59: Difference between revisions
No edit summary |
No edit summary |
||
| Line 29: | Line 29: | ||
{{EndSpecs}} | {{EndSpecs}} | ||
==Internals== | |||
The Type 59 plug-in contains two tubes, total. | The Type 59 plug-in contains two tubes, total. | ||
Both are [[6BA8]] pentode/triodes. | Both are [[6BA8]] pentode/triodes. | ||
| Line 35: | Line 36: | ||
The remaining triode is used as the trigger pickoff cathode-follower. | The remaining triode is used as the trigger pickoff cathode-follower. | ||
The heater of tubes are supplied with 6.3 V<sub>AC</sub> from the mainframe. | The heater of tubes are supplied with 6.3 V<sub>AC</sub> from the mainframe. | ||
==Pictures== | ==Pictures== | ||
<gallery> | <gallery> | ||
Revision as of 09:18, 13 August 2021
The Tektronix Type 59 is a 400 kHz amplifier for 560-series scopes. It was introduced in 1960, and at $50 (2015 value: $398) it was the lowest cost model of the 560-series plug-ins.
It does not have a calibrated input attenuator. The Type 59 signal input is a pair of banana plugs.
The manual says
The forward end of the chassis has been left free of circuitry in the anticipation that a user may wish to install additional circuitry to fit the Type 59 module to his own special application.
Key Specifications
| Bandwidth | 400 kHz |
|---|---|
| Deflection sensitivity | ~ 1 V/Div |
| Input impedance | 250 kΩ |
Internals
The Type 59 plug-in contains two tubes, total. Both are 6BA8 pentode/triodes. A triode cathode-follower buffers the input. Next is a differential amplifier made of two pentodes. The remaining triode is used as the trigger pickoff cathode-follower. The heater of tubes are supplied with 6.3 VAC from the mainframe.
Pictures
-
From 1961 catalog
-
schematic
