Before construction, we study the properties of important devices, is regulator IC.
Choosing a regulator IC.
The regulator IC is used to regulates DC voltage, which in this circuit we use an IC numeber of LM317T for the positive voltage and the LM337 circuit for the negative voltage. Both IC have the same features. Thus, So describes specific number LM317T only.
The LM317T is readymade regulator IC can use to adjust voltage from 1.25 volt to 37 volt, there is 3 leg, body same the regulated IC number 7805.
But it batter that can provides to 1.5 A and get input voltage from 3 volt to 40 volt It’s easy to applications and, of these features have advantages over the regular letters IC 78xx series a lot.
In addition, Internal the IC is also circuit is fully protected are the short-circuit protection, input overthe voltage protection, over load protection. And another interesting feature is the elimination the ripple.
The output voltage (Vo) Determined from the formula.
Vo =1.25{1+(R2/R1)}
The R1 is the resistance constant. Which should be between 120-240 Ohm. The R2 can be adjusted from a minimum value (0 ohm) to the value we want. If R2 is equal to 0 ohm minimum output the voltage of about 1.25 volts.
Before construction, we study the properties of important devices, is regulator IC.Choosing a regulator IC.The regulator IC is used to regulates DC voltage, which in this circuit we use an IC numeber of LM317T for the positive voltage and the LM337 circuit for the negative voltage. Both IC have the same features. Thus, So describes specific number LM317T only.The LM317T is readymade regulator IC can use to adjust voltage from 1.25 volt to 37 volt, there is 3 leg, body same the regulated IC number 7805.But it batter that can provides to 1.5 A and get input voltage from 3 volt to 40 volt It’s easy to applications and, of these features have advantages over the regular letters IC 78xx series a lot.In addition, Internal the IC is also circuit is fully protected are the short-circuit protection, input overthe voltage protection, over load protection. And another interesting feature is the elimination the ripple.The output voltage (Vo) Determined from the formula.Vo =1.25{1+(R2/R1)}The R1 is the resistance constant. Which should be between 120-240 Ohm. The R2 can be adjusted from a minimum value (0 ohm) to the value we want. If R2 is equal to 0 ohm minimum output the voltage of about 1.25 volts.
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