DELAY CIRCUIT

PROBLEM TO BE SOLVED: To provide a delay circuit by which delay time adjustment with high precision is attained with a simple operation. SOLUTION: A bias generator 1 provides a bias voltage B that is used to change the DC level of an output voltage according to a control signal CONT to capacitors C1-C3 which are connected to each inter-stage point of delay elements 3-9 connected in series. The capacit'o-r of the capacitors C1-C3 is adjusted by changing the bias voltage B from the variable bias generator 1. Since an output load capacit' of the delay elements is changed according to this adjustment, the delay time is adjusted.