Description: This is a simple adjustable voltage regulator power supply circuit that utilizes the integrated circuit TL431. The circuit can output a voltage range from 3V to 30V, depending on the configuration.
The adjustable voltage regulator circuit employing the TL431 is designed to provide a versatile power supply solution. The TL431 is a programmable shunt voltage reference that can be configured to deliver a precise output voltage by adjusting external resistors. The output voltage can be set anywhere between 3V and 30V, making it suitable for various applications requiring different voltage levels.
The circuit typically consists of the TL431, two resistors, and a power source. The resistors are connected in a voltage divider configuration to set the desired output voltage. The formula for calculating the output voltage (Vout) is given by:
Vout = Vref * (1 + R2/R1)
where Vref is the reference voltage of the TL431, approximately 1.25V, and R1 and R2 are the resistors in the divider network. By selecting appropriate values for R1 and R2, the output voltage can be finely tuned to the required level.
Additionally, the circuit may include input and output capacitors to stabilize the voltage and reduce ripple, ensuring a clean and reliable output. A diode may also be placed in parallel with the load to protect the circuit from back EMF in inductive loads.
This adjustable voltage regulator circuit is ideal for powering various electronic devices, prototypes, and testing equipment, providing flexibility and efficiency in voltage regulation. Its simple design and ease of implementation make it a popular choice among electronics enthusiasts and professionals alike.This be simple Adjustable voltage regulator power supply circuit, at use integrated number circuit TL431. By from the circuit can fine volt 3V - 30V, depend on..
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