Latest Space News
Thu, 22 Mar 2018 21:34:25 +0000
The House Science Committee favorably reported bills March 22 that would recognize a NASA center as a center of excellence in rocket propulsion and would resolve a commercial space regulatory issue.
Thu, 22 Mar 2018 18:39:52 +0000
The 2018 defense appropriation may be the one and only chance for Congress to add $600 million for two new satellites given how large of an increase the Pentagon is getting — $61 billion more than last year’s funding.
Thu, 22 Mar 2018 17:28:33 +0000
Spanish startup Zero 2 Infinity will use a 3D-printed combustions chamber for the engines it is developing to power its Bloostar balloon-assisted orbital rocket.
Thu, 22 Mar 2018 17:09:09 +0000
A final fiscal year 2018 omnibus spending bill released March 21 fully funds two key weather satellite programs at NOAA while increasing funding for future weather satellites and space weather efforts.
Thu, 22 Mar 2018 07:00:22 +0000
A final fiscal year 2018 spending bill released by House and Senate appropriators March 21 would give NASA more than $20.7 billion, far above the administration’s original request.
Wed, 21 Mar 2018 22:31:04 +0000
The Air Force's share of the Defense Department's $12.5 billion national security space budget is $11.4 billion.
Wed, 21 Mar 2018 22:03:48 +0000
A Belgian court reversed approval for Inmarsat’s European Aviation Network in the country after fleet operator Viasat challenged the legality of its authorization.
Wed, 21 Mar 2018 19:55:11 +0000
The European Space Agency is revising its e.Deorbit program to look for synergies between the mission and satellite servicing vehicles.
Wed, 21 Mar 2018 19:32:51 +0000
Congress expects to receive from Hyten in June a “warfighting concept of operations” for space. One of the topics will be how to prepare the military for space operations.
Wed, 21 Mar 2018 16:06:41 +0000
Relativity, the startup company developing small launch vehicles using additive manufacturing technologies, announced March 21 an agreement with NASA’s Stennis Space Center to take over one of its test stands.
Wed, 21 Mar 2018 13:20:38 +0000
President Trump's riff on creating a military space force captured the public’s imagination, spawning memes and jokes about starship ninjas gearing up to fight the nation’s wars in space.
Wed, 21 Mar 2018 11:05:37 +0000
The Japanese government, working with private ventures, announced plans March 20 to establish a nearly billion-dollar fund to support the development of space startups in the country.
Wed, 21 Mar 2018 01:24:13 +0000
An Alaskan spaceport will host the first launch of a rocket developed by a stealthy startup company as soon as next week, spaceport officials confirmed March 20.
Tue, 20 Mar 2018 20:40:50 +0000
A decision on a new launch date for NASA’s James Webb Space Telescope, and announcement of any potential breach of its $8 billion cost cap, could come next week, an agency official said March 20.
Tue, 20 Mar 2018 18:20:11 +0000
A letter signed by more than 60 House members calls on the Senate to advance the stalled nomination of fellow congressman Jim Bridenstine to be NASA administrator.
Tue, 20 Mar 2018 17:29:38 +0000
Citing recent reforms that provide more time to orbit a new satellite constellation, satellite broadband-startup OneWeb asked U.S. telecom regulators to nearly triple the size of its authorized low-Earth-orbit constellation.
Tue, 20 Mar 2018 10:53:36 +0000
Citing progress in producing plutonium-238, NASA will allow scientists proposing missions for an upcoming planetary science competition to use nuclear power sources.
Tue, 20 Mar 2018 04:30:11 +0000
Seeking to return a borrowed satellite as soon as possible, Israeli fleet operator Spacecom is very close to purchasing a new satellite dubbed Amos-8, a company official said March 14.
Mon, 19 Mar 2018 17:49:42 +0000
For the space-based infrared SBIRS satellites 5 and 6, the Air Force says the per-unit cost went down 12 percent — from $1.9 billion to $1.6 billion.
Mon, 19 Mar 2018 10:39:02 +0000
Companies that are developing small launch vehicles or who provide rideshare launch services say they expect new Chinese launch vehicles to drive down launch prices, raising concerns among some of unfair competition.
More space news...
18497 cvs - 1030 jobs


  • HOME

  • HOME
  • CV: Team Lead

    Printer Friendly

    << BACK

    Personal information
    Contact information
    Candidate Profile
     Date Submitted:04-09-2016
     Last Modified:04-09-2016 (01:55)
    Job information
     Current job:Team Lead
     Employment Term:Permanent
     Job location:Anywhere
     Date available:within 2 months
     KeywordsPower electronics, design engineer, dc dc converter , switching regulator

    ISRO Satellite Centre, Bangalore, India                            


    To obtain a challenging position that will enable me to use my organizational skills, educational background and ability to work well as a team member. I will work my best to contribute to the growth of the organization and to the growth of my career. I have more than 5 years of experience in development of various kind of power supply like dc-dc converter, power processing unit for various ion thrusters for space application. I also have sound knowledge of various kind of Military standard required for qualify develop products.



    Company       :  ISRO Satellite Centre, Indian Space Research Organization

    Location         :  Bangalore

    Country          :  India

    Job Title         :  Scientist/Engineer

                Job Role        :  Research and development of Power units for ion thrusters and dc-dc converters

                Duration        :  Aug 2011 to till date


    Projects Summary:

    As a member of Power Conditioning and Distribution Section, Power Electronics Division, my major responsibilities are to develop various kind of power supplies required for ongoing projects.

    My contributions are



    Realization of proto and flight model of PPU for ongoing GSAT-9 18mN ion thruster and involved during interface between ion thruster, NCT package and PPU and debug the problems during interface test. Also involved in design and development of PPU for 75mN and 300mN ion thruster for future projects.


    Anode Supply :

    Anode Supply for Gsat-9 18mN ion thruster:

    Realized buck cascade push pull topology based 300V/1.5A constant voltage power supply. Ignition circuit also designed from Anode Supply to ignite thruster with high surge current and also 0.6A constant keeper supply Ored with ignition.

    Development of 550V/1.5A constant voltage module supply to get 550V/3A anode supply (2 modules in parallel) for 75mN thruster and 550V/9A anode supply (6 modules in parallel). Ignition circuit is also designed from Anode supply (requirement of ignition circuit: 300V, 60A surge current). Ignition circuit and anode module are developed and successfully interfaced with 75mN ion thruster.


    Heater Supply

    Heater Supply for Gsat-9 18mN thruster :  Realized isolated 12A constant current power supply   for load range of 0.2 ohm to 1.5 ohm  for GSAT-9

    Heater Supply for 75mN thruster: Developed isolated constant current power supply with DAC interface to get initialization current of 1A, 3A, 5A, 7A and 8.3A constant current for resistance range of 0.2 ohm to 2 ohm. Heater supply is developed and interfaced with 75mN thruster successfully.


    Magnet Supply :

    Magnet Supply for Gsat-9 18mN thruster: Realized magnet power supply of 1.8A for inner magnet and 1.4A for outer magnet with two outputs single power supply.

    Magnet supply for 75mN: Constant current power supply with step change from 1.4A to 1.8A similar to heater supply made for 75mN and successfully interfaced with 75mN thruster.


    Realization of bias supply , Output Filter , switching circuit for 18mN thruster:

    Realization of 3 numbers of 10W fly back topology based converter to provide isolated bias supply to various power module in PPU.

    Realization of filter box between anode supply of PPU and thruster anode

    Switching circuit is also realized to power on and off various power module of PPU


    Interface between proto model of PPU, 18mN ion thruster and NCT package

    Involved during interface between proto model and flight model of GSAT-9 PPU, thruster and NCT control package and troubleshoot problems when encountered.



    BCR For 70V bus :

    Development of 750W BCR (buck converter) Engineering model for autonomous charging of battery in satellite from Bus.

    3D control loop implementation to take care of bus priority over battery charging and taper the current as battery gets fully charge.

    Qualification model of BCR is under progress

    Flight model Is planned for NISAR and RISAT projects



    10 W fly back topology based dc-dc converter with multiple output

    Design and develop 10W three outputs dc-dc converter for 42V and 70V bus.

    Qualify this converter to meet all Military standard like EMI, vibration, thermovac etc

    First flight model Flown in IRNSS-1G


    40 W Single output Forward topology based low voltage high current converter

    Development of 3.3V/8A and 5V/8A single output converter for space application

    Qualification of this converter for both 42V bus and 70V bus

    Planned for future spacecraft like Risat-2, Cartosat-3


    Supervisees the vendors for  Production of 4.5W and 20W converter dc-dc converter

    Supervises the vendors and troubleshoot all problems when encountered during production of fly back topology based 4.5W converter and forward topology based 20W dc-dc converter.

    Involved in modification of 20W converter to work as 60W converter.




    Requirement: Subsystem are facing problem with imported LDO like OM7764 is whenever 1553 transient is there, they observe change in output voltage that degrade the performance of their package. For improvement they are forced to use high value of capacitors which results in oscillation for some users. This is the driving factor for us to develop current control based indigenous LDO which support 1553 transition of no load to 3A also without any overshoot and with less capacitor of 22 uF instead of 680 uF.

    Two versions of LDO were designed. One with Mosfet as a pass element and the other was Transistor as a pass element.

    Both the circuits were simulated using PSPICE.

    The MOSFET based circuit is used in 10W DC-DC converter for output voltage of +5V.

    The transistor based LDO is hybridized and realized as an off the shelf product.

    The pin configuration and the size of the hybridized LDO package is maintained similar to existing imported package OM7764 (IR LDO)

    The HMC was tested for various specifications at ambient temperature and -40 to +65 at thermovac.

    Interacted with SRG for carrying out the derating analysis.




    Simulation of Power processing unit for ion thruster various power supply like Heater, Magnet and Anode in PSIM

    Simulation of Battery charge regulator in PSIM with 3D control system

    Simulation of EMI filter and studied the effect for the same on input impedance of various power supply in PSIM and PSPICE

    Modeling and simulation of 40W (5V/8A) forward converter and 10W fly back converter and 20W forward converter in Simulink/Mat lab and used this model for feedback controller design for converters.


    Modeling of saturable core and simulation of magnetic current sensor       (unidirectional and bidirectional) for sensing dc current up to 1000A in PSIM software without fold back

    Simulation and analysis of effect of multi-junction Solar Array capacitance, inductance and resistance of harness on Switching String for 42V Bus application in ORCAD as well as in  MATLAB.

    Simulation of various analog circuit used during design of power supply in Orcad /Pspice.

    Software Used :  PSIM, Orcad/Pspice, Simulink/Mat lab




    Sound knowledge of various MIL Standard used for space application products like Derating analysis, Thermovac condition, vibration limit, EMI requirement etc.

    Good knowledge of EMI filter design for power supply to meet MIL STD

    Experience in end to end design and development of various topology of dc-dc converter and qualify the design for space application.

    Experience in design and development of low dropout regulator for satellite application

    Experience in Hybridization of dc-dc converter and LDO to reduce the size from SMT version

    Sound knowledge of various software like Pspice, PSIM, Matlab etc

    Experience in working on ADC, DAC and Microcontroller for mixed signal operation.


    Educational Qualification:


    Bachelor in Avionics from Indian Institute of space science and technology with CGPA of  8.73./10 (

    Pre – University course, Bihar intermediate science with Percentage: 75.4%  (3rd topper in state board)

    Matriculation  (Class X), C.B.S.E, with Percentage: 89.4%





    “Simulation And Verification of Discontinuous Mode Fly back Dc-dc Converter Using Simulink” in Mat lab Expo 2014, Bangalore.

    “Effect Of Solar Cell Capacitance And Interface Cable Inductance On The Shunt Switch Current Transients In Spacecraft Power Conditioning Unit” in IEEE international conference ICRAIE-2014, Jaipur.

    “Modeling of Solar array and Analyze the Current Transient Response of Shunt Switch Voltage Regulator in Spacecraft Power Conditioning Unit” in Journal of Advanced Computing and Communication Technologies (ISSN: 2347 - 2804) Volume No.3 Issue No. 2, April 2015 pp 33-39

    Registering is the only way of posting vacancies and obtaining contact details of candidates in our CV database.

    All it takes is a few minutes and a credit card (Visa or American Express). To sign-up to this service, simply click on the Register link and fill in the form. You will then have instant access to our system after on-line payment where you will be able to complete the transaction in either US Dollars, UK Pounds or Euros.

    All online credit/debit card transitions are handled through our secure third party payment processors at WorldPay. Worldpay are part of The Royal Bank of Scotland Group, the 5th biggest banking group in the world, WorldPay payment solutions are trusted by thousands of businesses, big and small worldwide. 

    Pricing starts at €450 (approx £400 or US$500 - use the convert tool for an exact conversion) for one month unlimited job postings and unlimited CV database access (for one user), with package discounts available if you have more permanent recruiting needs. For example, a Gold subscription will give you unlimited jobs posting and unlimited CV database access for one year at just over €250 per month!


    2018 Pricing Structure (excluding VAT):

    1 month - Discovery 450 euros convert
    3 months - Bronze 1150 euros convert
    6 months - Silver 1950 euros convert
    12 months - Gold 3200 euros convert


    If online payment is not convenient, give us a call at +33(0)562211007 or send us an email at We will set up an account for you and invoice you. Note that you can also pay through PayPal.

    Please note that the posting of academic positions is free of charge. All you need to do is email us your job description and we will post it for you.



    Spacelinks is based in France so the following European Union regulations regarding electronic commerce apply:
    - if your business is located outside the EU, VAT does not apply to you
    - if your business is located in France, you will be charged a 20% VAT
    - if your business is located in the EU and you don't have a valid VAT registration number, you will be charged a 20% VAT
    - if your business is located in the EU and you do have a valid VAT registration number, you won't be charged VAT provided you give us your VAT number (mandatory for invoicing)



    For sales enquiries and general information, you can call us on +33(0)562211007.
    Support is available Mon-Fri on +33(0)562211007 or via email. Out-of-hours support is provided only via email.

    Please also note that we are located in France. Our normal office hours are 09:00 to 18:00 Monday to Friday. France timezone is GMT+1.



    We are very serious about our job seekers privacy so only legitimate recruiters and employers are eligible for a recruiter account. All subscriptions requests will be manually approved and recruiter accounts constantly monitored. Users who enter inaccurate or incomplete information will not gain access to post jobs or search resumes. Sharing of login details with a third party will result in the suspension of the recruiter's account with no subscription refund.
    Recruitment agencies are only eligible for a Gold package and recruitment agencies recruiting for companies already using Space Careers will not be accepted.

    To ensure you are approved, please include the following on your application:
    * The website address of your Company. Under construction websites will be rejected.
    * Email - Must end in Applications using free email accounts such as Hotmail, Yahoo or Gmail will be rejected.

    Individual exceptions can be made on a case by case basis by emailing Accounts found not to be in compliance will be deleted.

    Terms & ConditionsCopyright ©2018 Spacelinks
    Web Analytics