5.1V ,if i will increase or decrease the value of this resistor, i will take regulated output 4.8V i will reduce again 3.6V and if i will increase the resistor 6.8V my volt in this case you can increase the output level in this video i will demonstrate how you can increase output level of sweet mode power supply this is a special question from one of my valuable viewer this is a special question from one of my valuable viewer how we can increase we can increase easily we take output from any other output section here is V out and we take a simple code from this resistor 2 resistors are collected in series 2 voltage reference you have to change the reference from here you have to change this resistor sometime here is zero diode sometime here is resistor this power supply i have resistor so i will show you how you can do this first of all locate the voltage reference first of all locate the voltage reference here is the voltage reference zener if there is a zener i will give you solution how you can work with deal with zener so today i have a voltage reference this resistor is directly connected to optocoupler the one resistor that is currently in the resistor leave this we have no concern with this resistor so the second one if you see the optocoupler second and is connected to voltage reference voltage reference center point is ground voltage reference center point is ground and output point is connected to this optocoupler and we have two resistors here at one pin now we can see the optocoupler of sorry voltage reference one pin is connected to optocoupler the center pin is connected to ground and one pin is connected to ground resistor one resistor ground and the second resistor is connected to the power supply disk capacitor so we need to change this resistor i will remove this resistor and we will install optocoupler meter and we will check the value of this resistor i will open this resistor first of all you have to take care of something if you think you want to take some extra output so i opened one nth and now set to a home and i will check the resistors it is 998 1 kilo ohm so we will install more than 1 kilo ohm potential meter i connected two wires to this potential meter this potential meter is 5 kilo ohm 5 kilo ohm so first of all i will adjust the center pin and the one pin at 1 kilo ohm so i will connect these two leads to the potential meter the special care if you want to take some extra voltage maybe sometimes you need to replace the output capacitor because this supply is maximum 5 volt and if you want to take the output from the capacitor value then you have to replace the capacitor otherwise the capacitor will damage in this way maybe you will find some deficiency of current this is a current, but no problem so now i remove the resistor from this voltage so i will connect one pin here after 1 meter and the second line here so i will connect these two leads to the potential meter so i will connect these two leads to the potential meter so now i will connect power i am finding 5.1 volt if i will increase or decrease the value of this resistor i will take regulated output 4.1 volt i will reduce again i will increase the resistor so in this case you can increase the output level and maximum regulation will be at 9.5 volt so in this way you can adjust the output voltage and you can use as a regulated output variable power supply in this way we can use this sfps as a variable power supply it is regulated and you can adjust the output of this power supply so you can install up to the meter and this potential meter you can adjust the output level of the sfps what i have done i have just fit here so pin number 1 is here 2 is connected to ground pin number 2 is connected to ground pin number 3 is output so i replace this resistor when i replace this resistor so voltage drop across this center point will change to the reference so output will control the output of the coupler so we can take output 5.5 volt 6 volt so we can control any sfps like this thank you for watching if this video is good for you you can like subscribe here if you want thank you for watching thanks for watching