Transistor 12v To 5v Converter Circuit. 2n3904 transistor emitter is connected to ground. You can run two leds in series across the resistor r2 while taking input from 12v lead acid battery or a 12v adaptor as an input.
In the event that you have more current necessities at that point you can utilize the circuit that appeared in the third schematic utilizing the lm338 ic which is a 5 a adjustable voltage regulator ic applications and uses. Other end of 1k resistor connect to 2n3904 transistor base 3. Control 5v relay through 3 3v gpio using npn transistor 4 answers closed 2 years ago.
5v ve supply connect to other end of multimeter.
Which is a simple circuit using ic 7805 to the fixed regulator 5 volts and tip41 npn power transistor to increase current up to 2a. You can run two leds in series across the resistor r2 while taking input from 12v lead acid battery or a 12v adaptor as an input. Here is the 12v to 5v dc converter circuit for low current applications 70 ma mainly for taking reference emf voltage and in a small current draining circuit like an led indicator. Other end of 1k resistor connect to 2n3904 transistor base 3.
