1. SANTOSH KUMAR SINGH
H/N: 7-1-246/2/B/23, Balkampet
Hyderabad-500016
Phone: +91 9700154145
E-mail: in.santosh@hotmail.com
Resume Highlights:
B.Tech. in Electronics & Telecommunication Engineering,
with 6+ years of experience in the field of Embedded Systems
Work Experience:
Current Employer: Elico Limited. (www.elico.co)
Address: B-90, APIE, Sanathnagar, Hyderabad – 500018.
Experience: From August 2010 till date
Job Title: Design Engineer
Job Profile:
As a design engineer;
 Work in an R & D to design and develop hardware as well as
firmware for analytical instruments.
 Design circuits and analyze functionality theoretically.
 Simulate the design to get its practical response.
 Prepare schematics.
 Design hardware to acquire data from sensors/transducers, process
the acquired data, and send the processed data to PC.
 Interface peripherals to monitor, interpret and drive.
 Debug the hardware design.
 Develop firmware for the hardware and debug it.
 Tune performance of the design.
 Prepare low level design documents (LLD), design sheets and
experiment sheets.
Skills:
 Peripherals interfacing like external memory, ADC, DAC
alphanumeric LCDs, matrix keypads, motors/actuators
 Experience on microcontrollers like MCS-51, ARM family, dsPIC
 Power supplies design using linear & switching regulators, filters
 Amplifiers & Active filters design
 Mixed-signal layout design
 Schematic representation using Altium, Dx-Designer
 Communication protocols like UART, SPI, I2C
 Circuit simulation using Multism, LTSpice, FilterCAD
 Programming languages like C, Assembly
 Handling debuggers like ulink 2, Pickit 3

2. Projects:
#6. ICP-MS (Inductively Coupled Plasma Mass Spectrometer)
Type: New product development
Duration: From Jan 2016 till date
Description:
This is an in house project of Elico Limited. The ICP-MS is an analytical
technique that determines the elemental content of samples. It is
accomplished by counting the number of ions at a certain mass of the
element. An ICP-MS combines a high-temperature ICP (Inductively
Coupled Plasma) source with a mass spectrometer. The ICP source
converts the atoms of the elements in the sample to ions. These ions are
then separated and detected by the mass spectrometer.
Applications:
 Determination of existence of various chemical and physical forms
of a particular element
 Determination of inorganic impurities in drugs and pharmaceuticals
My responsibilities;
 To design high voltage linear variable power supplies with line and
load regulations of 0.01% and having overload protection
 To design a monitoring and control circuit for these power supplies
using ARM Cortex-M4 µC, 12-bit SPI ADC and 16-bit SPI DAC
 To develop a DAQ system to collect the data from the detector
using 16-bit SPI ADC & ARM Cortex-M4 µC
 To develop firmware in C
 To debug hardware and firmware whenever necessary
 To prepare LLD for the same
#5. FTIR (Fourier Transform Infrared Spectrophotometer)
Type: New product development
Duration: From Feb 2013 till date
Description:
This is an in house project of Elico Limited. It measures the
transmittance/absorbance of solid/liquid/gas samples in the IR region of
the light energy. Its unique feature is, it scans the sample through the IR
region (350cm-1
to 7500cm-1
) in one iteration only.
Applications:
 Identification of organic, inorganic compounds
 Identification of polymers
 Biological applications including lipids, proteins, peptides, bio
membranes, nucleic acid, animal tissues, microbial cells, plants,
clinical samples
 Useful in pharmaceutical, food, agricultural, pulp & paper, paint and
environmental fields

3. My responsibilities;
 To develop hardware to drive a moving mirror through a voice coil
actuator using dsPIC µC, 12-bit Parallel DAC and feedback wave
shaping circuits
 To implement PI control algorithm in C to maintain the velocity of
the moving mirror
 To interface detectors using I-to-V converter, amplifiers, filters
 To develop DAQ syatem using ARM7 µC, 16-bit Parallel ADC to
capture the interferogram, save data in a external SRAM and send it
to PC through UART
 To take care of noise in design and layout for higher SNR
requirements by isolating Digital & Analog sections and use of
isolators, isolated power supplies, proper grounding
 To debug hardware and firmware whenever necessary
 To prepare LLD for the same
#4. HPLC Pump (High Performance Liquid Chromatography Pump)
Type: New product development
Duration: From May 2011 to Sep 2013
Description:
This is an in house project of Elico Limited. This is a solvent delivery
module for the HPLC detector. The role of the pump is to force a liquid
(called the mobile phase) through the liquid chromatograph at a specific
flow rate, expressed in millilitres per min (mL/min). Pumps can provide
flow rates from 0.01 mL/min to 10 mL/min and can reach pressures up to
6000 psi. During the chromatographic experiment, a pump can deliver a
constant mobile phase composition.
Applications:
 To use with HPLC detector
My responsibilities;
 To develop hardware to drive a high pressure pump using a high
current bipolar stepper motor in micro-stepping
 To develop firmware to maintain motor’s speed to deliver constant
flow rates (ml/min)
 To monitor online pressure (psi) by interfacing a pressure
transducer with mechanical damper
 To interface pressure transducer using instrumentation amplifier
and microcontroller built-in ADC
 To have safety measures like motor stall, high pressure indicators
 To debug hardware and firmware whenever necessary
 To prepare LLD for the same

4. #3. 4-electrode Conductivity Meter
Type: Feature enhancement
Duration: From May 2012 to Feb 2013
Description:
This is an in house project of Elico Limited. In the four electrode
measurement, the analyzer injects an alternating current through the
outer electrodes and measures the voltage across the inner electrodes.
The analyzer calculates the conductance of the electrolyte solution from
the current and voltage. Because the voltage measuring circuit draws very
little current, charge transfer effects at the metal-liquid interface are
largely absent in four-electrode sensors. As a result, a single four-
electrode sensor has a much wider dynamic range than a two-electrode
sensor.
Applications:
 Monitoring de-mineralisers performance in water treatment plants
 Interface detection of two liquids having different conductivity in
chemical processing industries
My responsibilities;
 To design a relaxation oscillator to generate AC voltage
 To interface 4 electrodes using JFET input Op-Amps with low input
bias current
#2. pH Meter
Type: Up gradation of existing product
Duration: From Feb 2012 to Dec 2012
Description:
This is an in house product of Elico Limited. It measures the potential
difference between a pH electrode and a reference electrode. When we dip
the two electrodes into the test solution, some of the hydrogen ions move
toward the outer surface of the pH electrode and replace some of the
metal ions inside it, while some of the metal ions move from the pH
electrode into the test solution. So, different amount of ion-swapping
takes place on the two sides of the pH electrode. This creates a different
degree of hydrogen-ion activity on the two surfaces of the pH electrode,
which produces a difference in voltage between the electrodes.
Applications:
 To measure the level of acidity or alkalinity of any liquid or solution
My responsibilities;
 To find out replaceable parts for the old/obsolete ones
 To design hardware that replaces the existing manually operative
instrument to a microcontroller based instrument which can
communicate to a built-in PC with touch interface
 To develop firmware for the working of the instrument

5. #1. UV-Visible spectrophotometer
Type: Training
Duration: From Sep 2010 to Apr 2011
Description:
This is an in house product of Elico Limited. It measures the concentration
of a sample in comparison to known concentration of a reference at a
particular wave length. Light from a source focused on a monochromator
which separates out single wave length light. Light is then focused on to a
chopper which splits the light into two paths namely sample path &
reference path. The light after passing through the sample & reference
focused on to a photo detector from where actual data acquisition starts.
Applications:
 Determination of impurities in organic molecules
 Determination of different analytes
 Quantitative determination of compounds that absorbs UV-radiation
My responsibilities;
 To understand the instrument operation
 To get familiar with the components used in the instrument
 To identify any bugs in code written in assembly
 To prepare a flowchart from the assembly code
Education:
Qualification University Year of passing Percentage
B.Tech
(Electronics &
Telecomm. Engg.)
Kalinga Institute
of industrial
Technology,
Bhubaneswar.
2009 7.88
(CGPA on 10 point scale)
Diploma
(Applied
Electronics & Inst.
Engineering)
State Council for
Technical
Education &
Vocational
Training, Odisha.
2005 82 %
High School
Certificate
Examination
Board of
Secondary
Education, Odisha.
2001 80 %
Declaration: I, hereby, declare that, the statements made above are true,
complete and correct to the best of my knowledge and belief.
Date : 1st Sep 2016
Place : Hyderabad