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The RCA connector, also known as phono connector or cinch connector, is a type of electrical connector used to carry very low voltage audio or video signals. The name derives from the RCA company that designed it in the forties. In the fifties, as the high-fidelity home audio systems became more and more popular, the RCA connector began to replace the Jack and DIN connector in the audio components. The RCA connector is normally used with low voltage and current electrical signals, generally no more than 30 V and 500 mA, although there are special RCA connectors with high dielectric strength and current carrying capacity on the market.