Delay relay: Difference between revisions
Jump to navigation
Jump to search
mNo edit summary |
No edit summary |
||
| Line 1: | Line 1: | ||
Several tube-era Tektronix oscilloscopes such as the [[549]], [[581]] and [[585]] contain a circuit that delays turn-on of the main supply voltages until the tubes are warmed up. | Several later tube-era Tektronix oscilloscopes such as the [[549]], [[581]] and [[585]] that already use semiconductor rectifiers for the anode voltages contain a circuit that delays turn-on of the main supply voltages until the tubes are warmed up. This is normally not needed in scopes with tube rectifiers because of their inherent soft-start behavior. | ||
A main relay that switches the anode voltages is controlled by a '''thermal delay relay''' such as the 6N045 or 6N030 which is housed in a miniature 9-pin glass tube enclosure. | A main relay that switches the anode voltages is controlled by a '''thermal delay relay''' such as the 6N045 or 6N030 which is housed in a miniature 9-pin glass tube enclosure. | ||
| Line 14: | Line 14: | ||
[[Category: | [[Category:Relays]] | ||