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...modification the battery charger worked for only 2 months. The battery charger still turns on but when
||Feb 23, 2013
||Feb 23, 2013Ended
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
Private project or contest #219773
||Project Management, Engineering, Electronics
||Jan 30, 2008
||Jan 30, 2008Ended
Switching Power Supply Design
||...switching mode power supplies. The projects will come on regular basis. You would receive projects designing...design and other types of circuit design. Sometimes we will give you partial circuit and tell you to add other...accomplish a certain functionality for the whole circuit. YOu have to know the Electrical Engineering concepts
||PHP, Audio Services, Engineering, Electronics, Software Architecture, Software Testing, MySQL
||Jan 11, 2007
||Jan 11, 2007Ended
Battery switch over & charger circuit diagram
||Battery switch over & charger circuit diagram
The device is powered from a 12 volt...volt 3 Amp switched mode power supply and also contains a 12 Volt 7 AH seal lead acid battery. Contained...Contained is a microprocessor and the 12 Volt supply rail which is used by a number of other sub system.
||Nov 13, 2008
||Nov 13, 2008Ended
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
Electronic power supply supervisory circuit
||Monitor the outputs of a 7 output dc power supply to determine when each is within its required operating...means of verifying circuit operation (Negotiable, based on complexity of circuit. If needed, I can build
||Engineering, Electronics, Phone Support
||Mar 5, 2009
||Mar 5, 2009Ended
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
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..."supply fail" outputs other than a couple of LED indicators.
The battery circuit must disconnect
||May 23, 2008
||May 23, 2008Ended
PCB Layout and Assembly for small power supply circuit
||I have a simple circuit for a power-over-ethernet power supply, and would like the PCB Layout completed...completed for the circuit. It is a simply circuit that is comprised of only 15 components including bridge...prototype board build and assembled, which I can supply all of the components.
I am attaching the schematic
||Jun 21, 2011
||Jun 21, 2011Ended
||...need a battery charger able to charge two serial connected batteries of 18 Ah. The circuit must have two...AC power the output voltages must be provided by the battery.
The transition between AC power and...to the battery is very delicate.
The battery charger must provide a very good AC filter to handle discharges
||Aug 25, 2008
||Aug 25, 2008Ended
power supply design
Currently used power supplies are resonant circuit design.
Looking to replace resonant...resonant supplies with switch mode using a power corrected front end. We have a design that needs additional
||Mar 6, 2014
||Mar 6, 2014Ended
Design a 19v power supply
||I would like a power supply that meets the following requirements:
Ouput: 19VDC...19VDC 600W minimum
Fits into the standard ATX power supply dimensions:150 mm × 86 mm × 140...140 mm
I would prefer to have a fan circuit with the rpm automatically controlled by the temperature of
||Electronics, Electrical Engineering, PCB Layout
||Nov 11, 2011
||Nov 11, 2011Ended
Private project or contest #206994
||Dec 23, 2007
||Dec 23, 2007Ended
circuit design for a Power Unit
||...engineer to make a schematic (circuit) design for a part (section) of Power Supply Unit with some certain features...features. The Power Unit is for vacuum tube devices, we have both the new vacuum device and the common...common section of Power Unit already made, so we need just a part of the circuit to complete the Unit with
||Engineering, Electronics, Electrical Engineering
||Jan 18, 2012
||Jan 18, 2012Ended
15 W Power Supply
||I need a power supply design that would have a Nominal 12VDC 15 Watt output.
The input would be variable;...(approximate).
It is expected to be a combination of circuit design and transformer design. It must be able
||Engineering, Electronics, Electrical Engineering, Product Design
||May 8, 2013
||May 8, 2013Ended
Power Supply Paper Needed
||I need a paper on how to design a custom power supply. You must know about electrical engineering to...It must be very technical. You must show some circuit diagrams in your paper too. You have to cite the...Agreement).
Electrical Engineering, Power Supply Knowledge
||PHP, Audio Services, Wireless, Engineering, Electronics, Software Architecture, Cisco, Software Testing, MySQL
||Mar 21, 2007
||Mar 21, 2007Ended
Electric Vehicle Charger
||Need a circuit soldered up. It's a schematic found at:
http://4.bp.blogspot.com/_i_c2BM_uBw4/TR9m...have a circuit that's on the right side of that image - the one from "4" up to the charger circuit, that...wire into the car power with a relay or something.
I'm more worried about the circuit telling the "other
||Engineering, Electronics, Microcontroller, Electrical Engineering, Product Design
||Apr 27, 2011
||Apr 27, 2011Ended
Private project or contest #201815
||Dec 5, 2007
||Dec 5, 2007Ended
High Power charger (output up to 345V, 50A) for 3 Phase power supply
||I want to build a charger for a 320V (nominal) batterie pack.
The charger is powered by 3 phase AC...(50Hz) 400V. A B6 rectifier will be used. So the power supply voltage is around 560V rectified.
So I guess...will be provided by a BMS, which talks to the charger by CAN bus. You find the exact CAN specifications
||Engineering, Electronics, Microcontroller, Electrical Engineering, PCB Layout
||Feb 14, 2013
||Feb 14, 2013Ended