| Quality of elements, reliability, cut-off frequency, production margins, standard value series. Manufacturability, repeatability, prindted circuit boards, cooling. Thermoelectricity, thermoelement, Peltier element, thermostat, electronic thermometer (diode thermometer), thermistor, pyrometer. Electrodynamics, environment impedance transformation, loudspeaker, resonators. CRT, thermoemission, videoamplifiers, deflection, luminophores. El. safety, leakage currents, safety classes, internal resistence, circuit breakers. Power supplies, transformers, voltage doublers, voltage multiplier, switch-mode power supply, efficiency, EMC. Interference, coupling, grounding, electrical and magnetic fields attenuation, humidity, photosensitivity, microphony. |
Lectures:
Technical system. Block diagram, test points, inputs, outputs.
Vector diagram, transfer of magnitude and phase, pulse response.
Products categorization. Elektricity generation, distribution and consumption.
Resonators, series and parallel RLC circuits, quality.
Components, their quality, margins, reliability, cut-off frequency, standard value series.
Diodes, differencial resistence, TCE, capacitance, diode types.
Product: volume, weight, appearance, operation, compatibility, reliability, servis, price, consumption, efficiency, technical aesthetics.
Transistor, parameters, gain, distortion, noise, cut-off frequency.
Design criterions: manufacturability, repeatability, PCB, interference, cooling, el. safety.
Components list: value, type, margins, TCE, allowed aging, dissipation, warm-up, failure intensity, price.
Failure rate, failure rate thermal acceleration, degradation, Arhein equation, failure intensity, overload degradation.
Electro-thermal analogy. Thermal capacitance, heat pump.
Cooling by radiation. Integral thermoradiation, cooler surface, main radiation frequency. Wire resistor, bulb, power coaxial cable.
Cooling by conduction. Equations of S/l type, thermal conduction, thickness of cooling plate, heat pipe. Power transistor cooling.
Cooling by flow. Forced cooling with fan, native ventilation (stack effect), King law.
Thermal inertia, thermal fuse, power pulse response, overload rating.
Termoelectricity. Peltier couple.
Electronic thermometers. AC and DC diode thermometers, thermistor thermometer, pyrometer, thermostat.
Electrodynamic. Environment impedance, loudspeaker, resonators. Sounding, electro-acoustic, acoustic pressure, speaker system, switches, voice pipe.
CRT, thermal emission, video amplifiers, deflection, luminophors, implosion.
Transformers. Intermal resistance, frequency response, supersaturation, leakage current.
Power sources, voltage doubler, voltage multiplier, switch-mode power supply, EMC.
Series of frequencies, electronic instrument frequency synthesizer.
Non-linearities. Thermistor, posistor, surge arrester, relay, linearization.
Interference, noises, galvanic couple, grounding, el. and mag. field attenuation, wave guide.
Moisture, photosensitivity, microphony.
Exercises:
1. Familiarization with subject content, safety in laboratories, conduction excercises, ceramic resistor, warm-up.
2. Diode, diode in limiting states, calculations.
3. Analog and switched power supplies, interference, power supply design, step-up, step-down, inverting converters, converters with transformer.
4. Radioelectronic - calculations.
5. Optocouplers, types, calculations, linear optocoupler, frequency characteristic.
6. Amplifier - calculations.
7. Protection in electronic, fuses, polyswitches, electronic fuse design, varistors, transils, spark gap.
8. Cooling in electronic, emissivity, black object, heat pipe, Peltier couple.
9. Galvanic cell, charge, power, energy, capacity, power consumption, discharging curve, teoretic voltage, internal resistivity, optimal current.
10. Electroacoustic - microphone, loudspeaker, piezo transducter, resonance frquency.
Laboratories:
11. Measuring of switched power supply with MC34063A circuit.
12. Measuring of transformers, transformers EI, RF, HV, toroid and potty transformers, accumulated energy, optocouplers, transfer and frequency characteristics.
13. Measuring of protecting elements - fuses (speed of breaking by continuing current, speed of braking by pulse current), polyswitches, electronic fuse, varistors and transils.
14. Coolers, Peltier couple measurements. |