An apparatus and method for generating an electrical signal for use inbiomedical applications, including two timing blocks (92, 94) for generatingtiming intervals T1 T7, an interconnection block (96) for combining theseintervals into an output signal having predetermined relationships among theintervals, an output block (104) for transmitting the output signal to a load,and, optionally, a filter (102) for removing unwanted frequency componentsfrom the output signal and an adjustment block (100) for selecting from amonga plurality of output signals with predetermined characteristics. The outputis a repeating succession of a burst of rectangular waves, an equalizing pulse(if needed) to cancel net DC bias in applications for which it is not desired,and a rest period of no signal. In applications where net DC bias is desired,the equalizing pulse may be omitted and the remaining signal featuressuperimposed on a DC potential.
