| 摘要 |
A drive circuit for terminators in a SCSI (Small Computer Standard Interface) system comprises a bipolar transistor operating in saturated condition to keep the voltage drop to less than 200 millivolts. A second transistor serves to detect when, due to overcurrent conditions, the first transistor goes out of saturation and turns it off. Also provided is means for ensuring that the first transistor turns on before the second transistor on power-up. |
