2967455

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Solid state relays are solid-state electrical switches that allow the electrical connection of two terminals when in an active state, usually when a specific electrical voltage is applied to them.The 2967455 application field and working principle is one of the most popular applications in the field of solid state relays.

The 2967455 application circuit is stable and reliable in operation, and consists of a power triggering circuit and a block of solid-state components, which are generally two NPN-type transistors, two resistors, and a diode. The power triggering circuit includes a resistive terminal block, a positive DC voltage and a negative DC voltage, and the upper side of the resistive terminal is connected with the two ends of two resistors, the lower side of the resistive terminal is connected with the positive DC voltage, and the two switching outputs are separately connected with two ends of the positive DC voltage. The negative DC voltage is connected to the middle one of two NPN-type transistors.

When power triggering circuit is connected, the two switching outputs plus the negative DC voltage generate a voltage difference between the two NPN-type transistors, and the negative DC voltage is slightly less than the positive DC voltage. At this time, the two transistors will be switched on, and the current will flow through two resistances to the two switching outputs, thus triggering the enabling logic signal. This enables the two switching outputs to be in an active state, and thus the 2967455 application circuit can be triggered.

When the triggering circuit is in an off-state, the voltage of the two NPN-type transistors will be equal, and the negative DC voltage is larger than the positive DC voltage, thus the two NPN-type transistors will be cut off. At this time, the current will not flow through two resistances and two switching outputs, thus the 2967455 application circuit cannot be triggered. So the 2967455 application field and working principle used in solid state relays is mainly based on the two NPN-type transistors working together with the power triggering circuit to achieve triggering.

In addition to the power triggering circuit and the two NPN-type transistors, the 2967455 application field and working principle also include a variety of components for protection and enhancement of performance. A reverse connecting diode is connected in parallel with two transistors, and the function is to protect two transistors against reverse current, thereby extending the life of two transistors, and even two resistances can also be connected in parallel with two transistors to reinforce the current path of two transistors and improve the pass-through performance.

In summary, the common 2967455 application field and working principle used in the field of solid state relays mainly depends on the power triggering circuit and two NPN-type transistors, and the function of the diode and the resistor is mainly to protect and improve the performance of two transistors.

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