Common Emitter Amplifier Calculator Common Emitter Amplifier Calculator This calculator computes key small-signal parameters for a common emitter amplifier. Assumptions: Emitter bypass capacitor is used. Step 1: Enter Parameters Collector Current, \(I_C\) (mA): e.g., 10 mA (will be converted to A) Transistor Current Gain, \(\beta\): e.g., 100 Collector Resistor, \(R_C\) (Ω): e.g., 4700 Ω Calculate […]
Bimetallic Strip Radius of Curvature Calculator Calculate the radius of curvature \(R\) due to thermal expansion using: $$ R = \frac{t}{\Delta\alpha\, \Delta T} $$ * Ensure all units are consistent: thickness \(t\) in meters, Δα in 1/K, and ΔT in Kelvin. Step 1: Enter Parameters Total Thickness, \(t\) (m): e.g., 0.005 m (5 mm) Difference […]
Plasma Electron Relaxation Time Calculator Plasma Electron Relaxation Time Calculator Calculate the electron relaxation time using: $$ \tau_e = \frac{3 \sqrt{m_e}\,(k_B\, T_e)^{3/2}}{4 \sqrt{2}\,\pi\, n_e\, e^4 \ln\Lambda} $$ * Ensure all inputs are in SI units: \(T_e\) in K, \(n_e\) in m\(^{-3}\), and \(\ln\Lambda\) as a dimensionless number. Step 1: Enter Plasma Parameters Electron Temperature, \(T_e\) […]
Mill Spindle Speed and Feed Rate Calculator Calculate the spindle speed and feed rate for a milling operation. * Cutting speed (m/min), tool diameter (mm), feed per tooth (mm/tooth), and number of teeth are required. Step 1: Enter Parameters Cutting Speed, \(V\) (m/min): e.g., 150 m/min Tool Diameter, \(D\) (mm): e.g., 10 mm Feed per […]
Battery Charger Calculator Battery Charger Calculator Estimate the charging time using: $$ T = \frac{C \times \left(\frac{SOC_{\text{final}} – SOC_{\text{initial}}}{100}\right)}{I \times \eta} $$ * Ensure battery capacity is in Ah, current in A, and efficiency is entered as a fraction (e.g., 1.0 for 100%). Step 1: Enter Battery Parameters Battery Capacity, \(C\) (Ah): e.g., 100 Ah […]
Finesse Value of Cavity Calculator Finesse Value of Cavity Calculator Calculate the finesse using: $$ \mathcal{F} = \frac{\pi \sqrt{R}}{1 – R} $$ * Enter the mirror reflectivity \(R\) as a fraction (e.g., 0.99). Step 1: Enter Reflectivity Mirror Reflectivity, \(R\) (unitless): e.g., 0.99 for 99% reflectivity Calculate Finesse Calculated Finesse Finesse, \(\mathcal{F}\): Recalculate Finesse Formula: […]
Electro-Dialysis Salt Removal Calculator Electro-Dialysis Salt Removal Calculator Estimate the mass of salt removed using: $$ m = \eta \times \frac{I\, t\, M}{z F} $$ * For NaCl, assume \(M = 58.44\) g/mol and \(z = 2\). Enter time in hours. Step 1: Enter Process Parameters Current, \(I\) (A): e.g., 10 A Time, \(t\) (hours): […]
Volumetric Flow Rate Calculator Volumetric Flow Rate Calculator Calculate the volumetric flow rate using Poiseuille’s Equation: $$ Q = \frac{\pi\, \Delta P\, r^4}{8\, \mu\, L} $$ * Ensure that ΔP is in Pascals (Pa), r and L are in meters (m), and μ is in Pa·s. Step 1: Enter Parameters Pressure Difference, \(\Delta P\) (Pa): […]
Air Pressure at Altitude Calculator Air Pressure at Altitude Calculator Calculate the air pressure \(P\) at a given altitude using: $$ P = P_0 \left(1 – \frac{L\, h}{T_0}\right)^{\frac{g\, M}{R\, L}} $$ * Use SI units: altitude in meters, pressure in Pascals. Step 1: Enter Altitude Altitude, \(h\) (m): e.g., 1000 m Calculate Air Pressure Calculated […]
Bernoulli Energy Head Loss Calculator Bernoulli Energy Head Loss Calculator Calculate the head loss \( h_L \) using: $$ h_L = \frac{P_1 – P_2}{\rho g} + \frac{v_1^2 – v_2^2}{2g} + (z_1 – z_2) $$ * Use consistent SI units: pressures in Pa, density in kg/m³, velocities in m/s, elevations in m, and g in m/s². […]