Half Wave Rectifier Schematic

This is a design of a half-wave rectifier  that is uses only half of the input cycle to produce an output. The induced voltage across L2 (the transformer secondary) that will be shown on the schematic diagram. The dots (polarity marks) on the transformer indicate points of the same polarity. During the portion of the input cycle that is going positive (solid line), CR1, the PN junction diode, will be forward-biased and current will flow through the circuit. L2, acting as the source voltage, will have current flowing from the top to the bottom. This current then flows up through RL causing a voltage drop across RL equal to the value of current flowing times the value of RL. This voltage drop will be positive at the top of RL, with respect to its other side; and the output will therefore be a positive voltage with respect to ground. This is the figure of the schematic.