Weighted Converter Using Transistor Switches (Current Switch): Figure 17.19 (a) shows a circuit diagram of a weighted converter, using transistor switches. When the D bit is high (logic 1), it produces enough base current to…
Waveguide Switch Design: It is often necessary to prevent microwave power from following a particular path, or to force it to follow another path; as at lower frequencies, the component used for this purpose is…
Waveguide Mixers and Detectors: As we know that ordinary transistor and tube RF amplifiers eventually fail at microwave frequencies, because of greatly increased noise, compared with their low-frequency performance. Unless a receiver is to be…
Waveguide Junctions: When it is required to combine two or more signals (or split a signal into two or more parts) in a waveguide system, some form of multiple junction must be used. For simpler…
Waveguide Isolator and Circulators: It often happens at microwave frequencies that coupling must be strictly a one-way affair. This applies for most microwave generators, whose output amplitude and frequency could be affected by changes in…
Waveguide Coupling: When waveguide pieces or components are joined together, the Waveguide Coupling is generally by means of some sort of flange. The function of such a flange is to ensure a smooth mechanical junction…
Waveform of a Short Circuit Current on Transmission Line: Let us consider the Short Circuit Current on Transmission Line. Certain simplifying assumptions are made at this stage. The line is fed from a constant voltage…
Water Cooler Working Principle and Types: Water is one of the most needed thing for a person. In summer season cold water gives life to a thirsty person. At 10°C water is most refreshing. Thus…
Waste Heat Recovery System: Waste heat recovery system is the heat which is not at all used and exhausted out as a waste product. Waste heat is normally available from the industry in the form…
Ward Leonard Method of Speed Control of DC Motor: Ward Leonard Method of Speed Control of DC Motor is combined armature and field control and is therefore, operationally the most efficient method of speed control…
