Reading time: <1 minut The aim is to study the analog oscilloscope HM303-6 of the German company HAMEG. The paper presents the principle of operation of the oscilloscope at the level of the block diagram and the facilities offered by it.
Categories: Vintage electronics
Free online courses in vintage electronics, in digital format (.pdf).
Accidental overvoltages - Circuit elements for limiting voltage peaks
Reading time: <1 minut The most significant part of the electromagnetic disturbances that manifest in the industrial environment is produced by the transient regimes of the electrical equipment and installations as well as by the variations of the amplitude and frequency of the supply voltage over the allowed limits, disturbances that propagate through conduction (supply network). .
Complex study of ferrosilicon sheets - Sheets with oriented grains of high permeability
Reading time: <1 minut This course presents an analysis of the properties and the manufacturing process of Fe-Si GO sheets (with oriented grains).
Electromagnetic compatibility - Disruptions through the power supply network
Reading time: <1 minut Among the main causes generating disturbances through the supply network, we enumerate: switching of power installations; on-the-go reconfigurations of energy subsystems; changing the operating sockets of the transformers; accidental short circuits; overvoltages due to atmospheric electric discharges;
Cathodic oscilloscope - Cathodic tubes with memory
Reading time: <1 minut Among the main topics presented in this course, we list: The cathode ray tube; The structure and operation of the electronic cannon; Multimode cathode ray tube; Cathode ray tubes; Time base adaptations. Self-timing circuit; Probes for oscilloscopes; Oscilloscope with sequential sampling; Random sampling oscilloscope; Oscilloscope with analog memory; The oscilloscope with digital memory.
Programmable Logic Arrays - PLA (Programmable Logic Array), SIGNETICS 82S100
Reading time: <1 minut Programmable logic areas, denoted PLA (Programmable Logic Array), simplify the realization of sequential automata. PLA circuits have great flexibility and can be programmed to perform various complex logic functions.
Family of CMOS integrated circuits
Reading time: 2 minute The CMOS family of integrated circuits was developed around the same time as the TTL family, but initially had a smaller expansion due to longer propagation times and implicitly lower operating frequency (typically between 1 and 10 MHz).
TTL (Transistor Logic Transistor) integrated circuit family
Reading time: 2 minute The TTL (Transistor Logic Transistor) family was introduced by Texas Instruments (USA) in 1965 and has grown continuously by adding new circuits. It is the most widespread family of digital integrated circuits and has constantly influenced the development of digital equipment.
Erasable Programmable Read-Only Memory (EPROM)
Reading time: <1 minut The paper aims to study EPROM circuits. EPROM memory is a ROM (Read Only Memory) that can be electrically programmed to the user.