Nonlinear controlled sources: piecewise linear, square-law, exponential and differential pair characteristics. Low level amplitude modulation and analog multiplication. Narrowband transformer like coupling networks. Nonlinear loading of tuned circuits. Tuned large signal transistor amplifiers and frequency multipliers. Sinusoidal oscillators. Frequency mixers and converters..Nonlinear controlled sources: piecewise linear, square-law, exponential and differential pair characteristics. Low level amplitude modulation and analog multiplication. Narrowband transformer like coupling networks. Nonlinear loading of tuned circuits. Tuned large signal transistor amplifiers and frequency multipliers. Sinusoidal oscillators. Frequency mixers and converters..