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Due to the current situation, the lectures are suspended until further notice.
This lecture series is aimed at helping scientists to better understand the electronic equipment that they rely upon in their experimental setups.
Even when connecting together commercial equipment, there are many "gotchas" that can lead to puzzling results (or no results).
Knowledge of the basics in electronics can enable one to debug quickly, or avoid problems entirely.
The basic principles of electronics will be illustrated with concrete examples.
A series of 1-hour lectures:
WHEN? 9:00 AM on the following Tuesdays: 18.2. 25.2. 3.3. 10.3. 17.3. 24.3. 31.3. 21.4.
WHERE? Haber-Villa (Seminar Room)
LANGUAGE? English
No registration required.
Lecture 1 Power supplies and loads (18.2.)
Thinking in terms of voltage or current. Ohm's law. Circuit rules. The voltage divider. Floating supplies, batteries, transformers, regulators, switch-mode supplies. Current sources. Wire gauges. Resistance. Output/input impedance. Function generators. Programmable supplies. Setting current/voltage limits. Voltage drops over cables and protection diodes. Power/heat dissipation.
Lecture 2 Filters (25.2.)
Thinking in terms of time or frequency. Measurement bandwidth. Fourier Transform. Complex impedance. Capacitors. Inductors. Passive filters. RC. LC. Lowpass, highpass, bandpass, allpass, notch. Resonator. Frequency response. Phase response. Impulse response. Ringing. Time delay. Modulation: AM/PM and sidebands.
Lecture 3 Weak signals (17.3.)
Drift. Noise. Signal-to-noise ratio. RF-interference. Twisted pair. Why 50 Ohm? BNC cables. Shielding. Ground loops. Lock-in amplifiers and choppers. Balanced signals. Single-ended vs. differential measurements. The operational-amplifier. Reading op-amp circuits. Instrumentation amplifiers. Photodiodes and transimpedance amplifiers. Active filters. Gain-Bandwidth-Product. Op-amp limitations. Troubleshooting.
Lecture 4 Safety (24.3.)
Fuses. The earth connection. Earth, ground or chassis? Earth-leakage detector. 3-Phase power. Isolating transformers. Current is deadly. High voltages. Insulation. Arcing. Leakage paths. Back-EMF from switching inductive loads. Heat development. Thermal switches. Under-voltage protection.
Lecture 5 Control (31.3)
Feedback loops. Stability criteria. Oscillations. Temperature. Thermocouples. Resistive heating. Pulse-width-modulation vs. on/off actuation. Fine-tuning PID parameters. Heating using lasers. Peltier elements for cooling. Motors. Stepper-motor control. Brushless motors. Servo-motors. End-switches. Optical encoders.
Lecture 6 Automation and digitization (21.4.)
Digital gates. Schmitt-trigger. Propagation delay. From flip-flops to counters. Analog-to-digital-conversion. Linearity. Resolution. Nyquist limit. Phase-space sampling method. Data rates. Digital-to-analog conversion. Microcontrollers. Single-board computers with GPIO pins. Limitations of each or advantages in their combination. Distinction to field-programmable-gate arrays (FPGA). Commercial NI-DAQ cards and Labview. Alternative with EPICS.
Nicolai Große