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Internal resistance
Internal resistance

3366 External Power Supply
3366 External Power Supply

Auto-titrating pH Meter
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... Originally used an LM358 op-amp included in the BS2 kit However, all op-amps are not ideal : Golden Law of op-amp circuitry : input current into terminals should be zero. In reality, this is not the case Small current converted into small voltage and also gets ...
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Three-phase electric power



Three-phase electric power is a common method of alternating-current electric power generation, transmission, and distribution. It is a type of polyphase system and is the most common method used by electrical grids worldwide to transfer power. It is also used to power large motors and other heavy loads. A three-phase system is usually more economical than an equivalent single-phase or two-phase system at the same line to ground voltage because it uses less conductor material to transmit electrical power.The three-phase system was independently invented by Galileo Ferraris, Mikhail Dolivo-Dobrovolsky, Jonas Wenström and Nikola Tesla in the late 1880s.
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