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Neon Lamps: Difference between revisions
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[[File:NE-2 lamp.jpg|thumb|right|NE-2 neon lamp]] | |||
'''Neon lamps''' are used for at least three different things in Tek instruments: | '''Neon lamps''' are used for at least three different things in Tek instruments: | ||
# Indicator lamps, e.g., for power, beam position, uncalibrated status, or a decimal point | # Indicator lamps, e.g., for power, beam position, uncalibrated status, or a decimal point | ||
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If the neon lamps fail, the CRT grid voltage will be affected. | If the neon lamps fail, the CRT grid voltage will be affected. | ||
Another common use is for DC bias shifting, e.g. in 500-series timebase circuits. In such circuits, a 56 V Zener diode may be a possible replacement for the neon. | Another common use is for DC bias shifting, e.g. in 500-series timebase circuits, or the horizontal output of the [[511]]. In such circuits, a 56 V Zener diode may be a possible replacement for the neon. | ||
[[File:Neons in 545 timebase circuit.jpg| | 545 timebase: [[File:Neons in 545 timebase circuit.jpg|250px|545 timebase]] 511 H output: [[File:511A H amplifier detail.png|250px|511A sweep output]] | ||
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!Nominal | !Nominal | ||
|- | |- | ||
| NE-2 | | [[NE-2]] | ||
| 150-002 | | 150-002, 150-0002-00 | ||
|align="center"| 76 (60−90) V | |align="center"| 76 (60−90) V | ||
|align="center"| 58 V | |align="center"| 58 V | ||
| Line 50: | Line 51: | ||
|- | |- | ||
| NE-2V | | NE-2V | ||
| 150-030 | | 150-030, 150-0030-00 | ||
|align="center"| 76 (60−90) V | |align="center"| 76 (60−90) V | ||
|align="center"| 58 (46-78) V | |align="center"| 58 (46-78) V | ||
| Line 57: | Line 58: | ||
|- | |- | ||
| NE-23 | | NE-23 | ||
| 150-027 | | 150-027, 150-0027-00 | ||
|align="center"| 74 (60−90) V | |align="center"| 74 (60−90) V | ||
|align="center"| 59 V | |align="center"| 59 V | ||