The circuit shown here is just a linear power supply, a bridge rectifier and filter capacitor that it attach series voltage regulator. Furthermore, here was provided by a pair of fixed instruments that allow us to know at any time the voltage given in the output and load current used. For this circuit to work properly the load must be at least 5 mA. Integrator has TO-3 package, known as the 2N3055 or BU208. Below is explained how to identify each terminal of the IC LM350K.
