存心
发表于 2025-3-26 21:57:30
Measuring Instruments and Circuit Constructionim what is going on in the circuit. Today, both . and . meters are available, and both are in common use. The earliest measuring instruments were analogue in nature, and we shall begin by looking at this type.
Crepitus
发表于 2025-3-27 02:21:02
Fabrication Techniques and an Introduction to Microelectronicsctor manufacture, or ‘fabrication’ as it is more generally called in the industry, is a highly specialised and very difficult subject, but it is useful for the electronics engineer or technician to have some idea of the principles involved.
冒烟
发表于 2025-3-27 07:09:39
Amplifiersrger current. The application to a simple machine like a record-player (yes, yes, I know — but CDs are much more complicated and we’ll have to leave them until later) is an obvious one. The small electric signal produced by the player’s pick-up cartridge must be amplified to a sufficiently large extent to drive a speaker.
放气
发表于 2025-3-27 12:10:43
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Moderate
发表于 2025-3-27 16:39:03
Operational Amplifiersmplifier systems are turning more and more to . designs. The operational amplifier (the name goes back to the days when . were more widely used) is perhaps the basic building-block of .. The ‘op-amp’ (a commonly used abbreviation) is designed to be a close approximation to a perfect amplifier.
enflame
发表于 2025-3-27 20:49:28
SafetySafety is important! Electronic engineering is not a particularly dangerous occupation, but it is essential to know basic safety rules and procedures, to be aware when you are getting into a situation that might be hazardous, and to know what to do if the worst happens.
AER
发表于 2025-3-28 00:58:11
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征税
发表于 2025-3-28 05:40:20
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BLINK
发表于 2025-3-28 06:21:28
Thermionic DevicesThomas Alva Edison is chiefly known as the inventor of the phonograph and as one of the inventors of the electric lamp. It is less well known that Edison nearly invented the thermionic diode — the ‘breakthrough’ device that heralded the beginning of the science of electronics.
难听的声音
发表于 2025-3-28 13:23:24
The , Junction DiodeThe special properties of semiconductors are utilised to make a wide variety of electronic components, ranging from diodes to microprocessors. A detailed understanding of one of the simplest semiconductor devices, the ., is an important prelude to a study of more complicated devices, and it is here that we begin.