Example 3: Consider three resistors 20Ω, 30Ω, and 40Ω are connected in a parallel form a current divider circuit as shown below. The circuit is connected with a 100V supply. Find out the total current and the current flowing through each resistor in the parallel circuit using the curren...
Since theLTC2972/LTC2974/LTC2975have a 6 V limit to the ISENSEpins, the solution to this problem is to use a high-side current sense amplifier (CSA) for level translation. TheLT6100/LTC6101are popular for fixed/user-selectable gain. The accuracy is much better than with divider ...
Another issue to consider for this discrete solution is temperature drift. Even if an amplifier with zero drift is used, it is very difficult or costly to optimize drifts caused by discrete components: the Zener diode, MOSFET, and resistors. From Table 1, the maximumIDSSof the MOSFET chan...
The two resistors and a capacitor at the at the positive supply are positioned for suppressing the initial power ON surge and other fluctuations during voltage fluctuations. In fact the real surge correction is done by C2 introduced after the bridge (in between R2 and R3). All instantaneous vol...
A divider resistor is in parallel with Cx to compensate the deviation of RPCB values between different phases. The VSEN signal can be derived by following steps.For VSEN1, the equivalent inductor impedance is DCR + RPCB1, and the VCX1 or VSEN1 can be calculated as following equation :...
divider network composed of R4 R5 and C2 As the value of R5 is decreased the Av of the stage will approach the AC open loop limit of the amplifier The insertion of capacitor C2 allows the DC bias to be controlled by the series combination of R3 and R4 with no effect from R5 Therefore...
The resistor divider should be selected using the following equation: VOUT = VADJ (1 + R1 / R2) with VADJ = 0.8 V (typ.) Resistors should be used with values in the range from 10 kΩ to 50 kΩ. Lower values can also be suitable...
DC Bus Current-Sensing Circuit for Single-Shunt FOC In the preceding Figure 17, R61 and R55 are the sense resistors and each has a resistance value of 20 mΩ. The voltage drop across the sense resistor can be calculated by using Equation 6: VSENSE = ISENSE ´ RSENSE (6) where, ...
VGE is approximately the bias voltage supplied to VDD after subtracting the forward voltage drop of the bootstrap diode D3 (VDBOOT). In this design example, the estimated VGE is approximately 15 V, as Equation 4 shows. VGE » VDD - VDBOOT = 16 V - 1 V = 15 V (4) The IGBT ...
This measurement method can also be performed with larger value feedback resistors. These large value resistors are often glass encapsulated, hermetically sealed, and come in large footprints. Using a higher value feedback resistor yields a better signal-to-noise ratio at the output and a more ac...