
50% duty cycle and frequency control using external charging transistors and diodes. When the 555 discharge transistor is turned off, the 2N2222 acts as a transmit follower. When the discharge transistor is turned on, 2N2222 is turned off, and C1 is discharged through (R1+R2) at the same rate. The IN4l48 provides temperature compensation.
SCSI CABLES.Small computer system interface (SCSI) is a stand-alone processor standard for system level interface between computer and intelligent devices (hard disk, floppy drive, optical drive, printer, scanner, etc.). SCSI is an intelligent universal interface standard.
SCSI CABLES
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