Resistors Transistor Calculator

Calculate the bias resistors for the cascode amplifier in the figure below. Calculate the current you need to pass through the transistor when its on that is your collector current.

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Ive tried researching it but ive come across so many different calculators and formulas that im completely confused.

Resistors transistor calculator. Calculator vbe vce hfe first you must check the datasheet of the transistor in question and identify the values vbe vce and hfe. Enter resistances into the boxes below and when all values have been input click on the calculate button and the result will appear in the box below that button. This calculator can determine the resistance of up to 10 resistors in parallel.

Im having some trouble working out the correct value for a base resistor to use with an npn transistor. More online conversion calculators at digi key. The algorithm makes use of ac and dc load line theory and formulas and is one of the most accurate you will find online.

The calculator above will display the value the tolerance and performs a simple check to verify if the calculated resistance matches one of the eia standard values. As a test if you input resistances of 3 9 and 18 ohms your answer should be 2 ohms. Hover above the tolerance for min.

What i need to do is use the transistor as a switch. Transistor biasing calculations chapter 4 bipolar junction transistors pdf version. Although transistor switching circuits operate without bias it is unusual for analog circuits to operate without bias.

These values are responsible for enabling transistor. The resistor color code calculator decodes and identifies a value and tolerance of 4 band wire wound resistors. Select the first 3 or 4 bands for 20 10 or 5 resistors and all 5 bands for precision 2 or less 5 band resistors.

Its important that you read the following. Bjt transistor biasing calculator this calculator will compute the values of the biasing resistors required to provide the maximum output voltage swing in a npn bipolar junction transistor bjt amplifier circuit. Here is a calculator for transistor base resistor values.

Transistor base resistor calculator consider a base resistor that controls the amount of current entering the base junction of a bipolar junction transistor bjt to cause it to conduct in the saturation region. Vb2 is the bias voltage for the common emitter stage. The current gain beta hfe is a value you can find in the datasheet for the specific transistor.

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