Material Minimumtensilestrength (psi) ASMEcode Allowablestress(S) (psi) ASTMA139 48000 16000 ThevalueoftheinternalfluidpressurethatwillproducethetensilestresslevelstipulatedbytheASMEcodeis315psig(seeformula[3]). [3] Thispressureshouldbecomparedtothenormaloperatingpressure.Thepressureinapumpsystemcanvary...
Calculate R1 in Figure 1 by using the following formula: ⎛V ⎞ R1 = ⎜ ON − 1⎟ × R2 ⎝ VUVLO ⎠ where VUVLO is the ON/OFF’s 1.23V rising threshold, and VON is the desired input startup voltage. Choose an R2 value in the 100kΩ range. The UVLO circuits keep ...
formula (see the Low-Voltage Operation section). Reduce inductor value. Sag or droop in V under step-load change Low V - V differential, <1.5V Limited inductor-current slew rate per cycle. OUT IN OUT Dropout voltage is too Low V - V differential, <1V Maximum duty...
Alternately, use the following formula to calculate the allowable package dissipation: 1.455W 1.2 1.0 0.8 0.6 0.4 0.2 0 0 20 40 60 80 PDISS = 1.455W for TA ≤ +70°C 100 120 140 160 Maximum power dissipation = 1.455 - 0.0182 (TA - 70°C) for +70°C ≤ TA ≤ +125°C ...
(s) Low-side nMOSFET losses can be estimated using the following formula: PLS − MOSFET = ICHG2 × RDS − ON(LS) × (1 − D) + VD × ICHG × tDT × fSW × 2 where, VD = Forward-drop of the low-side nMOSFET(s) body diode tDT = Dead time (30ns) Take RDS-ON ...
MAX6397. The graph assumes that the exposed metal pad of the MAX6397 package is soldered to 1in2of PC board copper. Use Figure 11 to determine the allow- able package dissipation for a given ambient tempera- ture. Alternately, use the following formula to calculate the allowable package ...
Use the following formula to calculate the voltage VPWM nec- essary for a given output-current duty cycle D: VPWM = (D x 2.8) + 0.2V where VPWM is the voltage applied to PWM pin, in volts. Input-Current Limit The MAX25600 features circuitry that limits the input current during line ...
Similar informat can be found with a google search, such as "von mises stress shear failure criteria" http://www.efunda.com/formulae/solid_mechanics/failure_criteria/failure_criteria_ductile.cfm http://courses.washington.edu/me354a/strength_theories.pdf http://www.mech.uwa.edu.au/DANotes/SS...
(FS): 锻钢 Fork lift: 铲车、叉车 Forming: 压制成型 Forming of plates into tubular: 由板卷成钢 Formula/equation of carbon equivalent: 碳当量公式 Four way valve: 四通阀 Fracture toughness: 断裂韧性 Frame structure: 梁格结构 Free water knockout vessel: 游离水分离器 Fresh water pressure vessel:...
(— stress range or reduced stress range for fatigue calculation; ((e— equivalent stress rage of variable amplitude fatigue; [((] — allowable stress range of fatigue; — critical stresses of plate under individual action of bending stress, local compressive stress and shear stress receptively;...