Resistors are passive electrical components helping control the flow of current in a circuit. A high resistance means less current is available for a given voltage. Inside a resistor, electrons collide with ions, slowing the flow of electricity and lowering the current while producing heat. Timing and Frequency A resistor connected to a capacitor provides a timing source in many circuit designs, electronic sirens light flashers and many other circuits depend on this feature. The capacitor, holding electric charge like a cup holds water, takes a certain amount of time to fill with current, and the resistor determines how fa...
MICROHM develops a series of high power current sense resistors for designers to measure preciselyin high power application. Schematic Diagram MICROHM Shunt Resistor MMS8420 Features: 15W up to 36W Lead free, RoHs compliant for global applications and halogen free Excellent long term stability Load Stability to 0.1% The small size and high power SMD resistor bring the reductionof the board space in current sense. Low resistance value, low TCR, high power and excellent long-term stability enable precisely measurement of the current flowing in BMS, even in the current rise condition.. MICROHM Shunt Resistor MMS8420 is an ide...
Noise is an unwanted phenomenon for resistors. For some applications the noise properties are important. Examples are high gain amplifiers, charge amplifiers and low-level signals. Resistor noise is often specified as microvolt noise per volt of applied voltage, for a 1 MHz bandwidth. Thermal noise is the predominant source of noise for resistors. It is dependent on three variables: resistance, temperature and bandwidth. The relation between these three parameters is describes by the formula: Where E is the RMS noise signal in volts, R is the resistance in ohms, k is Boltzmanns constant, T is the temperature in Kelvin and ...