formula Vce= Vcc – [Ie * (Rc + Re)]. Using the numbers from the previous examples, the equation works as follows: Vce = 12 – 0.00053 (3000 + 7000) = 12 – 5.3 = 6.7 volts.

## How do you find VCC?

This can be done using the formula: Vcc = Vrc + Vrb + Vbe + (Ic + Ib)Rc + IbRb + Vbe, where “Vrc” is the voltage across the collector resistor, “Vrb” is the voltage across the base resistor (connected across the base) and the junction between the collector resistor and the transistor collector, and “Vbe” is the voltage

## How is design current calculated?

VD = mV/A/m × Ib(I “base” design current) × L(metres).Determine the design current (Ib)Select the nominal rating and type of the protective device (In)Divide the protective device rated current(In) by the correction factors (Cg),(Ci),(Ca),(Cr) etc,Select cable from the tables (Iz)

## What is VE in circuits?

So we have a circuit where emitter —gnd or 0v. base .7v. collector 10v. The terms Ve Vb and Vc refer to the voltages present at the transistor. Vcc Vbb Vee refer to the source voltages that drive those.