| 摘要 |
A constant current source circuit having a first diode connected transistor for providing a first potential, a second diode connected transistor and a first resistor connected in series with the second diode connected transistor for providing a second potential, a comparator compares the first potential with the second potential to provide a first current corresponding to the potential difference between the first and second potentials, third and fourth transistors which respond to the first current to bias the first and second transistors, and a constant current output circuit which responds the first current to provide a constant current output. |
