This is easy circuit charger batt Nicad. For batt 1.2V. When you have NiCad Battery should want to have Battery Charger Circuit. I begs for to advise NiCad Battery Charger this , because of build easy. With the integrated circuit number CA3140. Use the techinque Charger by current be stable.Make the electric charge well. But […]
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Nicad Charger by IC CA3140E
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Discharge Ni-cad battery
Ni Cad battery advantages in that charger to reuse again. And thus may itself be a disadvantage. Because if a user brought back a new charger while the residual voltage will cause the memory effect that this phenomenon is a result. reaction when the battery voltage volt battery to this level of power will not […]
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Simple Ni-cad battery charger with little parts
Nicad battery as the battery is good. Commonly used. If you do not have a battery charger. I recommend this circuit. It is suitable for beginners. But still works great. Charging batteries are commonly used in the circuit because it’s cheap. Because we use a simple little device really. The Ni-cad battery charger circuit can […]
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12V Battery charger using UJT
This is an automatic 12V battery charger circuit, they uses the power SCR and UJT are main parts. And they will not work except the battery 12V to be charged with right polarity, so prevent errors as well. The battery voltage controls the charger and when the battery is fully charged, the charger will not […]
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Best 12V battery charger circuit using LM311
The best 12 Volt battery charger circuit our this is a charger circuit automatic system, then when the battery voltage is lower than specified, this circuit provides power to the battery immediately and stops charging when the battery is fully only. So ideal for use in emergency power supply or battery backup power system at […]
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The most lead-acid battery charger circuit by LM317
When you want to build the lead-acid battery charger project for 6V battery or 12V. Although there are many methods to choose from. I like using IC LM317 Because easy to use, with minimal equipment. Cheap and good. Today, I try to collection ideas for the battery charger circuit. This is just part one. There […]
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Make solar aa battery charger by TL497
Let’s build a small battery savings. In an era of expensive energy better. In an era that energy is more expensive every day. Alternative energy is a good solution, to solve immediate problems, or renewable energy to do the work well. Solar energy is an alternative that we can use another kind. For this project, […]
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Automatic ni-mh battery charger can make by yourself
A nickel-metal hydride battery, also known as NiMH, is a secondary cell.They are used in cameras and other electronic devices. They are widely used Because it’s cheap and has a flow rate capacity of the cells to be used as required. Can replace the generic battery immediately. Important. Can bring to new charging hundreds to […]
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Portable power pack using LM1086 for mobile phones
This project is backup energy when need portable mobile phone that no electrical outlet. we use LM1086 is main on a low dropout voltage, making it has high-efficiency. When we need to take the mobile phone to location-based applications. No electrical outlet to plug in to recharge the battery. and In event that use often […]
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Alarm light circuit for battery charger
This is Alarm light circuit for a general battery charger. It is simplified circuit and cheap, use one transistor BC557 and display with 2 LED. Battery that use with car, motorcycle or Lamps lighting of fishermen. Always is Lead-acid batteries. Which each cell in the battery will have the voltage per cell is about 2.3 […]
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7805 Current constant for battery charger
I used to suggests a lead-acid batteries charger circuit with current constant, which applied many transistors, can use as well. But several people may be not like them because doesn’t convenient ,too many device It is advantage that we have IC-LM7805- 5-volts 1A positive voltage regulator, can build also the current regulation. It is very […]
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Automatic led night light switch
This is the night lighting system with LED display, and from battery power. Because the house is not convenient plug So the charging system with a solar cell. Moderately convenient to use. At night, the LED lights up and LED daytime off and electricity from solar cell charged a 12-volts battery. The guidelines circuit design […]
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Nicad and NiMH Battery Charger by IC LM317T
Here is circuit diagram of the Nicad Battery Charger. It use IC LM317T ( Hot IC) Control Current less 300mA, Size battery 2.4V,4.8V,9.6V.It Low cost circuit. This is a NiCAD battery charger circuit. High-quality, Not necessary to have a full charge and cut, Because this circuit charges with constant current and voltage regulated. But this […]
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Simple auto cut off 12V battery charger
A lead-acid battery charger is most popular though it will very large size than others battery type. But them have advantage are : cheap, easy to buy and long life if correctly uses. The charging is best importance. When I had 10 year old ago. My father bought it to me in first time of […]
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Nicd and Ni-MH battery charger with automatic cuts off
If you need a Nicd and Ni-MH battery charger that automatic cuts off. Which is simple circuit, this project is good ways. It use IC-AN4558 OP-AMP IC. Detection of battery voltage when the power is full. And would be cut off immediately. It is a simple project And budget. How does it works. We are […]
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Automatic OFF 12V Battery Charger by power SCR
This stop current give battery, when Voltage of battery tall arrive at the level that load with full speed already ahead for protect something charger too much poor distilled dry water. This circuit can is usable very wide can use with battery many model. By choose diode and SCR at can durable the trend loads […]
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Simple Ni-Cad Charger for Solar Cell Radio by BD140
A solar cell radio used a 3V (or two 1.2V) Ni-Cad battery in it. The battery can not be removed. It use a mini jack socket for charging. Its quiet difficult to find such a voltage charger. Here is the circuit to convert the voltage from the general power supply.(or Solar cell) It circuit cause […]
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The most lead-acid battery charger circuit by LM317
There are 4 circuits, as follows.
1. The universal battery charger using Lm317
Here comes very simple idea is the universal battery charger circuit. When, an input power is applied to the circuit. The SCR1 (Silicon controlled rectifier) turn off, then not has a bias current path to ground.
The LM317 acts as a current regulator, It is connected to the battery thought a one way diode D1, limiting resistor R1, and a bias resistor R2.
The D1 prevents the circuit from battery discharging, when the power out off from this circuit.
As the battery charges, the voltage across A point potentiometer R5 and some point rises, to turn on the SCR1.
Then current from the regulator LM317 can flow to ground, so now the IC1 is in functions the voltage-regulating mode.
The R6 be used to control the output voltage.
When the SCR1 turn on, it also provides LED1 through R3 with a path to ground.
But when LED1 is on, this circuit is in the voltage-regulating mode, while LED1 is off to be in the current-regulating mode.
2. 6V or 12V lead acid battery charger using LM317
This circuit be lead acid battery charger again interesting circuit, Because it can charger get both of 12V sizes and 6V. By change with switch only and this circuit charging with current about 1Amp. When see the circuit you will think us uses integrated number highly popular circuit be LM317K again. By when you Close SW1 make can charger battery 6V get. Which have voltage come out about 7 Volt. But enough Open SW1 as a result use charging battery 12 V get. Which give volt come out about 14Volt supposing that you use battery 6V 10Ah take time charging current 10 long ago hour. The diode D3 and D4 help protect voltage turn back from battery get. The detail is other see in the circuit.
Note: Or you can use this : Automatic Battery Charger 6V-12V with Relay cut off by LM324 as well.
3. 12V lead acid battery charger by LM317K
Today a close friend visits tell want Dry cell lead acid battery charger circuit 12V 7.5hA sizes. In model to are simple and economize with. I then advise this circuit try build see. By use the integrated circuit voltage regulator the number is highly popular be , LM317K. This circuit has the principle is simple be heal level voltage be stable 13.5 Volt. Because battery must use voltage tall more then charger get follow want.
Which battery of a friend must use current 1A take time charging about 8 hour then will have the electric energy with full speed ahead. The detail is other , see in the circuit. More information
4. Automatic Charger and Full charged indicator using LM317K-TL431
This is circuit Automatic Charger and Full charged indicator. For 24V batteries it can charger with current be stable about 1.5A and have voltage output 27Volt with integrated number circuit LM317K. When the battery has had full already , as a result will cut the work. There is a tube LED show the work with use integrated number circuit LT431 perform check the level , voltage battery and systematically protect short circuit with IC LM317. Unless D2 perform protect wasp a pole battery wrong as well. The IC1 should hold heat sink with. The detail is other , see in the circuit.
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12V Battery charger using UJT
Note: You can see various battery chargers below:
Automatic OFF 12V Battery Charger by power SCR
Automatic Battery Charger 6V-12V with Relay cut off by LM324
Lead acid battery Charger 6V -12V By 555 and LM340
Best 12V battery charger circuit using LM311
The most lead-acid battery charger circuit by LM317
The battery charging current through the SCR MCR3818, when it is triggered into the conducting state by the UJT 2N4851 relaxation oscillator. And the oscillator is only activated when the battery voltage is low. Vb2b1 of the UJT derive the battery voltage that to be charged, and since Vp = Vd = Vb2b1 ; the higher Vb2b1, the higher Vp. When Vp exceeds the breakdown voltage of the zener diode ZD1, the UJT will stop to work and the SCR1 will not conduct.
T1 =Primary – 30 turn #22 , Secondary – 45 turns #22
R1 = Series resistance to limit current through SCR so use MCR3818 at 20 amps.
The setting VR1, we can charge the battery as needed.
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Simple 1.2V AA battery Solar charger circuit
This is simple 1.2V AA battery Solar charger circuit. If you want to charge only one 1.5V AA battery and must used at outdoor that don’t has home electricity. We will also use fast it so we need to application devices near us. This projects is very easy and cheapest because we use a solar […]
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