C155B

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Thyristors – SCRs are solid state electronic devices operating with the existing technology which is less temperature dependent and typically used in larger current applications. The C155B is a power controller which is highly efficient in controlling the current and voltage of a circuit.

The C155B power controller utilizes a special kind of thyristor SCR (silicon controlled rectifier) as its element. An SCR is a three terminal device made of four layers of semiconductor material in order to control electric current, voltage and power. It is designed to respond quickly and accurately to changes in temperature or environment. When the anode voltage is applied to the device and the gate voltage is greater than or equal to the anode voltage a conduction channel is established. This conduction channel is used to turn ON the SCR and shall remain ON till the current through the anode-cathode circuit is zero.

The main application field of the C155B power controller is to control the voltage and current of a circuit in order to limit power consumption. It can be used in various applications such as motor control, UPS systems, air-conditioning systems, heating systems, power convretors and more. Other than that, the C155B can also be used for many industrial applications such as temperature control, light dimmer control, overvoltage and overcurrent protection, and it can be used as a switch to control the speed of a motor.

The device works on a simple principle. When an external voltage is applied to its two anode pins, a conduction channel is established between the anode and the cathode. To turn on the SCR, a positive voltage range of 3V-12V shall be applied to the gate pin. When the gate voltage is zero, the SCR will remain OFF, irrespective of the anode voltage. When the gate voltage is greater than the anode voltage, a conduction channel is established between the anode and the cathode, and the current starts flowing through the SCR.

The C155B power controller also has provisions for temperature protection as well. The current rating of SCRs is temperature dependent and at elevated temperatures, precision circuits are required to reduce current and save energy in order to avoid overloading and overheating of the SCR. Therefore, the C155B power controller is designed with an inbuilt temperature monitoring circuit, which continuously monitors and adjusts the current flow.

In conclusion, the C155B SCR is a power controller, which can be used efficiently to control voltage and current of a circuit. It effectively regulates the temperature, current, and voltage and provides protection against overloads, under-voltage and over-voltage conditions. It is designed to respond quickly and accurately to changes in temperature or environment. This device is commonly used in a wide range of applications and is highly efficient in controlling power consumption.

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