Loop Calibration and Maintenance with a Fluke Loop Calibrator
... Many signal conditioners with 0-20 mA and 4-20 mA outputs are notorious for zero and span control interaction. If, when checking linearity in the calibration section, your output meter displayed a value higher or lower than 4 mA, perform the following steps to affect the required 4 and 20 mA display ...
... Many signal conditioners with 0-20 mA and 4-20 mA outputs are notorious for zero and span control interaction. If, when checking linearity in the calibration section, your output meter displayed a value higher or lower than 4 mA, perform the following steps to affect the required 4 and 20 mA display ...
Steady State
... amount to 3.5 grams in 3 hours. It is determined that her system removes glucose from the bloodstream at a rate of 4 grams per hour per gram of glucose. How fast should the physician order the glucose to be infused into the patient’s body? ...
... amount to 3.5 grams in 3 hours. It is determined that her system removes glucose from the bloodstream at a rate of 4 grams per hour per gram of glucose. How fast should the physician order the glucose to be infused into the patient’s body? ...
Info Letter No. 5 Zero sequence voltage in three-phase
... the phase-earth voltages measured at any point in the network covered by three voltage transformers (sum of the instantaneous values, null component of the voltages) or directly at the auxiliary winding of an earth-fault compensation coil. For the measurement of the zero sequence voltage, single pol ...
... the phase-earth voltages measured at any point in the network covered by three voltage transformers (sum of the instantaneous values, null component of the voltages) or directly at the auxiliary winding of an earth-fault compensation coil. For the measurement of the zero sequence voltage, single pol ...
RT9368 - Richtek
... When an external PWM signal is connected to the EN pin, brightness of white LED is adjusted by the duty cycle. LED Current Setting The current of white LED connected to RT9368 can be set by RSET. Every current flows through the white LED is 250 times greater than the current of RSET. The white LED ...
... When an external PWM signal is connected to the EN pin, brightness of white LED is adjusted by the duty cycle. LED Current Setting The current of white LED connected to RT9368 can be set by RSET. Every current flows through the white LED is 250 times greater than the current of RSET. The white LED ...
Winding Resistance Testing WRT-10
... • In the example below, it can be seen that tap +5 and -5 both have higher than normal resistance. • In this example both these taps use the same tap selection, but with the reversing switch in different positions, it is likely that the cause of this inconsistency is a high resistance in position fi ...
... • In the example below, it can be seen that tap +5 and -5 both have higher than normal resistance. • In this example both these taps use the same tap selection, but with the reversing switch in different positions, it is likely that the cause of this inconsistency is a high resistance in position fi ...
The Zener Diode
... drop when sufficiently reversed-biased. This property allows the use of the zener diode as a simple voltage regulator. ...
... drop when sufficiently reversed-biased. This property allows the use of the zener diode as a simple voltage regulator. ...
Circuits and Ohm`s Law
... Johnny “Danger” Powells uses one power strip to plug in his microwave, coffee pot, space heater, toaster, and guitar amplifier all into one outlet. 25 A 10 A ...
... Johnny “Danger” Powells uses one power strip to plug in his microwave, coffee pot, space heater, toaster, and guitar amplifier all into one outlet. 25 A 10 A ...
Thevenin Equivalent Circuits
... A source transformation transforms the parallel current source and 3 Ω resistor in Figure 3a into the series voltage source and 3 Ω resistor in Figure 4a. The voltage source voltage is calculated from the current source current and resistance as ( 2 A )( 3 Ω ) = 6 V . After the source transformation ...
... A source transformation transforms the parallel current source and 3 Ω resistor in Figure 3a into the series voltage source and 3 Ω resistor in Figure 4a. The voltage source voltage is calculated from the current source current and resistance as ( 2 A )( 3 Ω ) = 6 V . After the source transformation ...
Analysis, Design and Control of Zero Current Switching DC To DC
... The gate drive must provide enough charge to account for this current as well as the current needed to charge Cgs [4]. To make the mosfet change state, the gate drive must charge the capacitor to sufficiently high voltage for turn-on, and then remove the charge for turn-off. The charge – discharge p ...
... The gate drive must provide enough charge to account for this current as well as the current needed to charge Cgs [4]. To make the mosfet change state, the gate drive must charge the capacitor to sufficiently high voltage for turn-on, and then remove the charge for turn-off. The charge – discharge p ...
9- and 11-Channel, Muxed Input LCD Reference Buffers AD8509/AD8511
... The AD8509 and AD8511 are CMOS buffers with A/B inputs that are used to select between two different reference voltages set up by an external resistor ladder. Input bias currents are orders of magnitude less than competitive parts. This allows very large resistor ladders to be used to save supply cu ...
... The AD8509 and AD8511 are CMOS buffers with A/B inputs that are used to select between two different reference voltages set up by an external resistor ladder. Input bias currents are orders of magnitude less than competitive parts. This allows very large resistor ladders to be used to save supply cu ...
Linear Circuit Eleme..
... A: It turns out that any circuit constructed entirely with linear circuit elements is likewise a linear system (i.e., a linear circuit). As a result, we know that that there must be some linear operator that relates v t and i t in your example! LZ i t v t Jim Stiles ...
... A: It turns out that any circuit constructed entirely with linear circuit elements is likewise a linear system (i.e., a linear circuit). As a result, we know that that there must be some linear operator that relates v t and i t in your example! LZ i t v t Jim Stiles ...
3. Proposed Universal Biquad Employing only
... (with voltage input and current outputs) and (b) needing an additional resistor also (apart from two grounded capacitors). The object of this paper is to present a new ZCCFTA-based universal biquad which offers all the three advantages (i)-(iii) quoted above like the circuits of [3]-[6], but by cont ...
... (with voltage input and current outputs) and (b) needing an additional resistor also (apart from two grounded capacitors). The object of this paper is to present a new ZCCFTA-based universal biquad which offers all the three advantages (i)-(iii) quoted above like the circuits of [3]-[6], but by cont ...
1200-Volt IC Changes the Way 3-Phase Motor Drive
... VB1, VB2 or VB3 to COM pin) and that means that the entire gate drive circuit is referenced to a floating node (VS1, VS2 or VS3 pin) that can move below ground to a high voltage potential not exceeding 1200V. In the application circuit the high side gate drive is referenced to the emitter node of th ...
... VB1, VB2 or VB3 to COM pin) and that means that the entire gate drive circuit is referenced to a floating node (VS1, VS2 or VS3 pin) that can move below ground to a high voltage potential not exceeding 1200V. In the application circuit the high side gate drive is referenced to the emitter node of th ...
Instrument Transformer Basic Technical
... has established accuracy classes for both current and potential transformers. The limit of permissible error in a potential transformer for a given accuracy class remains constant over a range of voltage from 10% below to 10% above rated voltage. In the figure to the right is a standard test card pr ...
... has established accuracy classes for both current and potential transformers. The limit of permissible error in a potential transformer for a given accuracy class remains constant over a range of voltage from 10% below to 10% above rated voltage. In the figure to the right is a standard test card pr ...
Multimeter
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A multimeter or a multitester, also known as a VOM (Volt-Ohm meter or Volt-Ohm-milliammeter ), is an electronic measuring instrument that combines several measurement functions in one unit. A typical multimeter would include basic features such as the ability to measure voltage, current, and resistance. Analog multimeters use a microammeter whose pointer moves over a scale calibrated for all the different measurements that can be made. Digital multimeters (DMM, DVOM) display the measured value in numerals, and may also display a bar of a length proportional to the quantity being measured. Digital multimeters are now far more common but analog multimeters are still preferable in some cases, for example when monitoring a rapidly varying value. A multimeter can be a hand-held device useful for basic fault finding and field service work, or a bench instrument which can measure to a very high degree of accuracy. They can be used to troubleshoot electrical problems in a wide array of industrial and household devices such as electronic equipment, motor controls, domestic appliances, power supplies, and wiring systems.Multimeters are available in a wide range of features and prices. Cheap multimeters can cost less than US$10, while laboratory-grade models with certified calibration can cost more than US$5,000.