Today I am going to make a circuit of 6V Lead acid battery charger without using transformer.
Let's get started,
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Step 1: Take All Components As Shown Below
Step 2: Connect All Components
Solder all components according to the circuit diagram.
Step 3: Solder 390K Resistor
Firstly we have to solder 390K resistor to both pin of polyester capacitor as solder in the picture.
Step 4: Make a Bridge Rectifier
Next make a bridge rectifier like as picture.
Step 5: Connect Rectifier to Capacitor
Next Solder Bridge rectifier to the capacitor as you can see in the picture.
Solder rectifier according to circuit diagram.
Step 6: Solder 1K Resistor
Next we have to solder 1K resistor as solder in the picture.
Step 7: Connect 3V LED
Now we have to solder an LED.
Connect -ve pin of LED to 1K resistor as shown in picture.
Step 8: Solder Input Power Supply Wire
Now solder Input power supply wire.
We can give 240V AC (50/60 Hz) Input power supply to the circuit.
Connect Phase wire to capacitor and neutral wire to rectifier as solder in the picture/shown in the diagram.
Step 9: Connect Battery
Now connect battery to the circuit as connected in the picture/circuit diagram.
Step 10: Solder +ve of LED
Next solder +ve of LED to the +ve of Battery.
Step 11: HOW TO CHARGE
Give power supply and left it upto 2-3 hours for charging and use this lead acid battery.
NOTE : For constant output DC Power supply connect an Electrolytic capacitor to the Polarity of Battery.We can use capacitor 50V 100uf , 25V 1000uf.
PRECAUTION : This circuit is very dangerous so be careful during the experiment and Don't try to touch circuit when power supply is on.