Download Diode Clipping and Clamping Circuits Experiment and more Summaries Engineering in PDF only on Docsity! University of Anbar College of Engineering Dept. of Electrical Engineering Lab. Name: Electronic I Experiment no.: 4 Lab. Supervisor: Munther N. Thiyab 1 Experiment #4- Part#1 Object The purpose of this experiment is to demonstrate the operation of diode clipping and clamping circuits. Required Parts and Equipment's 1. Function Generator 2. Electronic Test Board (M50) 3. Dual-Channel Oscilloscope 4. DC Power Supply 5. Silicon Diode 1N4001 6. Resistors, 𝑅1 = 1𝐾Ω, 𝑅2 = 2𝐾Ω 7. Leads and Adaptors Theory In addition to the use of diodes as rectifiers, there are a number of other interesting applications. For example, diodes are frequently used in applications such as wave-shaping, detectors, voltage multipliers, switching circuits, protection circuits, and mixers. In this experiment, we will investigate two widely used applications of diode circuits, namely diode clipping circuits and diode clamping circuits. Half-Wave Rectifier Diode clipping circuits are wave-shaping circuits that are used to prevent signal voltages from going above or below certain levels. The clipping level may be either equal to the diode’s barrier potential or made variable with a DC voltage Diode Applications 1 Clipping and Clamping Circuits University of Anbar College of Engineering Dept. of Electrical Engineering Lab. Name: Electronic I Experiment no.: 4 Lab. Supervisor: Munther N. Thiyab 2 source (or bias voltage). Because of this limiting capability, the clipper is also called a limiter. There are, in general, two types of clipping circuits: parallel clippers and series clippers. In parallel clippers, the diode is connected in a branch parallel to the load, while in series clippers, the diode is connected in series with the load. Fig.1 presents a simple diode clipping circuit. This circuit is known as the unbiased parallel diode clipper, and is used to clip or limit the positive part of the input voltage. As the input voltage goes positive, the diode becomes forward-biased. The anode of the diode in this case is at a potential of 0.7V with respect to the cathode. So, the output voltage will be limited to 0.7V when the input voltage exceeds this value. When the input voltage goes back below 0.7V, the diode is reverse-biased and appears as an open circuit. The output voltage will look like the negative part of the input voltage. Figure 1: Simple Unbiased Parallel Diode Clipping Circuit The level to which an AC voltage is limited can be adjusted by adding a bias voltage 𝑉𝐵in series with the diode as shown in Fig.2.
