| 1 mes de $63.00 sin intereses | Total $63.00 | 
 
                            
                                                    
                                 
                            
                                                    
                                 
                            
                                            | 3 meses de $22.66 | Total $67.98 | |
| 6 meses de $11.79 | Total $70.77 | |
| 9 meses de $8.17 | Total $73.61 | |
| 12 meses de $6.39 | Total $76.75 | |
| 18 meses de $4.56 | Total $82.22 | |
| 24 meses de $3.69 | Total $88.72 | 
 
                            
                                            | 3 meses de $22.74 | Total $68.24 | |
| 6 meses de $11.86 | Total $71.16 | |
| 9 meses de $8.29 | Total $74.69 | |
| 12 meses de $6.51 | Total $78.16 | |
| 18 meses de $4.67 | Total $84.19 | |
| 24 meses de $3.80 | Total $91.37 | 
 
                            
                                                    
                                 
                            
                                             
                                     
                             
                            The LM2574 series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving a 0.5A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3V, 5V, 12V, 15V, and an adjustable output version
http://www.circuitsonline.net/forum/view/44966
https://drive.google.com/file/d/1RS0m-U2OL2X_HKcLuz3RlC7nCUFuxkSk/view?usp=sharing
