P1800SARP Circuit Protection

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Thyristors are a type of semiconductor component that is used for the purpose of switching power and controlling the flow of current. The P1800SARP is a two-quadrant, all solid-state, medium-power thyristor-based power controller used to provide precise control of power from the AC line. This device is designed to provide continuous control of current and voltage in electric motor drives, process heaters, welding, cutting, speed sensitive drives, and other similar applications.

The P1800SARP features low output frequencys to minimize ripple, adjustable input bias voltage, temperature compensation, and linear regulation. It also contains a built-in isolation transformer that isolates the output from the input, preventing power surges. The device is capable of providing smooth and precise control over current and voltage while still providing high reliability and long term stability.

The P1800SARP is constructed using two back-to-back Silicon Controlled Rectifiers (SCR) connected in series. This creates a “floating-gate” element where the gate of one SCR is tied to the anode of the other. This combination of SCRs allows the P1800SARP to switch power between two voltage levels, using a single pulse of AC power. Because of this, the SCR can be reversed without destroying it, allowing the P1800SARP to be continuously controlled over a range of operating patterns.

When the P1800SARP is operated, the voltage applied at its input gates is regulated to a predetermined level, which is then adjusted to control the current or voltage output levels. The current at the output is then adjusted by changing the output voltage. This adjustment of the output can be done manually or by a feedback system, such as a PID controller.

The P1800SARP is capable of controlling power from the AC line and is capable of switching between two voltage levels. This makes it an ideal solution for applications that require precise control of electric motor drives, process heaters, cutting, and welding. The device is also equipped with features that provide excellent reliability and long-term stability.

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