The key to maximizing LED life is limiting the current that runs through it. This is frequently done with a simple resistor whose value is calculated using Ohm's Law. This article reviews how to apply Ohm's Law to single and clustered LED circuits. I have also provided an Excel ...
The amount of current that flows through a series of resistors remains the same. As all resistors connect to one after another, each additional resistor in a series increases the overall resistance. This is unlike resistors in parallel where current is increased, and the resistance is reduced. ...
The key to maximizing LED life is limiting the current that runs through it. This is frequently done with a simple resistor whose value is calculated using Ohm's Law. This article reviews how to apply Ohm's Law to single and clustered LED circuits. I have also provided an Excel ...
The RC constant tau may be defined as the period required to charge a given capacitor through an associated series resistor by a difference of approximately 63.2% between its initial charge level and the final charge level. Conversely, the above expressed RC constant may be defined as the period...
The excitation circuit 30 includes a transistor 31 of the NPN type which is connected at its base to an output terminal of frequency divider 20b through a resistor 31a and at its collector to a positive terminal +Vc of a direct current (or DC) source through a resistor 31b. The ...
here, as the key points about error calculations are easier to illustrate with this architecture. Current-output DACs are typically used in a multiplying configuration (MDAC) to provide variable gain; they usually require external op amps to buffer the voltage generated across a fixed resistor. ...
The current phasor through the 25 ohm resistor and C can be calculated using E and the impedance Z, which is a function of C. Finally, you can use the derivative of the voltage difference function to determine the value of C that maximizes the magnitude of V. ...
For resistance, the current and voltage are in phase and the voltage drop across this resistor which is determined by ISR should be in phase with the transformer secondary current determined by IS. For the inductor, the current in the transformer lags by 90 degrees with the voltage across the...
Transistor TR supplies electric power to the light measuring section LM and the display portion DS, and the base of the transistor TR is connected through a resistor to an output terminal OP1 of the microcomputer MC. The busline BL is a common busline inter-connecting the microcomputer MC, ...
Low, Boost or Pass-through, No Low Power Mode Load, No Switching, TJ = 25°C MIN TYP MAX 5 90 300 400 UNIT nA nA The current into the VOUT pin, the current flowing through the resistor divider and the load current ILOAD are tranfered from the battery when the device is switching....