VI. Solved Examples from Source Material
The source context provides several solved examples illustrating the application of key formulas.
| Example Subject | Problem Description | Key Inputs | Calculated Results |
| BJT Parameters | For a BJT with a given emitter current and efficiency factors, calculate its transport factor, current gain, collector current, and base current. | I_E = 1mA, γ_E = 0.99, α_T = 0.994, δ_r = 0.997 | α = 0.981, β = 51.6, I_C = 0.981mA, I_B = 19μA |
| Phase Controlled Converter | A DC motor is supplied by a 3-phase converter. Calculate the maximum current under which commutation is not affected during regenerative braking. | Motor: 220V, 100A; R_a = 0.1 Ω; Reactance = 0.5 Ω | Max Current (I_db) = 152.2A |
| DC-DC Step-Up Chopper | A step-up chopper has a specified input and desired output voltage. Calculate the chopping frequency and the new output voltage if the pulse width is halved. | V_s = 150V, V_o = 450V, T_ON = 150μs | Chopping Frequency (f) = 4.44 kHz; New V_o = 300V |
| Single Phase Inverter | A single-phase half-bridge inverter has a given resistance and DC input voltage. Calculate RMS voltage, output power, peak/average current, and THD. | R = 2.5 Ω, V_in = 50V | E1_RMS = 45V, P_out = 1000W, I_peak = 20A, I_avg = 10A, THD = 48% |
| AC Voltage Controller | A single-phase AC voltage controller has specified ON/OFF times. Calculate the triggering angle and output voltage. | T_ON = 6 min, T_OFF = 4 min, V_s = 110V | Triggering Angle (α) = 72°; Voltage Output (V_o) = 66V |