DS3820PSFD is a Power Supply Module manufactured and designed by General Electric as part of the Mark IV Series used in GE Speedtronic Gas Turbine Control Systems. The power supply module is a crucial part of the control systems for gas turbines. It is in charge of giving the control systemâwhich is essential for the gas turbine's safe and effective operationâreliable, stable electricity. In a gas turbine control system, the power supply module will typically convert the incoming AC power from the electrical grid into the proper DC voltage levels. To maintain the stability and security of the power supply, the power supply module will often integrate a number of protection measures, such as overvoltage and overcurrent protection.