IST Develops App to Calculate Voltage Drop Between LED Drivers and Fixtures

IST announces the launch of its first ever app for Android mobile phones and tablets.

The aptly named Dr Voltz is an intuitive, highly user-friendly app capable of calculating the voltage drop between an LED lighting fixture and an LED driver, depending on the length of cable which links the two, as well as a number of other critical installation factors.

Dr Voltz_Standard Calculator

Dr Voltz simplifies calculating the voltage drop for either constant voltage or constant current LED applications and assists in planning cable runs, cable specifications and LED system parameters to avoid potential onsite LED installation issues.

By downloading the free app from Google Play and entering a series of data values into the Standard Calculator, including the cable diameter, fixture voltage, distance from the fixture to the LED driver and the forward current of the LEDs, the app calculates a voltage drop value for a specific cable length. In addition, the user is also provided with a value at which the driver voltage should be set, in addition to a simple graph demonstrating voltage drop along the length of the cable.

Don’t waste time doing cumbersome calculations in electronic spreadsheets; Dr Voltz provides quick, accurate voltage drop calculations and an automatic warning when the LED forward current exceeds the rated cable forward current.

The Advanced Calculator goes one step further and allows the user to determine the maximum LED forward voltage and number of LEDs within a remotely placed fixture, given an LED driver voltage and cable distance.

IST developed this app in order to facilitate installation designs for its iDrive® centralised LED driver range and customer demand was so high for a simple app that the team released the free app for everyone to use.

The Dr Voltz app is free to download from Google play at and is compatible with Android version 4 and all subsequent software versions.