Question A LED takes a current of 12.5 m A when the voltage across it is 2 V. Draw a suitable circuit and calculate the value of the series resistor needed to operate the LED from a 9 V battery.

Not only can one select a target current to put through an LED, but by providing a target voltage, the system will automatically calculate the necessary series resistor.

For operation, with R E representing an emitter resistor: For one open LED: Power Limit Circuit A power-limit circuit can be added to the circuit in Fig. 1 to limit the overall power when there is ...

When resistors are connected in series, the current through each resistor is the same. In other words, the current is the same at all points in a series circuit. When resistors are connected in ...

Stackpole Electronics extended its popular 3-W-rated CSNL2512 current-sense resistor series with a 0.2-mΩ value to meet the ...