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The output voltage adjustment can be manual or automatic. The manual type is applicable only for relatively low voltage and is known as a variable AC transformer (often referred to by the trademark name Variac). These are often used in repair shops for testing devices under different voltages or to simulate abnormal line voltages.
Transformer oil is flammable, so oil-filled transformers inside a building are installed in vaults to prevent spread of fire and smoke from a burning transformer. Some transformers were built to use fire-resistant PCBs , but because these compounds persist in the environment and have adverse effects on organisms, their use has been discontinued ...
A variable-frequency transformer is a doubly fed electric machine resembling a vertical shaft hydroelectric generator with a three-phase wound rotor, connected by slip rings to one external power circuit. The stator is connected to the other. With no applied torque, the shaft rotates due to the difference in frequency between the networks ...
Unless you have a 240 V version which is available by special order, then it is wise to use a Variac (variable transformer) to drop the power to the required 220 V for the amplifier's mains transformer, as notwithstanding EU mains harmonisation, the UK's 240v voltage has never changed, the continental Europe tolerance for 230v instead changing ...
The Eagles are in the midst of a magical season, but the magic could run out quickly without their star quarterback.. Jalen Hurts is one of the Eagles players that Philadelphia can least afford to ...
Cutaway view of an LVDT. Current is driven through the primary coil at A, causing an induction current to be generated through the secondary coils at B.. The linear variable differential transformer (LVDT) – also called linear variable displacement transformer, [1] linear variable displacement transducer, [2] or simply differential transformer [3] – is a type of electrical transformer [4 ...
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