157-0053-00: Difference between revisions
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The '''157-0053-00''' denotes a matched pair of [[12BY7]](A) ([[154-0047-00]]) pentodes. The matched pair is found in the vertical input stage of many early [[500-series scopes]]. | |||
==Matching Conditions== | |||
*Heater: Nominal ±2% | |||
*Plate voltage: 150 V ±1% | |||
*Screen voltage: 100 V ±1% | |||
*Cathode current: 19 mA ±1% | |||
==Selection Requirements== | |||
A: Cathode bias of two tubes of a pair shall be within 50 mV. | |||
B: Grid current shall be less than 3 μA. | |||
==Selected part use== | |||
*[[531]] | |||
*[[533]] (V504 & V524) | |||
*[[535]] | |||
*[[536]] | |||
*[[541]] | |||
*[[543]] | |||
*[[545]] | |||
*[[555]] | |||
[[Category:Pentodes]] | |||
[[Category:Selected Tubes]] | |||
Latest revision as of 05:17, 25 June 2024
The 157-0053-00 denotes a matched pair of 12BY7(A) (154-0047-00) pentodes. The matched pair is found in the vertical input stage of many early 500-series scopes.
Matching Conditions
- Heater: Nominal ±2%
- Plate voltage: 150 V ±1%
- Screen voltage: 100 V ±1%
- Cathode current: 19 mA ±1%
Selection Requirements
A: Cathode bias of two tubes of a pair shall be within 50 mV.
B: Grid current shall be less than 3 μA.