Circuit Analysis, Design & Theory
Please note,only underlined articles are complete.

Analysis
Analysis and Aplications of the Capacitive Transformer (PDF Format) by Ramon Vargas
Basic DC Analysis
Boolean Algebra Examples
Frequency Response
Colpitts Oscillator
BJT Bias Analysis
Transmitter Distance
Small-Signal Analysis
James Baxandall Passive Tone Control Network by Ramon Vargas (external link)


Design
Analogue Coupling Circuits
BJT Configurations
BJT Configurations 2
FET Configurations
BJT Bias Circuits
Negative Feedback in amplifiers by Lazar pancic
Transistor as a Switch
Op-amp Tutorial by Tony Van Roon (external link)
Over Voltage Protection
Removing "DC thump" from Audio Circuits
Switch Contact De-Bouncing
555 Timer Tutorial by Tony Van Roon (external link)
Unregulated Power Supply Design
Wien Bridge Oscillator Design by Ramon Vargas
Q Multiplication in the Wien Bridge Oscillator by Ramon Vargas
Voltage Comaparator and Q Multiplier make a stable Sine Wave Oscillator (in PDF format) by Ramon Vargas


Theory
Antenna Theory and Transmitting
Basic DC Theory
Basic AC Theory
Diode Charge Pump AM-FM Demodulators by Ramon Vargas
Heat Sinks for Transistors (external link to Kelsey Park School)
Ohms Law for AC Circuits
Measuring Input Output Impedance
Low Noise Design Techniques
Oscillations and Regenerative Amplification using Negative Resistance Devices by Ramon Vargas Transistor Modelling
Radio Calculations by Harry Lythall (external link)
Thevevin and Norton Networks
Tuned Circuits