Specifications:

M7824 is a fixed-voltage integrated-circuit voltage regulator designed for various applications. The LM7824 voltage regulator provides 24V Positive voltage as output to provide a convenient power source for most TTL components. Although designed primarily as a fixed voltage regulator, but it can be used with external components to obtain adjustable voltage.

Voltage regulators are very common in electronic circuits. They provide a constant output voltage for a varied input voltage. The name 7824 signifies two meanings, “78” means that it is a positive voltage regulator and “24” means that it provides 24V as output. So our 7824 will provide a +24V output voltage.

Power dissipation (W):

The output current of this IC can go up to 1.5A. But the IC suffers from heavy heat loss hence a Heat Sink is recommended for projects that consume more current. For example, if the input voltage is 35V and you are consuming 1A, then (35-5) * 1 = 30W. This 30 Watts will be dissipated as heat.

Voltage Regulator(+24V)

This is a typical application circuit of the 7824 IC. We just need two capacitors of value 0.33uf and 0.1uf to get this IC working. The input capacitor 0.33uF is a ceramic capacitor that deals with the input inductance problem and the output capacitor 0.1uF is also a ceramic capacitor that adds to the stability of the circuit. These capacitors should be placed close to the terminals for them to work effectively. Also, they should be of the ceramic type, since ceramic capacitors are faster than electrolytic.

Applications:

• Adjustable Output Regulator
• Current Limiter for certain applications
• Constant +24V output regulator to power microcontrollers and sensors in most of the projects
• Regulated Dual Supply
• Output Polarity-Reversal-Protection Circuit