20v power drive pro series battery charger

20v power drive pro series battery charger full#

Hello Sujoy, I assume that you have made the circuit exactly the way it is because itРІР‚в„ўs working with me and other visitors. Also adding some extra lines to the article. If in some cases, it does, then itРІР‚в„ўs common sense to use LM7815 voltage regulator or LM338 High power variable PSU circuit( both are explained on the site.) I still recommend using either 15v DC ready-made adaptor or use the LM7815 Regulator circuit or LM3338 high power variable PSU circuit. You are saying that if someone uses a handmade rectifier circuit then after rectification and filtration, the voltage will bounce nearly 20v, but I donРІР‚в„ўt think or have, not seen it. Now I am adding that line to material list also to make it easy to catch the vision and also clearing those prewritten lines. ItРІР‚в„ўs only when transistor Q1 turns the relay on for battery charger cut-off.Р”Сћnd point, I recommended that to use a 15v DC 1A or 2A adapter in the article to charge the battery which has proper voltage and current regulation of course.

The function of the 27r resistor is just for the relay coil discharge and protection, and Yes itРІР‚в„ўs drawing that amount but itРІР‚в„ўs not active during the battery charging, so it wonРІР‚в„ўt affect any battery charging performance. Cheers and the next tutorial is coming soon on the site. If you liked it or if you have any questions then please do comment down and let me know. Note: An improvement to this circuit can be made: By Mr.Р’В V.Sambath Kumar So, you can go up to 14v and 1.5A charger for adequate and safe charging that may charge your battery in 5.7 hours approx. But the practical condition differs from the bookish info. So, for example, to charge a 12v 10ah battery you need a charger of 14v and 1Amp as an adequate and calculated rating charger. The same is for an inverter battery.Р”Р‡or the charging current specs charging current should be 10% of the Ah rating of the battery. Charging modes also matter like constant-currentР’В charge, toppingР’В chargeР’В and floatР’В charge.Р”Р‡or charging a 12v lead-acid battery, the adequate charge voltage must be 14v-14.7v dc and charging cut-off voltage can be from 13.7v РІР‚вЂњ 14v dc.

The adequate amount of current and charging voltage should be there to perfectly charge a battery under safety.

Below is the image showing how the circuit cuts off the charging when the battery reaches 13.7 or 13.8v.

20v power drive pro series battery charger full#

When the battery reaches 13.7 or 13.8v then suddenly charging stops and red color led glows as an indication for full charging. I have set this circuitРІР‚в„ўs calibration at 13.8v last voltage.After the battery reaches a certain level the transistor bc547 id tuned ON and it drives a relay which in turn changes the COM pinРІР‚в„ўs link from NC to NO which is connected to the red color LED that will start glowing after relay changeover, indicating the battery charging completion.During charging the circuits takes input via a charger /bridge rectifier charger circuit shown above and through the relayРІР‚в„ўs COM and NC, the power is directly connected to the battery.In the above circuit, whole charging is governed by BC337 transistor and relay RL1 acts as the changeover.Or I prefer to use the LM7815 voltage regulator circuit ( 1amps limit) or LM338 High power variable PSU circuit( 2- 5Amps) ( both are explained on the site.) Working of the circuit I prefer to use a 15v DC 1A or 2A adaptor for perfect voltage and current regulation. The circuit diagram for charging control and auto-cut as well as a rectifier for power input with a material list is above. Battery suitable (lead-acid,SMF,SLA,GEL CELL,AUTOMOTIVE) 12v, 1.2ah-20 ah.BUT I RECOMMEND 15V DC 1A OR 2 A DC ADAPTOR SO THAT IT HAS REGULATED VOLTAGE ) or use LM338 Variable PSU Circuit, 2A-5A for bigger batteries.

Transformer 0-15V,2Amp-5Amp ( for battery charging rectifier.

R1 3.3 Ohm or 3R3, 1 Watt or 2 watts -1pcs.

Q1 Transistor Bc547 or bc337(337 will be preferred more)-1pcs.

If it does, then I prefer to use the LM7815 voltage regulator circuit ( 1amps limit) or LM338 High power variable PSU circuit( 2- 5Amps) ( both are explained on the site.) I still recommend using either 15v DC ready-made adaptor or use the LM7815 Regulator circuit or LM338 high power variable PSU circuit. If in some cases, after the rectification and filtration the output voltage can have an increment of about 2v more due to capacitor.