Home Made Auto Cut Off 12V Battery Circuit Without Transistor | Best Battery Protection
In this video we are going to make Home Made Auto Cut Off 12V Battery Circuit With Relay Best Battery Protection
Queries Solved:
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Simple auto cut off 12 volt battery charger circuit
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Automatic 12v battery charger
Auto cutoffBattery Circuit
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Lead acid battery charger
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12v battery charger circuit with auto cut off
A non microcontroller project, a battery charger and overvoltage protector. Can be used as universal battery charger for lithium/ lead acid.
Most of the people working in the electronics industry have batteries of different types. Because batteries are the only source to make your projects portable. Some of them may lead acid batteries or lithium-ion batteries. Now these are of different ratings and for every battery we need a separate charger.
To solve this problem, we can make a universal 1.5volt to 12volt battery charger. Output can be selected according to battery ratings through potentiometer. After that we can make a PCB layout and change our circuit idea into a fully functional project.
Circuit diagram has a potentiometer of 10k with resistor in series and controlling the overall action of relay. Here are some changes in the configuration, you can see the ratings of battery and relay in the diagram given below.
All the other things remain the same, just relay and LED protection resistor is changed. Relay coil is always supplied in a parallel reverse baise diode. Which eliminates huge spikes due to voltage across the coil.
If you want to use the same designs as mine then Download PCB Gerber files from here.
I ordered 1.6mm thick PCBs with Hasl finishing, red solder mask. You can try JLCPCB prototype service for your projects. And here is a good news! If you sign-up using this link you will get free coupons worth $30 to order PCB and for SMT assembly service. If you want to know more about JLCPCB and SMT assembly service then see our article “Why I prefer JLCPCB for my projects.
In the above circuit, whole charging is governed by BC547 transistor and relay RL1 acts as the changeover. During charging the circuits takes input via a charger / bridge rectifier charger circuit shown above and through the relay’s COM and NC, the power is directly connected to the battery.
After the battery reaches a certain level the transistor bc547 id tuned ON and it drives a relay which in turn changes the COM pin's 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.
Home Made Auto Cut Off 12V Battery Circuit Without Transistor | Best Battery Protection
In this video we are going to make Home Made Auto Cut Off 12V Battery Circuit With Relay Best Battery Protection
Queries Solved:
auto cut off 12v battery charger circuit using relay
auto cut off 12 valt battery charger using relay
Simple auto cut off 12 volt battery charger circuit
12v battery charger
auto cut off battery charger
homemade
Automatic 12v battery charger
Auto cutoffBattery Circuit
How to make auto cut off battery charger
Lead acid battery charger
12 volt automatic battery charger
12 volt battery level indicator
12v battery charger circuit with auto cut off
A non microcontroller project, a battery charger and overvoltage protector. Can be used as universal battery charger for lithium/ lead acid.
Most of the people working in the electronics industry have batteries of different types. Because batteries are the only source to make your projects portable. Some of them may lead acid batteries or lithium-ion batteries. Now these are of different ratings and for every battery we need a separate charger.
To solve this problem, we can make a universal 1.5volt to 12volt battery charger. Output can be selected according to battery ratings through potentiometer. After that we can make a PCB layout and change our circuit idea into a fully functional project.
Circuit diagram has a potentiometer of 10k with resistor in series and controlling the overall action of relay. Here are some changes in the configuration, you can see the ratings of battery and relay in the diagram given below.
All the other things remain the same, just relay and LED protection resistor is changed. Relay coil is always supplied in a parallel reverse baise diode. Which eliminates huge spikes due to voltage across the coil.
If you want to use the same designs as mine then Download PCB Gerber files from here.
I ordered 1.6mm thick PCBs with Hasl finishing, red solder mask. You can try JLCPCB prototype service for your projects. And here is a good news! If you sign-up using this link you will get free coupons worth $30 to order PCB and for SMT assembly service. If you want to know more about JLCPCB and SMT assembly service then see our article “Why I prefer JLCPCB for my projects.
In the above circuit, whole charging is governed by BC547 transistor and relay RL1 acts as the changeover. During charging the circuits takes input via a charger / bridge rectifier charger circuit shown above and through the relay’s COM and NC, the power is directly connected to the battery.
After the battery reaches a certain level the transistor bc547 id tuned ON and it drives a relay which in turn changes the COM pin's 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.
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