LM317 @ 3.3V or 5V only with jumper ? | Electronics Forum ... Check out Sparkfun..they've got a breadboard PSU with a switch for 3.3v and 5v. I've implemented one on a simple AVR prototboard, that just uses a 2 pin header for a jumper. Pretty accurate. But it used 4 resistors as the jumper 'shorted' a resistor in parallel with another. ELECTRONIC PROJECTS: LM317 Power supply 5V 3.3V The output of the LM317 variable regulator is determined by this simple formula: V out = V ref x (1 R2 R1) (I adj x R2) in this case R2 can be the sum of R2 R3 if SW1 is on position 5V. If SW1 is on position 3.3V, R3 is ignored because the current will flow to ground directly via the SW1. V ref = 1.25V r AskElectronics LM317 to reduce 5v to 3.3v schematic ... LM317 may not drop 5v to 3.3v, not enough headroom for its dropout voltage of ~2v.. Any load current may make it tetchy, and that's assuming you actually feed it a solid 5v. If you're getting your 5v from usb, then you can expect it to be as low as 4.3v at your board, and you need a regulator with dropout of 1v or less. 3.3V and 5V from 12V Supply using LM317 blogspot 3.3V and 5V from 12V Supply using LM317 As already explained in the earlier blog entry EmbeddedInEmbedded: ... In this power supply board the 12V DC voltage is converted to 3.3V and 5V separately that can be used for various purposes like supply to development boards, micro controller etc. ... PCB board with only switches for 2 separate modules. lm317 5v to 3.3v datasheet & applicatoin notes Datasheet ... lm317 for 5v to 3.3v. Abstract: LM317 lm317 5v to 3.3v lm317 for 3.3V voltage regulator with lm317 R101 R102 r 102 PICDEM EXPLORER PIC18F87J10 Text: features an adjustable voltage regulator, the venerable LM317. It is U2 on the board, and can be recognized by the TO 220 package that is commonly used for transistors. Nearby is a header, J2, and ... LM317 to output 3.3 Volts MicroController Electronics I created a simple circuit using the LM317 to output 3.3 volts from a 5V or greater input voltage. Why? Because, a number of modules for the Arduino (or Pinguino) take 3.3 Volts.It’s true, some of the Arduinos do have a 3.3V voltage regulator (and thus a source of 3.3V), however, that might not have sufficient amperage. Best Way to go from 12V to 3.3V to power an MSP430G2231 ... Best Way to go from 12V to 3.3V to power an MSP430G2231? Sign in to follow this . Followers 0. ... get a cheap car USB charger from eBay, crack it open and then use something like a LM317 (easily obtainable LDO) to convert the 5V to 3.3V. That way, the nasty irregularities from the car supply have already been taken care of without you having ... voltage Resistors values to use with LM317 Electrical ... "For interest" the LM317 has a minimum dropout voltage of about 1.5V to 2V for most of the range of conditions that would typically apply. (25C, 20 mA to 1A. ) Dropout can be as low as 1V at 20 mA at 150 C (!!!) and as high as 2.5V at 1.5A at either 50C or 150C (!). 2V is a safish value for dropout for scoping calculations. power supply lm317 vs lm1117 for 5v to 3.3v in circuit ... I am wondering if I should use an LM317 or LM1117 for a 5v circuit that needs 3.3v for a sub circuit far (20ft) from the power supply. Any help would be greatly appreciated. Thanks in advance. Ultimate DIY Breadboard Power Supply: 9 Steps (with Pictures) This would give rock solid output, but only for a small number of voltage settings and at the cost of massive amounts of real estate. Pfft. The next option is the venerable LM317 . Using only a small number of components this bad boy can output anything from 1.5V 37V at 1.5A. The chip has 3 terminals input, output and adjustment. The idea ... LM2596 circuit voltage regulator and datasheet ... Do you want a 3A voltage regulator circuit? Before we often you LM350. But now we may use others. Some use LM2596 circuit. It is suitable for easy and convenient use as a step down switching regulator.

lm317 33v or 5v only with jumper Gallery


voltage regulator - lm317 with a load of less than 1 5a

voltage regulator - lm317 with a load of less than 1 5a

a simple idea of making a digitally controlled variable power supply

a simple idea of making a digitally controlled variable power supply

level shifting 5v to 3 3v - can i just use a zener diode

level shifting 5v to 3 3v - can i just use a zener diode

5v to 3 3

5v to 3 3

automotive car power adapter for 3v 6v or 9v dc operated devices

automotive car power adapter for 3v 6v or 9v dc operated devices

lm317 voltage selector power supply 1 5v 3v 4 5v 5v 6v 9v

lm317 voltage selector power supply 1 5v 3v 4 5v 5v 6v 9v

automatic 12v portable battery charger circuit using lm317

automatic 12v portable battery charger circuit using lm317

5vdc to 12v and

5vdc to 12v and

variable voltage regulator with ic lm117k

variable voltage regulator with ic lm117k

3 3v uart with max3232cpe

3 3v uart with max3232cpe

fixed strange relay behaviour not switching on off on gpio 0 1 command

fixed strange relay behaviour not switching on off on gpio 0 1 command

pic24fj64gb002 led blink example with ccs c compiler

pic24fj64gb002 led blink example with ccs c compiler

voltage regulator using the 723 ic cb417

voltage regulator using the 723 ic cb417

diy power supply build

diy power supply build

power supply linear power supply

power supply linear power supply

interfacing esp8266 with pic16f877a microcontroller

interfacing esp8266 with pic16f877a microcontroller

extend battery life with dual power supply for wallcube battery-powered systems

extend battery life with dual power supply for wallcube battery-powered systems

switching power supply page 3 power supply circuits next gr

switching power supply page 3 power supply circuits next gr

ccs view topic

ccs view topic

lm1117mpx

lm1117mpx

tubes and religion new kits and pcbs

tubes and religion new kits and pcbs

how to solve this diode circuit

how to solve this diode circuit

motor driver using 555 timer ic

motor driver using 555 timer ic

5v fan to 3 3v pin

5v fan to 3 3v pin

atmel avr xmega e development board atxmega32e5 32

atmel avr xmega e development board atxmega32e5 32

pmod rs485 reference manual reference digilentinc

pmod rs485 reference manual reference digilentinc

power supply power supply circuits next gr

power supply power supply circuits next gr

xbee module configuration - schematic

xbee module configuration - schematic

mosfet tl431 ldo linear voltage regulator

mosfet tl431 ldo linear voltage regulator

lm1086 datasheet lm1086 pdf 1 5a low dropout positive regulators

lm1086 datasheet lm1086 pdf 1 5a low dropout positive regulators

5v 5a power supply circuit

5v 5a power supply circuit

program a pic microcontroller as an i2c slave device for custom sensor and i o interfacing

program a pic microcontroller as an i2c slave device for custom sensor and i o interfacing

a simple voltage regulator for the diy u0026 39 ers

a simple voltage regulator for the diy u0026 39 ers

door lock circuit page 2 security circuits next gr

door lock circuit page 2 security circuits next gr

grundlagen einf u00fchrung berechnung theorie platine bausatz bauplan schaltplan xc9536 xc9572

grundlagen einf u00fchrung berechnung theorie platine bausatz bauplan schaltplan xc9536 xc9572

elecfreaks

elecfreaks

projet syst u00e8me d u0026 39 alarme programmable

projet syst u00e8me d u0026 39 alarme programmable

mcumall eprom bios chip burner forum

mcumall eprom bios chip burner forum

hologram dash datasheet

hologram dash datasheet

real time clock calendar with remote control

real time clock calendar with remote control

can to usb interface

can to usb interface

single nimh cell simulates a lithium battery

single nimh cell simulates a lithium battery

figure 2 transistor regulator negative ground circuits only

figure 2 transistor regulator negative ground circuits only

vlf converter circuit diagram

vlf converter circuit diagram

program a pic microcontroller as an i2c slave device for custom sensor and i o interfacing

program a pic microcontroller as an i2c slave device for custom sensor and i o interfacing

banana pi bpiduino uno board module compatible with for arduino uno available for raspberry pi

banana pi bpiduino uno board module compatible with for arduino uno available for raspberry pi

attiny85 microusb dev board digispark compatible

attiny85 microusb dev board digispark compatible

lm2596t adj u0441 u0445 u0435 u043c u0430 u0432 u043a u043b u044e u0447 u0435 u043d u0438 u044f

lm2596t adj u0441 u0445 u0435 u043c u0430 u0432 u043a u043b u044e u0447 u0435 u043d u0438 u044f

blog posts

blog posts

lm2596t adj u0441 u0445 u0435 u043c u0430 u0432 u043a u043b u044e u0447 u0435 u043d u0438 u044f

lm2596t adj u0441 u0445 u0435 u043c u0430 u0432 u043a u043b u044e u0447 u0435 u043d u0438 u044f

lm2596t adj u0441 u0445 u0435 u043c u0430 u0432 u043a u043b u044e u0447 u0435 u043d u0438 u044f

lm2596t adj u0441 u0445 u0435 u043c u0430 u0432 u043a u043b u044e u0447 u0435 u043d u0438 u044f

real time clock calendar with remote control

real time clock calendar with remote control

file buck-boost switching regulator xcf

file buck-boost switching regulator xcf

u0646 u0638 u0627 u0645 u0644 u0644 u062d u0645 u0627 u064a u0629 u0627 u0644 u0645 u0646 u0632 u0644 u064a u0629

u0646 u0638 u0627 u0645 u0644 u0644 u062d u0645 u0627 u064a u0629 u0627 u0644 u0645 u0646 u0632 u0644 u064a u0629

interfacing pic24fj64gb002 with lcd

interfacing pic24fj64gb002 with lcd

cdrom sensored brushless dc motor drive with pic16f887 microcontroller

cdrom sensored brushless dc motor drive with pic16f887 microcontroller

3 x 140pcs u shape solderless breadboard jumper cable dupont wire arduino shield sale

3 x 140pcs u shape solderless breadboard jumper cable dupont wire arduino shield sale

program a pic microcontroller as an i2c slave device for custom sensor and i o interfacing

program a pic microcontroller as an i2c slave device for custom sensor and i o interfacing

r3 technical specification

r3 technical specification

wiring esp8266 12 12e with g1 2 liquid water flow sensor for wireless monitoring

wiring esp8266 12 12e with g1 2 liquid water flow sensor for wireless monitoring

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