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STN9260
STN9260

... All ST products are sold pursuant to ST’s terms and conditions of sale. Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no liability whatsoever relating to the choice, selection or use of the ST products and service ...
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... 1. How much current is in a circuit that includes a 9-volt battery and a bulb with a resistance of 3 ohms? 2. How much current is in a circuit that includes a 9-volt battery and a bulb with a resistance of 12 ohms? 3. A circuit contains a 1.5 volt battery and a bulb with a resistance of 3 ohms. Calc ...
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... Technology, systems and control, electrical systems, electronic circuits, output, input, Ohm’s law, relationship, potential difference, current, resistance, electrical circuit, calculations, worksheet, Formative Assessment Assessment Type: Formative Assessment Form/s: Worksheet Copyright for include ...
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... the gate voltage has risen to 21.6V. When the gate has fully charged, Q2 reverse-biases since the base and emitter voltages are within a diode voltage-drop of each other. This process repeats itself for every switching cycle and performs the level-shifting function required to meet NASA derating req ...
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Current mirror

A current mirror is a circuit designed to copy a current through one active device by controlling the current in another active device of a circuit, keeping the output current constant regardless of loading. The current being 'copied' can be, and sometimes is, a varying signal current. Conceptually, an ideal current mirror is simply an ideal inverting current amplifier that reverses the current direction as well or it is a current-controlled current source (CCCS). The current mirror is used to provide bias currents and active loads to circuits. It can also be used to model a more realistic current source (since ideal current sources don't exist).The circuit topology covered here is one that appears in many monolithic ICs. It is a Widlar mirror without an emitter degeneration resistor in the follower (output) transistor. This topology can only be done in an IC as the matching has to be extremely close and cannot be achieved with discretes.Another topology is the Wilson mirror. The Wilson mirror solves the Early effect voltage problem in his design.
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