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  1. Transistor

    … amount of current amplification is called the current gain, symbol hFE. Types of transistor … to standard (bipolar junction) transistors, there are field-effect transistors which are usually referred to as … the right show the leads for some of the most common case styles. Please note that transistor lead diagrams show …

  2. Magnetic Bubble Memories

    … bubbles to represent data bits. An alternating electric field causes the bubbles to shift down the register. A … read/write operations. The information is thus stored in files or records. Figure 1: Data Arrangement on … on the tape will depend on the number of records or files, since the gaps take up space. A standard tape of 2400 …

  3. Manual telephone Exchange

    … and rural areas with minimal subscriber volume Temporary field telephone networks for military or construction … magneto crank phones were common. Military and Temporary Sites Manual switchboards were used for field telephones … Bell Telephone Exchange Alexander Graham Bell's first public telephone exchange opened in New Haven, CT in 1878. …

  4. Private Automatic Branch Exchange - PABX

    … A PCM-based PABX provides all the facilities like a public Telephone Exchange (LOCAL EXCHANGE). In large … the entire network, enabling seamless communication between sites as if they were a single entity. Flexibility and … with customized voice messages, presenting a professional image and providing callers with initial instructions. …

  5. Understanding the Essentials of Logic Gates

    … build a strong foundation for more advanced studies in the field of computing. Understanding Logic Gates At the … memory retention and comprehension. By building a mental image of an abstract concept, you can achieve a deeper … Interpreting the results of self-tests is crucial for adaptive learning. Instead of focusing solely on right or …

  6. Characteristics of Electromagnetic Waves

    … characteristics of electromagnetic waves . Field of Electromagnetic wave There are two fields of the electromagnetic waves Electric Field Magnetic Field Field Angle of Electromagnetic …

  7. Superheterodyne AM Receiver

    … listeners to tune in to their preferred stations. Public Safety Communications: Superheterodyne receivers are utilized in public safety communication systems, such as police, fire, … from adjacent channels or unwanted signals. Image Rejection: They effectively reject image frequencies …

  8. Privacy Policy / Terms Of Service

    … use the materials for any commercial purpose or for any public display (commercial or non-commercial); attempt to … web site or otherwise relating to such materials or on any sites linked to this site. 4. Limitations In no … Links www.daenotes.com has not reviewed all of the sites linked to its Internet web site and is not responsible …

  9. Transistor codes

    … diagram showing the leads for some of the most common case styles in the Connecting section above. This information is … series of parameters for transistors, each with their own symbol. There are too many to explain here. …

  10. Magnetic Flux

    … permeability is υ = υ 0 υ r H/m MAGNETIC FIELD DUE TO CURRENT IN STRAIGHT CONDUCTOR When a … around the wire. As shown in the fig Magnetic Field Direction to current in straight Conductor Circuit MAGNETIC FIELD OF A COIL Magnetic Field of Coil When …