Showing posts with label Battery Charger. Show all posts
Showing posts with label Battery Charger. Show all posts

Friday, 26 July 2013

Lead Acid Battery Charger 6V -12V

Pengisi Baterai Accu Otomatis ini sangat bagus untuk pengisian Accu Kering dan sangat aman apabila pengisian berlebih karena kalau sudah penuh atau berada diambang batas pengisian maka secara otomatis listrik akan diputus dengan Relay. Charger Accu Otomatis ini dibuat untuk 2 pengisian bisa 6 Volt dan 12 Volt dengan pengaturan tegangan di S2. Ada 2 VR 22k bisa disetel yang satu untuk Accu 6 Volt dan yang satu lagi untuk Accu 12 Volt.

Sumber :

Friday, 29 June 2012

Rangkaian Pengisi Baterai 12 Volt

Rangkaian pengisi baterai ini dapat digunakan untuk mengisi satu atau lebih baterai dengan tegangan nominal sebesar 12 V, yang berarti sepuluh baterai NiCd atau 6x2v lead acid. Rangkaian ini cukup kecil dan dapat dibangun dalam adapter jaringan perumahan. Menghubungkan baterai dengan polaritas terbalik tidak masalah, artinya bisa dipasang bolak balik.

Battery charger circuit schematic

Battery charger PCB Layout

Components List
R1 = R2 = 10K
R3 = 1K
R4 = 5.6K
R5 = R6 = 12Ω
C1 = 1nF
C2 = 220µF / 35V
D1 = 1N4001
D2 = D3 = 1N4148
D4 = green LED
T1 = BD140
T2 = BC546


Friday, 13 April 2012

Battery Charger use Solar Panel

When loading a battery during the day from a solar panel it can be partially discharging through the panel after nightfall. This solar panel power switch circuit replaces the diode and connects the panel to battery through a relay contact. When the power supply voltage is to low the relay is not ON, so the battery is not connected to the solar panel.

When the voltage is high enough to engage the relay and the LDR receives enough light in order to open T1, the relay will switch and the battery will charge.
The relay remains ON even when the solar panel voltage starts to decrease. A battery connected and charged can not action the relay when the light intensity decreases because R2 will block T1. The brightness at which this occurs is set by P1.
Because the power consumption is determined primarily by the relay, it is important that it should a miniature one, with high coil resistance but be capable to switch up to 10 A.
Components list for solar panel to battery switch
R1 = 100Ω
R2 = LDR05
P1 = 25K
D1 = zener diode 9.1V / 1W
D2 = 1N4148
T1 = BC557

Friday, 6 April 2012

Automatic Battery Charger Circuit

Here is a 12 volt Lead Acid battery charger that shut off the charging process once the battery attains full charge. This prevents overcharging of the battery so that, the charger can be left unattended. If the terminal voltage of the battery reduces below the set level, say 13.5 volts, the circuit automatically turns on to the charge mode.
Charging current as well as the power to the circuit is obtained from a 0-18 volt 2 Ampere step-down transformer. The low voltage AC is rectified by the bridge rectifier comprising D1 through D4 and made ripple free by the smoothing capacitor C1. For charging purpose, 18 volt DC is used while to power the circuit, 9 volt regulated DC from IC1 is used. IC2 (CA3140) is used as a simple voltage comparator to drive the relay. Its inverting input gets 4.7 volt reference voltage from the Zener ZD, while the non inverting input gets an adjustable voltage through the POT VR1.So normally, the inverting input pin 2 gets higher voltage from the Zener (as adjusted by VR1) and output of IC2 remains low. T1 then remains off keeping the relay off. The charging current passes to the battery through the NC (Normally Connected) contacts of the relay.
When the terminal voltage of the battery increases to 13.5 volts, pin 3 of IC2 gets higher voltage than pin2 and the output of IC2 becomes high. This activates the relay and the contacts break. Charging current to the battery cut off and the relay remains as such since the battery voltage(13.5V or more) keeps the voltage at pin3 of IC2 is higher than that of pin 2.

Setting: Before connecting the battery, set the input voltage to IC2 using a fully charged battery or variable power supply. Turn the switch S1 to the off position and switch on the power. Then connect a fully charged battery/ variable power supply to test points TP observing polarity. Measure the input voltage to pin 3 of IC2.

Slowly adjust VR1 till the input voltage to pin 3 of IC2 raises to 5 volts. At this point, relay should energize and Red LED turns on. Then connect the battery for charging and switch on S1. If the battery takes charge, current to pin 3 of IC2 will be low since most of the current drain occurs into the battery. This keeps the relay off. When the battery voltage increases above 13.5 volts, no more current passes into the battery, so that the voltage at pin3 of IC2 rises and relay turns on.

Friday, 30 March 2012

NiCad Battery Charger Circuit

This array charger ambit is advised for recharging NiCad batteries based on an AC-powered accepted antecedent method. It can crank out as abundant as 1 amp and can be adapted to go alike college by allotment altered accessories for Q1. Since this ambit uses AC band voltages and currents, amuse exercise acute attention during assembly, turn-on,

Wednesday, 28 March 2012

Broken Charger Connection Alarm

Broken Charger Connection Alarm Circuit Diagram
The above circuit can be useful to detect if the load of any battery charger or plug-in adapter supply is not properly connected. The load can be a set of batteries to be charged or any other type of battery

Saturday, 24 March 2012

Pengisi Battery Li-On dengan USB

USB port it is one of the most useful port. Besides being used as an interface port for the device I / O computer, this port was also used as a filler Li-On Battery (Li-On Battery Charger). Battery charger circuit Li-On can you see in the image below

Pengisi BatterySkema Rangkaian Pengisi Battery Li-On

Solar Lamp Circuit diagram

Here is the simple solution to make an automatic Solar powered lamp. It automatically switches on two high power White LEDs in the evening and stays on for 6 hours using a 6 volt 4.5 Ah rechargeable battery.

Simple Solar Lamp Circuit diagram

A 12 volt solar panel is used to charge the battery during day time. The battery is connected to the input line through the NO and Common contacts of the relay. Diodes D1 and D2 drops 1.4 volts and charge indicator LED uses 1.8 volts. Relay also drops some voltage so that around 8 volts will be available for charging the battery. The high value (4700uF) Capacitor C1 act as a “buffer” for the clean switching of the relay and also prevents “relay clicking” when the input voltage reduces momentarily.

Friday, 23 March 2012

Mobile Phone Travel Charger

Here is an ideal Mobile charger using 1.5 volt pen cells to charge mobile phone while traveling. It can replenish cell phone battery three or four times in places where AC power is not available.

Most of the Mobile phone batteries are rated at 3.6 V/500 mA. A single pen torch cell can provide 1.5 volts and 1.5 Amps current. So if four pen cells are connected serially, it will form a battery pack with 6 volt and 1.5 Amps current. When power is applied to the circuit through S1, transistor T1 conducts and

Solar Charger Circuit (Rangkaian Pengisi Batere dgn Solar Cell)

Here is a solar charger circuit that is used to charge Lead Acid or Ni-Cd batteries using the solar energy power. The circuit harvests solar energy to charge a 6 volt 4.5 Ah rechargeable battery for various applications. The charger has Voltage and Current regulation and Over voltage cut off facilities.

The circuit uses a 12 volt solar panel and a variable voltage regulator IC LM 317. The solar panel consists of solar cells each rated at 1.2 volts. 12 volt DC is available from the panel to charge the battery. Charging current passes through D1 to the voltage regulator IC LM 317. By adjusting its Adjust pin,

Battery Charger 12v SLA

Before we go into the operation of the SLA Battery Charger circuit, there are a number of points we need to cover about the care and use of Sealed Lead Acid batteries.
Firstly, these batteries must be charged, discharged and stored very carefully.
We normally think batteries can be stored for months (if not years) and they will be available for immediate use.
This is not the case with SLA batteries.
If you store a NEW, full charged SLA battery for 6 months or more, you will find it may be fully discharged.

Wednesday, 21 March 2012

Rangkaian Charging battery Mobil

Charging battery Mobil
Skema rangkaian charging battery mobil
This is a simple circuit that can be used for charging (mengisi) car battery. In this circuit there is facility for monitoring the charging current and voltage.

Circuit of charging battery Mobil is based on the IC MC78T12ABT . The IC is nothing but a 7812 in TO-3 package with 3A capacity. The transformer T1 steps the mains voltage to 15V AC and diodes D1&D2 does the job of rectification. Capacitor C1 does the filtering and C2 acts as a decoupling capacitor. The ground terminal of IC1 is lifted to 2.1V using the diodes D3 , D4 and D5 . So the output from the IC1 will be a regulated 14.1V (12+2.1). Battery is charged via diode D6. The D6 blocks reverse flow of current from battery to charging circuit when the mains power is not available. Meter M1 shows the charging current and M2 shows the charging voltage.