| 摘要 |
<p>PURPOSE:To suppress an increment of the input current at a falling time of input, by securing an multiemitter type transistor at the input stage and connecting a load resistance to an emitter with the other emitter connected to the base of another transistor respectively. CONSTITUTION:A transistor (TR)T1 of input stage is formed into a multiemitter type, and emitters E1 and E2 are connected to a load resistance R1 and the base of a TRT2 respectively. When the input VIN has a fall, the voltage between the base and emitter E1 of the TRT1 is lower than the sum of the voltage between the base and emitter E2 and the voltage between the collector and emitter of a TRT3. Thus the current that flows to the input terminal VIN with no intervention of the TRT1 is never produced to minimize the value of current.</p> |
