摘要 |
PURPOSE:To avoid a voltage drop as well as an increment of calorific value, by preventing a simultaneous conduction of two units of MOSFETs when the input signal of the circuit varies. CONSTITUTION:The output of the OR gate 34 is supplied to the gate electrode of the P type MOSFETT31, and the output of the AND gate 35 is supplied to the gate electrode of N type MOSFETT32 respectively. the input signal and the output of the delay gate 33 are supplied to the inputs of the gates 34 and 35. In such constitution of circuit, the FETT31 conducts while the output of the gate 34 is at a low level, and the FETT32 conducts while the output of the gate 35 is at a high level. Accordingly, a simultaneous conduction is avoided for both the FETT31 and T32 when the input signal of the circuit varies. As a result, no useless current flows between the both power sources to prevent both the voltage drop and an increment of calorific value. Thus the fault affecting other circuits can be eliminated. |