12V Auto Cut Off + Level Indicator
12V Auto Cut Off + Level Indicator
I will be making a two in one Auto cut off charging controller with battery level indicator for this circuit you need following components a 12 volt relay 1.5 33 and 56 kilo ohms resistors two pieces one and four double zero seven diodes 470 2000 uf capacitor 100 NF tantalum capacitor BC double five seven p and p transistor 10K and 100K multi-turn potentiometers some red green and blue LEDs four pin terminal connector and brain of this project lm3914ic with IC holder I also prepared the circuit diagram for this project where I used lm3914ic to indicate battery charging levels from 10 to 100 percent and on reaching 100 it will automatically cut off charging to battery through this transistor and this connector works as a switch which remains on until battery charging reaches to 100 then it turns off so you can use one line.
I cleaned the PCB with isopropyl alcohol and here our PCB is looking nice and clean now let's place the IC into the base holder connect the DC wires into this connector before connecting to DC set both potentiometers to maximum limit now I will connect multimeter to keep track of voltage also connect variable power supply to calibrate the circuit for the battery I will set lowest voltage to 11.7 volts where it will indicate battery is low now use the screwdriver and rotate the second potentiometer anti-clockwise till the last red LED turns off so the lowest point is set Now set the cut off voltage where battery level should also read as 100 just set it to 13.8 volts you can set it by your choice now use screwdriver and rotate first potentiometer anti-clockwise to Green LED turns on then rotate slowly to clockwise till blue LED turns on so the cutoff voltage is also set now let's try to test the circuit by decreasing voltage you can see on decreasing voltage to 12 volts it will show 10 percent charge left and then below last LED also turns off indicating battery is at zero percent now on increasing voltage back to 12 volts it will indicate 10 percent and on increasing voltage to further it will indicate higher different percentages and on reaching to 13.8 volts blue LED will turn on indicating 100 charged and at the same time cutoff will disconnect charging to battery as discussed earlier this connector works as charger switch it remains on until battery charging reaches 200 it turns off the charger I interfaced this light with the circuit the negative of this light is directly connected with negative and the positive is connected between the switch so when the battery level is low it will turn on charging and when the battery level reaches to 100 it will immediately turn off charging at the cutoff voltage set by you also you can use this connector to show battery levels as graph or dot mode but the preferred mode should be dot mode because it consumes less power for indicating battery levels.
12V Auto Cut Off + Level Indicator
*PCBWay community is a shared platform and we are not responsible for any design issues.
- Comments(0)
- Likes(0)
- 0 USER VOTES
- YOUR VOTE 0.00 0.00
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
- 9
- 10
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
- 9
- 10
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
- 9
- 10
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
- 9
- 10
More by Beytullah Gültepe
- -Simple 12v to 220v mini inverter using 4047 IC IRFZ44Fifth Generation HEXFETs from International Rectifier utilize advanced processing techniques t...
- -Buck Converter LM2596 BUCK CONVERTER LM2596 Voltage Reducer Adjustable Power Module “With the LM2596 Adjustable DC-DC Conv...
- -Automatic Proximity Switch IR Receiver Modules for Remote Control SystemsFEATURES • Very low supply current • Photo detector an...
- -12V BATTERY LEVEL INDICATOR CIRCUIT 12V BATTERY LEVEL INDICATOR CIRCUIT In the circuit I designed, I made a battery level indicator usin...
- 5A adjustable voltage regulator circuit 0-30 volts 5A adjustable voltage regulator circuit 0-30 voltshi guys today I will be making a simple and Powerf...
- Schematic 6 Stage Led Chaser Using Transistor Schematic 6 Stage Led Chaser Using TransistorSchematic 6 Stage Led Chaser Using Transistor Thanks to...
- how to make Automatic cut off 12 volt battery charger NE555 SA555 - SE555Features■ Low turn-off time■ Maximum operating frequency greater than500 kHz■ Tim...
- FM RADIO BEYTSEL Fm Radio Receiver 4 TransistorsFm Radio Receiver 4 TransistorsHere is a very simple and effective ci...
- Flip Flop NEW Flip-Flop CircuitFLIP-FLOPThere are electronic elements whose outputs are stable in two ways with th...
- A Single Battery to Drive Your 5V Loads, Using a 1.2A 96%-Efficient DC to DC Boost Converter The rated voltage of single-cell batteries (such as Lithium-ion/Polymer) is below 5V, which is unsui...
- -NE555 Led Flasher Circuit NE555 LED FLASHER CIRCUITDESCRIPTIONThe 555 monolithic timing circuit is a highly stable controller ...
- How to make powerful inverter 12v to 220v , sine wave , irfz44n How to make powerful inverter 12v to 220v , sine wave , irfz44nThe SG3525A series of pulse width mod...
- -LM7812 Voltage Regulator LM7812 VOLTAGE REGULATORVIN = MIN 15V DCVOUT = 12V DCThe LM340 and LM7805 Family monolithic 3-termin...
- High Power DC to Dc Step Up Boost converter 0-30v Adjustable High Power DC to Dc Step Up Boost converter 0-30v AdjustableThe LM7812 is a three-pin positive volta...
- Police_Light POLICE LIGHTAre you ready for the police lights?As you can see, I made the police lights in the circ...
- Metal Detector METAL DETECTOR Metal detectors work Metal detectors work by transmitting an electromagnetic field fr...
- Basic current constant or current regulator using 7805 7805I am going to show the working of a constant current battery charger circuit. They use a few com...
- 3- DC Motor Speed Control Circuit DC Motor Speed Control CircuitYou will be able to control the speed of your engine much more easily ...
-
BEAPER Nano (Beginner Electronics and Programming Educational Robot) for Arduino Nano ESP32
171 0 0 -
-
-
Open Source Very Large Stick - Freejoy & MMjoy2 breakout board
631 0 0 -
RF Control training board for students based on ESP32 C3
819 0 2 -
Aquarius+ Computer, Standard PCB
1075 0 7 -
KINETIC COASTERS with a TWIST! Laser or 3D Print some DIY Magic
693 0 2 -
RPI - 8 IO PLC With ATTiny85 Watch Dog
589 0 1