LM317T Voltage Regulator with Pass Transistor

Parallel Connection of Voltage Stabilizers. Circuit Engineering. A voltage stabilizer is the primary basis of today's power supply sources. Its technical characteristics determine the functionality of radio electronics. The circuits of different stabilizers are engineered in a variety of different ways with each option having its own peculiarities and parameters. Integrated voltage stabilizers have gained the widest popularity. Power supply units based on these devices are described by the low number of additional electronic components, relatively low cost and efficient characteristics. The majority of radio electronics operate off of power supply units with an increased sourcing current. One of the options for using integrated stabilizers in power supply units is a voltage stabilizer with microchips connected in parallel. Let's look at how such stabilizers work using different examples and considering individual basic circuits. This circuit uses two microchips KPEH5. The operational amplifier DA1 rectifies the drop in voltage at R1 and R2 resistors. The output voltage of the amplifier that is supplied to output 2 of DA2 microchip affects the latter's operation in such a way that the current flowing through it becomes equal to the current flowing through DA3. That's why the overall peak current is added. To avoid the increase in output voltage of the stabilizer without a load we use a ballast - R6. This stabilizer is used with a load that consumes up to 6A. And this is ...



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