push-pull modulation
11Comparator — For other uses, see Comparator (disambiguation). In electronics, a comparator is a device that compares two voltages or currents and switches its output to indicate which is larger. They are commonly used in devices such as Analog to digital… …
12Radio transmitter design — In plate modulation systems the voltage delivered to the stage is changed. As the power output available is a function of the supply voltage, the output power is modulated. This can be done using a transformer to alter the anode (plate) voltage.… …
13Bande AM — Radio AM La radio AM est un procédé de radiodiffusion à partir d émetteurs utilisant la modulation d amplitude. Ce terme désigne également le récepteur qui permet son écoute. La radio AM est utilisée dans les bandes MF et HF (bandes de… …
14Radio AM — La radio AM est un procédé de radiodiffusion à partir d émetteurs utilisant la modulation d amplitude. Ce terme désigne également le récepteur qui permet son écoute. La radio AM est utilisée dans les bandes MF et HF (bandes de radiodiffusion GO,… …
15Citizen-band — Pour les articles homonymes, voir CB et Cibi (auteur). La citizen band ou CB (de l anglais, bande des citoyens) sont des fréquences allouées (canaux) au trafic radio et ouverte à tous. En français, le sigle CB, qui a parfois été traduit par… …
16All American Five — The All American Five was a mass produced, superheterodyne radio receiver with five vacuum tubes first designed and produced in the USA in the 1930s.The radio was called the All American Five because the design represented the majority of radios… …
17History of radar — The history of radar starts with experiments by Heinrich Hertz in the late 19th century that showed that radio waves were reflected by metallic objects. This possibility was suggested in James Clerk Maxwell s seminal work on electromagnetism.… …
18nervous system, human — ▪ anatomy Introduction system that conducts stimuli from sensory receptors to the brain and spinal cord and that conducts impulses back to other parts of the body. As with other higher vertebrates, the human nervous system has two main… …
19Inverter (electrical) — An inverter is an electrical device that converts direct current (DC) to alternating current (AC)[1]; the converted AC can be at any required voltage and frequency with the use of appropriate transformers, switching, and control circuits. Solid… …
20Amplificateur (sonorisation) — Amplificateur audio Pour les articles homonymes, voir Amplificateur. Un amplificateur Hi Fi à tubes. Un amplificateur audio est un amplif …
