24v Voltage Regulator
Learn how to build a 24V voltage regulator using the KIA7824A IC. Provides a stable 24V DC output for electronic devices, circuits, and industrial projects.
KIA7824A voltage regulator circuit
A fixed 24V DC output is obtained with a voltage regulator based on the KIA7824A IC that uses a higher input source. It makes sensitive electronic circuits stable.
24V regulated power supply IC
KIA7824A is a linear voltage regulator IC that is used to stabilize a 24V DC output. It is part of the 78xx series regulators, with 24 being fixed at 24V. Under favorable conditions (input supply and heatsink), this IC is capable of producing up to 1A of output current. The nominal input voltage must be 27 V DC (to allow for dropout margin) and should not exceed 40V. In a simple circuit, DC voltage at the transformer and rectifier, and filter capacitors are connected to the input pin of KIA7824A. The ground pin and the output pin supply a regulated 24 V DC, respectively. To enhance stability, small bypass capacitors 0.33 μnFf at input and 0.1 μnF at output are advisable. In the case of increased current loads, one can add an external pass transistor. The device finds many applications in industrial control boards, communications equipment, instrumentation, as well as DIY electronics projects where a 24V supply is needed but is voltage-stable.
Work / Installation (Inputs → Outputs)
The input pin of the KIA7824A is connected to the input voltage (27V -35V DC). It is regulated by the IC and gives a DC 24V at the output pin at all times. The ground pin should be properly connected to the negative rail. An input filter capacitor eliminates ripples, whereas an output capacitor enhances the stability of the load. A heatsink is necessary to be used with heavy current.
Testing & Final Adjustments
Once the circuit has been assembled, attach a DC source of approximately 30V to the input. Measure through a multimeter; the reading should be 24V DC. Test with low loads such as LEDs or sensors. In case stable, progressively join more loads. Check voltage drops under load; decrease in output, check input voltage, and increase filter capacitor. Note the temperature of the IC, stick it on a heatsink when it becomes hot. To be accurate, capacitors must be of high quality, and the grounding should be made correctly. This system provides steady and ripple-free 24 V DC power to your electronics work and industry.
