When bipolar transistors of the same hFE are drived by 1mA base current, each of
collector current will be hFE mA. And the difference is outputted to the load.
Current operational amplifier
When bipolar transistors of the same hFE are drived by 1mA
base current, each of
collector current will be hFE mA. And the difference is outputted
to the load.
An attempt to let bipolar transistor work as a pure current
multiplying device.
May ,1998