Profile image of Bulba39
@Bulba39
Flag of Australia Maudsland, Australia
Member since December, 2010
1 Recommendations

CanDo Inc.

Online Offline
I am electronic design engineer working in R&Ds more than 15 years for international electronic design companies around NZ and Australia. I have extensive experience in many areas including embedded systems, analog and digital design, RF and power electronics. Rich experience in multilayer board design including impedance control, ESD, and EMI noise suppression. High-speed digital signal board design and analog RF board design. Experienced DDR2, Gigabit Ethernet, DC-DC, WIFI, Zigbee, Bluetooth, GSM, GPS, PCI ,Linear Image Sensors, touchscreens. CanDo Inc can solve your electronic puzzle.
$30 USD/hr
26 reviews
6.0
  • 80%Jobs Completed
  • 100%On Budget
  • 100%On Time
  • 39%Repeat Hire Rate

Portfolio

Recent Reviews

  • image of twobitcomputer Project for Bulba39 -- 2 $35.00 USD

    “Project finished on time and on budget. Great work - Thanks!”

  • image of twobitcomputer NewCircuit - DC circuit design in 5 simple, small parts. $35.00 USD

    “Excellent work, Thanks!”

  • image of cameronking11 Manufacture Magnetic sensor $1000.00 AUD

    “Thank you Again...Top quality in the end...Always a pleasure...Highly recommended Freelancer!”

  • image of cameronking11 PCB Designed to detect a Magnet field. $1333.00 AUD

    “Great Freelancer...will hire again...”

  • image of dflohr New project Sequentric $450.00 USD

    “We have hired Bulba39 previously. In this project, like before, his work has been exceptional. He possesses a great skill set and we will definitely be calling on his expertise again.”

  • image of igeorge5149 Battery backup supply $55.50 USD

    “Very challenging project from start, involving detection of an adjustable threshold point and switch to backup battery. The challenge was that both batteries had the same voltage = 3 volts (2xAA and CR2032). The approach taken by the engineer is to set the threshold for switching at 1.6 volts (0.8V*2) Then use an ideal Oring diode made from mosfets to prevent the flow back on the dead battery (regular diode has high drop). They are chips like that made by only 3 companies Maxim outrageous expensive. Intersil no adjustable threshold and just 32mA maximum output. Linear Technology, expensive also. I am very pleased with the engineer job as just in the first half hour he comes up with the concept and working schematic. Due to my customer requests, we had to go many times back and forth to made changes as requested, but all the changes were just in adjusting the values of the original schematic. I highly recommend this engineer for any analog job (my project was analog).”

Experience

Electronics Hardware Design Engineer

Jan 2002

I have designed and developed many 8/32 bit micro-controller based electronics circuits, schematics & PCB layout for Silabs, PIC24s, MSP430s, Atmel AT91SAM7, M16C, STM32 CortexM3 ARM MCUs well as Cyclone, Actel FPGAs, DDR2 SDRAMs, high voltage and power electronics power and discrete transistor circuit design, isolated 10-150Wt AC-DC SMPS , non-isolated DC/DC converters, buck, boost, SEPIC. Peripherals USB,I2C,CAN,RS232-485,SPI,LVDS, SDRAM, EEPROM, MMC, JTAG,SATA I have huge experie

Education

Bachelor Degree

1988 - 1992 (4 years)

Certifications

Diploma (1996)

Publications

Journal of Applied Spectroscopy

Verifications

  • Facebook Connected
  • Preferred Freelancer
  • Payment Verified
  • Phone Verified
  • Identity Verified
  • Email Verified

My Top Skills

Browse Similar Freelancers