Wednesday, December 7, 2011

BioTester Demo

Here is a demo of the BioTester before it gets sent out to a customer. The BioTester is the best Biomedical Equipment Tester on the planet and we say that with 20 years of experience in the Biomedical field. Most ECG simulators are either very basic at around $500 with no screen, or come with a screen and cost $1500. The BioTester is priced midway but closer to the $500 units. It has the same or better features as the more expensive units. As for China, the cheapest simulator from there is currently $900 but is very bulky. Features of the BioTester are:

  • Auto Power Off - 4 minutes default
  • User ID screen (in case unit is lost)
  • Backlight - set to 10seconds to conserve battery life
  • Full 10 lead Full function ECG simulator
  • Respiration simulator from 0.1 to 10.0 Ohms
  • Stimulator Tester - this is unique to the BioTester

Thursday, September 15, 2011


Here is an old project which was rediscovered in an old drawer recently - the Medifib. Only two units were ever made and one was sold to a Sydney hospital. The Medifib is designed to give out a 15V square wave at 50Hz and 20mA maximum so that it may be connected to a heart during heart surgery and make it go into fibrillation. During heart surgery, drugs make the heart stop beating so the operation may be carried out, and when the operation is finished, other drugs are injected to let the heart start beating again. If there are any small leaks, the Medifib can then be used to make the heart quiver at 50Hz and allow the surgeon to do the final fixups.

Sunday, June 12, 2011

TEK321 Electronic Heater Controller

This is a Carrier TEK 321 Electronic Heater Controller which was just fixed at SRI. The ignition circuit had stopped working.

Friday, June 3, 2011

SRI Mini Printer

The SRI Miniprinter is now available. This printer was designed for the Datadose dermatology cabinet and the Easybeat veterinary monitor. Unfortunately, the Datadose is now obsolete, and the company which made the Easybeat went in liquidation a few years ago. The printer receives data at 9600 baud through the serial or infrared port, and have several escape sequence which can print lines and barcodes using a computer program. The retail list price is being reviewed next week.

Friday, May 20, 2011

Projects Updated

A Datadose dermatology controller was recently returned for upgrade. Great to see these controllers still working 10 years after the design was finished. The Datadose is an amazing feat of electronics with a backlit touchscreen interface, an onboard patient record log, data log, event log with a real-time clock and a printer interface. The Datadose uses an array of passwords, and has a powerful service mode where the unit can be calibrated. Hospitals which still operate the Datadose Dermatology cabinet include Royal North Shore, RPAH, St George and Liverpool. Wayne Electronics stopped manufacturing these cabinets due to TGA cost registration (>100k/yr) which made manufacturing these cabinets in Australia unfeasible. Thanks TGA!

Tuesday, May 10, 2011

Website upgrade

The Website has just been updated and all links have been checked. The old website is still available here: SRI 2011 website or