- Published in issue 12/1994 on page 32
The gyrator, or electronic inductor, is based on a Type NE5532 operational amplifier and can be used in filters and other apphcauons at frequencies of up to 1 kHz. The circuit is particularly useful for applications where large values of self inductance are requtred. It is not good destgn practice to use a gyrator of onlya fewrnH, butwtndmg an inductor of, say, 100 mH is a sufftctently cumbersome task to use a gyrator instead. The present circuit can simulate inductances of 1 mH to well over 100 H.