|PIC based 12V battery charger
||...we are form an ISP industry and wanted a custom circuit diagram where we will connect 2 input sources
...solar panel (Optional)
to the circuit now the main work is the the circuit should check if solar panel...charge 12v 42amp battery then it should switch off the AC source(to save power)
if solar power is not
||Electronics, Microcontroller, Electrical Engineering, Embedded Software, PCB Layout
||Oct 22, 2013
||Oct 22, 2013Ended
|Battery switch over & charger circuit diagram
||Battery switch over & charger circuit diagram
The device is powered from a 12 volt...Amp switched mode power supply and also contains a 12 Volt 7 AH seal lead acid battery. Contained is a...a microprocessor and the 12 Volt supply rail which is used by a number of other sub system.
||Nov 13, 2008
||Nov 13, 2008Ended
|LiPo Battery Charger
1. Battery should kick-in only when there is a failure in the supply from 12V DC adapter.
...expecting any control signal.
3. There are two battery backup. One primary and another secondary. Both...for the supply is as follows -> Power Supply -> Primary Battery Backup -> Secondary Battery Backup.
||Aug 4, 2014
||Aug 4, 2014Ended
|Solar Charger Circuit design with Power Supply
||...require a design for a DC power supply with a Lipo battery and a solar charger. See attached PDF for details
||Jan 18, 2015
||Jan 18, 2015Ended
||...We need a battery charger able to charge two serial connected batteries of 18 Ah. The circuit must have...AC power the output voltages must be provided by the battery.
The transition between AC power and...and battery mode should be as smooth as possible and completely transparent because the equipment connected
||Aug 25, 2008
||Aug 25, 2008Ended
|Power electronic -(Battery Charger )
||...logbook can be used for this assignment. All of circuit diagrams, which were created by students themselves
||Oct 8, 2014
||Oct 8, 2014Ended
|Li+ion battery charger circuit
||...-Vin 5 to 24 DC;
-three-stage LED indicators (power present/fault; charging; ready)
||Mar 27, 2009
||Mar 27, 2009Ended
|Electronics Power Supply Modification
||The power supply circuit in the battery charger is rated for 120V.
I am aware that the two of the...When these three components have been changed the charger operates well as it should, but it is also a little...this modification the battery charger worked for only 2 months. The battery charger still turns on but when
||Feb 23, 2013
||Feb 23, 2013Ended
|Alkaline battery charger with voltage control and cut off
||Looking for circuit design.
This is for an alkaline battery charger, powered by batteries and NOT...NOT by 110V/240V home power supply.
When being charged, the voltmeter is not accurate as it reads 2.0~2...actual voltage can be seen.
I need an electrical circuit design where the actual voltage can be seen all
||Engineering, Electronics, Electrical Engineering, PCB Layout, Circuit Design
||Nov 16, 2014
||Nov 16, 2014Ended
|SOLAR STREET LIGHT WITH 12V MPPT SOLAR CHARGER & LED DRIVER
||...AN IC/uP BASED MPPT CHARGER CIRCUIT TO BE DESIGNED FOR CHARGING 12V BATTERY WITH 6 TO 24 AMPS FROM...PANELS OF 60-120WATT PEAK CAPACITY AND LED DRIVER CIRCUIT TO DRIVE UPTO 40LEDS (6 TO 10 COLUMNS OF 3 TO 6...SERIES(1 TO 3WATTS EACH) WHICH SHALL BE DRIVEN FROM 12V BATTERY. THIS IS FOR SOLAR STREET LIGHT PROJECT USING
||Jan 24, 2012
||Jan 24, 2012Ended
|battery charger plus emergency
When line is off, the batteries will supply power to a load.
Must be able to charge from 3 up
||Engineering, Electronics, Microcontroller, PCB Layout, Product Design
||Jul 17, 2011
||Jul 17, 2011Ended
|Rechargeable 12V Power Source
||I need a cheap power source (max $10 cost) that will output 12v 1A. It will use any kind of batteries...7V or 4 AA batteries. It will step-up the battery power to 12V for the output. The batteries are rechargeable...like a 5V DC jack.
12V <--- Step-UP <--- Batteries <--- Controlled Charger <--- 5V input <--- Solar
||May 27, 2014
||May 27, 2014Ended
|Miniature Transformerless Power Circuit
||...or Similar, i wish the following:-
OUTPUT To power a GSM module working
DC volt 3.3vmin - 4.8vmax...50hz
Working off UK mains electricity
Module POWER Requirements TC35i
BEWARE I MAY NEED TO...your solution can meet the standards.
The circuit also must offer some form of regulated voltage
||Apr 19, 2011
||Apr 19, 2011Ended
|Power supply circuit and PCB design needed
||...need a circuit and PCB design for a 5 volt power supply with a battery charge and supply circuit to provide...provide power when the input voltage fails. In effect this is a small simple 5 volt UPS, without any fancy...fancy "on battery" or "supply fail" outputs other than a couple of LED indicators
||May 23, 2008
||May 23, 2008Ended
|Design a linear regulated power supply circuit
||...within the team is to design a Regulated Power Supply Circuit in order to meet the requirements of the...‘off grid’ electrical power is the only option whereby a 12V DC regulated power supply is required.
||Jan 22, 2015
||Jan 22, 2015Ended
|Uninterrupted power supply project
||...low/ under voltage, surge current, overload , battery hysteresis protection. A full report of 10000 words...accordingly. The process of trickle charger is also required for battery protection.
||Electronics, Electrical Engineering
||Feb 7, 2015
||Feb 7, 2015Ended
|Battery charge circuit
||The project consist on a circuit with all funcionatilties needed to perform NiMH and NICd batteries packs...packs charge.
The battery packs will contain a number of cells enouth to deliver 13.8 V on working conditions...operating temperature : -40to + 40C degree
Power Supply : 15 to 20V DC , 20W dynamo
||Electronics, Microcontroller, Electrical Engineering, PCB Layout
||Aug 17, 2011
||Aug 17, 2011Ended
|Design Specialised Li ion battery Charger
||...developing a faster charger for our battery packs that charges each of the 12 cells in our battery packs individually...individually to 3.6v.
The cells in our battery pack can be charged at 3 Amps as a standard charge or...charges each cell individually at least 3 Amps. Our battery packs are just 12 cells in series with a balancing
||Electronics, Electrical Engineering
||Mar 1, 2011
||Mar 1, 2011Ended
|Circuit power supply
||Hi, I have a circuit that was made to accept power and the data from a ps/2 interface (normal computer...keyboard power supply) 5V. Now the powering device has changed, and the new device has a power voltage...signaling voltage of +9V -9V. The microchip on the circuit has been reprogrammed to accept the serial data
||PHP, Engineering, Electronics, Software Architecture, Software Testing, MySQL
||Dec 24, 2005
||Dec 24, 2005Ended
||Electronics, Electrical Engineering, PCB Layout
||Aug 10, 2013
||Aug 10, 2013Ended