A: Difference between revisions
m (→top: clean up, replaced: {{Plugin Sidebar 2 → {{Plugin Sidebar | designers=, title=Tektronix → manufacturer=Tektronix | model=) |
No edit summary |
||
Line 1: | Line 1: | ||
{{Plugin Sidebar | | {{Plugin Sidebar | ||
manufacturer=Tektronix | model=Type A | | |manufacturer=Tektronix | ||
summary=20 MHz amplifier plug-in | | |model=Type A | ||
image=Tek_type_a_1.jpg | | |summary=20 MHz amplifier plug-in | ||
caption=Tektronix Type 53A | | |image=Tek_type_a_1.jpg | ||
series= | |caption=Tektronix Type 53A | ||
introduced=1954 | | |series=500-series scopes | ||
discontinued=1962 | | |introduced=1954 | ||
manuals= | |discontinued=1962 | ||
|designers= | |||
|manuals= | |||
* [http://bama.edebris.com/manuals/tek/a/ Tektronix Type A Manual (PDF)] | * [http://bama.edebris.com/manuals/tek/a/ Tektronix Type A Manual (PDF)] | ||
<!-- * [http://w140.com/tek_fcp/tek_type_a_factory_cal_proc.pdf Tektronix Type A Factory Calibration Procedure (PDF)] --> | <!-- * [http://w140.com/tek_fcp/tek_type_a_factory_cal_proc.pdf Tektronix Type A Factory Calibration Procedure (PDF)] --> |
Revision as of 09:02, 9 August 2021
The Tektronix Type A is a single-channel preamp introduced in 1959 for 500-series scopes. It provides two inputs and has a switch to select between them. A 545 with a Type A has a system risetime of 18 nanoseconds and a bandwidth of 20 MHz.
The plug-in uses a 12AU6 in the front end as a cathode follower. This input stage drives the second stage, a differential amplifier made of two more 12AU6 tubes. The second stage drives the output stage, a pair of cathode followers made of both halves of a 12AT7 tube. The plate of each output tube is connected to the cathode of the other output tube by a 5 nF capacitor. This "cross-bootstrapping" extends the high-frequency response.
Although 1959 was the first year one could find a "Type A" in the catalog, the same instrument with earlier "Type 53/54A" nomenclature was in the August 1956 Short Form catalog, and its slower Type 53A ancestor was in the August 1954 catalog which introduced the first 500-series scopes, the 531 and the 535. Type 53A has only three tubes, and a bandwidth of 10 MHz in the 530 mainframes. Tek never documented its performance in the 540 mainframes.
Type A was the first letter-series plug-in to be discontinued, in 1962. Customers were told to get Type B instead, although it cost more.
Specifications
Please add
Pictures
-
53A front
-
53A chassis
-
53A chassis bottom
-
53/54A front
-
53/54A top (dirty, missing two tubes)
-
53/54A bottom
-
53/54A left
-
53/54A rear
-
Type A front
-
schematic