As presented in an earlier post, whenever currents pass through the base emitter junctions of two bipolar transistors, it leads to the generation of a differential voltage. This voltage is very useful in the design of circuits such as voltage references, translinear circuits etc. A javascript calculator that allows the calculation of this voltage is now available from the Signal Processing Group Inc website under “Complimentary Items”. Interested parties can download this calculator for free from the SPG website.