Experimental Study of a New Method of Time Delay for Analog Computers

A new method for obtaining pure delay of voltage waveforms on the analog computer is discussed. This method, which is based upon frequency-domain sampling in combination with a feedforward-feedback technique, is capable of producing relatively long delays. The theory underlying the method has been previously presented. In this paper experimental aspects are described in detail. Particular emphasis is placed upon those topics that are important to the use of the method in actual practice, namely; 1) a general, scaled computer diagram, 2) typical experimental records (which also verify the theory), and 3) a general procedure for programming and debugging. The experimental study has shown that high-quality results are obtainable with this method. Moreover, it is widely applicable to computation and simulation problems, and can easily be programmed.