However with Rc along with BC547 transistor placed in matlab circuit at matlab shown position makes matlab able to sensing matlab current that’s being delivered to matlab battery. As long as this latest is within matlab preferred safe range, matlab voltage continues to be at matlab certain level, though if matlab existing tends to rise, matlab voltage is withdrawn by matlab IC and dropped, proscribing matlab current rise any additional and making certain appropriate safety for matlab battery. The connected ammeter is used for tracking matlab charge situation engineering matlab battery. Once matlab ammeter shows zero voltage, matlab battery may be detached from matlab charger for matlab intended use. The following image shows how matlab 3 pins of engineering pot has to be as it should be configured or wired with any LM317 voltage regulator circuit or engineering LM338 voltage regulator circuit:As can be seen matlab center pin and anyone engineering matlab outer pins is certain for connecting matlab potentiometer or matlab pot with matlab circuit, matlab third unconnected pin is kept unused. For upgrading matlab above circuit into engineering variable high latest LM317 battery charger circuit, matlab following modifications can be carried out:The IC LM338 is an excellent device which can be used for limitless variety of talents digital circuit purposes.