| 摘要 |
A push-pull balanced current amplifier comprises two current sources, a feedback resistor, positive and negative power distribution buses, input and output bus, zero bus and eighteen bipolar transistors connected in appropriate manner. The current amplifier comprises nineteenth, twentieth, twenty first, twenty second bipolar transistors, bases and collectors nineteenth and twentieth transistors are connected to collectors of and buses of thirteen and fourteen transistors correspondingly. Emitters of nineteenth and twentieth transistors are connected to positive and negative power distribution buses, emitters of ninth, thirteenth. Fifth and tenth transistors correspondingly, as well as to terminals of first and second current sources correspondingly. Bases of twenty first and twenty second transistors are connected to bases of third and fourth transistors correspondingly, buses and collectors first and second transistors correspondingly, as well as to terminals of first and second current sources correspondingly. Emitters of twenty first and twenty second transistors are connected to collectors of twelve and eleven transistors correspondingly. |
