20 Classic Analog Circuits That Engineers Must Know (Detailed Illustrations and Text)

As an electronic engineer, how many analog circuits have you mastered? How many drawings and principles should you master? This article lists the 20 most common circuits and roughly infers the different levels of understanding of circuits for different levels of enthusiasts. Come and compare to see what level of electronic engineer you are.

1. Bridge rectifier circuit

Points to note:

1. Unidirectional conductivity of diode, volt-ampere characteristic curve, ideal switch model and constant voltage drop;

2. Bridge rectifier current flow process, input and output waveforms;

3. Calculate: Vo, Io, diode reverse voltage.

2. Power filter

Points to note:

1. The process of power supply filtering and waveform formation;

2. Calculation: Selection of the capacity and withstand voltage of the filter capacitor.

3. Signal Filter

Points to note:

1. The function of signal filter, the difference and similarity with power filter;

2. Impedance calculation of LC series and parallel circuits, amplitude-frequency relationship and phase-frequency relationship curves;

3. Draw the passband curve and calculate the resonant frequency.

4. Differentiation and integration circuits

Points to note:

1. The function of the circuit, the difference and similarity with the filter;

2. Analyze the voltage change process of differential and integral circuits and draw the voltage change waveform;

3. Calculation: time constant, voltage change equation, selection of resistance and capacitance parameters.