Adjustable Regulator by TL431
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.. 🔗 External reference
Related Circuits
This device is designed to maintain a deep cycle battery using energy harvested from a solar panel. It functions as a combination of a digital clock timer and a solar panel charge controller. Component: .. This circuit serves the dual...
This is an adjustable constant current regulator circuit. This circuit can be used in a bench power supply to prevent the circuits that are tested from being damaged. The adjustable constant current regulator circuit is designed to provide a stable...
This operational amplifier provides a simple approach to creating a single-polarity stable voltage source. The transistor Q1 receives base drive through resistor R1 and conducts to generate a voltage (Vi) across the integrated circuit's supply pins. The operational amplifier...
This current-limiting circuit, illustrated in this example as part of a small bench power supply, could theoretically be utilized alongside any dual-rail current source. The section of the circuit to the left of the diagram restricts the input current...
A high voltage step-up DC power supply using adjustable flyback conversion. The circuit described is a high voltage step-up DC power supply utilizing an adjustable flyback converter topology. This design is particularly effective for applications requiring a significant increase in...
It may be easy to find a precision voltage reference for your application; however, a programmable precision reference is another matter. The circuit in Figure 1 yields a precision reference with an LSB of 62.5 µV. The circuit is...