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BATTERY CHARGER

$250-750 USD

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已发布超过 15 年前

$250-750 USD

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Project characteristics: We need a battery charger able to charge two serial connected batteries of 18 Ah. The circuit must have two basic behaviors. The first one is to charge the batteries and the other is on absence of AC power the output voltages must be provided by the battery. The transition between AC power and battery mode should be as smooth as possible and completely transparent because the equipment connected to the battery is very delicate. The battery charger must provide a very good AC filter to handle discharges, peaks, noises and voltage variations incoming from the AC line. The Battery Charger must work as described below. Battery Charger specifications: Power Input: 94 – 146 VCA or VCC Total Constant Power: 200 W Frequency: 50 / 60 Hz Outputs: • 24 VCD • 13.2 VCD Batteries: Two 12 VCD, 17.2 Ah batteries serial connected. Maximum battery current charge: 1.6A (Is desirable that user can choose how fast the batteries should be charge, Fast 1.6A – Slow 500mA maybe by dip switch select mode). Maximum current per output: 3A Current charger limit: 6A Short circuit protection per output: 10A Minimum efficiency: 70% Operation temperature range: -10 to +55 C Visual Indicators: Low battery Low AC Input Battery mode This is very serious and urgent project, please do not bid if you're not really able to complete it. We need schematics, BOM and two working samples.
项目 ID: 295930

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11提案
远程项目
活跃15 年前

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11 freelancers are bidding on average $480 USD for this job
用户头像
Hello, There, Please, do not hesitate to contact me to discuss any detail regardless the possibilities of winning this bid. Thank you for your attention.
$400 USD 在14天之内
5.0 (54条评论)
5.5
5.5
用户头像
Hello, We are an Electronic Design House based in Pune, India specializing in Prototype Projects and Design Documentation. We have a strong technical team that specializes in Embedded Hardware , Firmware and PC Based Software. We bring to the table strong design and documentation skills. We can understand the design and document it as per user needs. The engineers are extremely fluent in English and working with them will not be an issue. Development work gets done in India and we have a sales team in West LA. We have an excellent network connectivity, VOIP setup for direct communication with US/European/Middle East clients. We will be able to work on this project. We will be able to work on this project. Cost of project will be $750 and it will be completed in 40 days. BOM and PCB costing separately. This is tentative schedule from our side. If you have any plans in your mind then that will be followed and accordingly executed. We can provide references whenever required from US, India and Japan. Please let me know if any other information is required. Regards, Yogesh
$750 USD 在40天之内
5.0 (3条评论)
4.7
4.7
用户头像
Please check PMB for details. Thanks!
$750 USD 在5天之内
5.0 (2条评论)
3.4
3.4
用户头像
I will provide only schematic in this cost
$250 USD 在5天之内
0.0 (0条评论)
0.0
0.0
用户头像
I am a proffetional electornic Engeneer. I assure you a quality service. Give me the change i must give you the performance as best as i can.
$250 USD 在7天之内
0.0 (0条评论)
0.0
0.0
用户头像
I am interested.
$600 USD 在30天之内
0.0 (0条评论)
0.0
0.0
用户头像
Two no. (prototype only) shall be send within timeframe, design/BOM will cost extra.
$350 USD 在25天之内
0.0 (0条评论)
0.0
0.0
用户头像
I can do it on right time please refer pmp
$400 USD 在21天之内
0.0 (0条评论)
0.0
0.0
用户头像
I AM ELECTRONICS PROFESSIONAL AS WELL AS CONSULTANT. ALREADY DONE PROJECTS ON BATTERY CHARGING AND SMPS CIRCUITS
$400 USD 在25天之内
0.0 (0条评论)
0.0
0.0

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MEXICO的国旗
Mexico City, Mexico
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会员自5月 7, 2008起

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