H11B255S(TB)-V

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Optoisolators are devices which isolate two electrical circuits from each other. An optoisolator, such as the H11B255S(TB)-V, combines an infrared LED with a photovoltaic diode in a single package to achieve this isolation. The H11B255S(TB)-V is a transistor, photovoltaic output optoisolator, meaning that it uses an LED monolithically integrated on a single chip with a photovoltaic diode.

The H11B255S(TB)-V optoisolator is typically used for applications such as sensors, instrumentation, motor controls, digital logic isolators, and analog level shifters. In these applications, the optoisolator is used to transfer electrical signals between circuits without allowing the two circuits to mix or allowing one circuit to affect the other. This prevents current from flowing from one circuit to the other, and also prevents interference from other devices disrupting the signal.

The working principle of the H11B255S(TB)-V optoisolator is based on the concept of photoelectricity. An LED is used to emit infrared light, which is passed through a lens and then converted to electrical energy by a photovoltaic diode. The electrical energy is then used to control the flow of current between the two sides of the optoisolator. The electrical energy produced by the photovoltaic diode is used to control the current in the output circuit, but does not itself contribute to any current flowing through it.

The H11B255S(TB)-V optoisolator also features common-emitter output circuitry, which further enhances its isolation capability. This is because the transistor’s emitter output is isolated from its collector input. This prevents any electrical noise or interference from one side of the circuit to be transferred to the other. As a result, the optoisolator can function even in noisy environments.

The H11B255S(TB)-V optoisolator has a high CMRR rating, which makes it ideal for a variety of applications. The CMRR is the difference between the signal amplitude and the output noise. A higher CMRR rating means that the optoisolator can provide more accurate signal output, which makes it an ideal choice for applications such as signaling, digital logic, motor controls, and level shifting. It is also equipped with enhanced EMI protection, making it resistant to interference from other radio frequencies.

The H11B255S(TB)-V optoisolator provides excellent isolation between two circuits, while still allowing the passage of electrical signals. It is an ideal choice for applications such as sensors, instrumentation, motor controls, digital logic isolators, and analog level shifters. Its high CMRR rating and enhanced EMI protection make it well-suited for a variety of applications that require isolation and accurate signal transfer.

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