Frank Bishop


Frank is now a Life Member of I.A.A Vic

Welcome to the Website of Frank Bishop
Inventor and Intron Electronics Pty. Ltd.

The 1970’s was a time of great advancement in Australian Manufacturing. It generated 32 % of the total economy of the nation, and innovation provided many new unique products.

Invention flourished and Australia led the world in many fields.


This website details our product history in the years spanning 1970 through to 2010.

Born in Melbourne Australia in 1942, Frank Bishop completed his Primary and Secondary education before embarking on a 4 year Engineering course at the Royal Melbourne Institute of Technology, graduating as a Radio Engineer in 1969.
He began his professional career at the Defence Standards Laboratory where he learned to appreciate the diverse and disciplined field of science and technology.
He subsequently worked for several electronic manufacturing companies in the fields of testing and design of products.
  In 1975 Frank Bishop registered the Business of INTRON which designed and manufactured its own range of innovative products, and as the business grew, in 1982 Intron was incorporated as Intron Electronics P/L .
The Company began Licensing several of its patents and innovations to other Manufacturers for the next 30 years, Frank retired from business in 2012.
On a personal note, in 1976, realising his future lay in Inventing, Frank joined the Inventors Association of Australia where he learned the fundamentals of the Inventing and Innovation field whilst helping many fellow members with their own ideas along the path to successful products. In 1994 he became President of IAA Vic inc. for a 5 year tenure and now enjoys the honour of being made a Life Member.

Inventions – Portfolio

Digital Multimeter

After working for several years as an Electronics Technician prior to graduating as a Radio Engineer I realised that the portable test  equipment used by Technicians had several shortcomings, they were hard to handle , innacurate , heavy , hard to read , fragile and poorly protected from physical shock..


Movement Sensor

It was during the late 1970’s that the Electronics Industry was needing more information from the world around it. Sensors could giveelectronic circuits the ability to make decisions and respond to changes thus allowing control of the surroundings.


Aqua Tow

In 1981 we installed an above ground pool in the backyard of our home in Melbourne and with the family being keen swimmers it provided many hours of fun and exercise. It occurred to me that I could create an electrically powered tow for use in the pool , at the beach and in the surf , so , without realising what that entailed I prepared a few sketches of a suitable shape for the hull along with a suitable propulsion

Sensor Light

In the 1970’s It was customary that when a family or family member returned home after dark the front light was left on to light up the path and porch for safe entry. This meant that a 100 Watt light was on for up to 12 hours wasting energy and signalling to thieves that the the house may be empty.  


Electronic Watchdog

Our much loved Family dog Shilo had reached an age where he needed to retire from watchdog dutiesand relax. The idea came to mind that an Electronic Watchdog could carry on the good work and allow Shilo to enjoy his retirement years.After some research into what was commercially available I found that no products were made..


Microwave Modules

The Movement Sensor (Patented) proved to have quite a few applications in a variety of electronic products and it was obvious that by expanding the concept of low cost microwave devices the applications would be increased. I decided to offer these in modular form which would require a plastic injection moulding die to be designed and manufactured to house the sensitive circuitry. The most useful module types were as follows :



t was in the early 80’s and Victoria was at the start of a manufacturing boom with many Companies designing and producing new products for the Domestic and Commercial markets. New manufacturing lines required sophisticated product testing machines to ensure that their products worked well, were safe, reliable, withinspecifications and conformed to all the relevant Australian Standards.


Acceleration Gauge

I became a car enthusiast the day I got my driving licence and then spent much of my spare time restoring old sports cars by reconditioning engines,  gearboxes, respraying bodies, restoring interiorsetc. I was interested in the dash board instrumentation and always thought that enthusiasts and mechanics needed a new instrument to better assess their vehicles performance.