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3A1S: Difference between revisions
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clean up, replaced: title=Tektronix → manufacturer=Tektronix |series=560-series scopes |type=, {{Plugin Sidebar 2 → {{Plugin Sidebar, series=560-series scopes → designers=
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m (clean up, replaced: title=Tektronix → manufacturer=Tektronix |series=560-series scopes |type=, {{Plugin Sidebar 2 → {{Plugin Sidebar, series=560-series scopes → designers=) |
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{{Plugin Sidebar | {{Plugin Sidebar| | ||
manufacturer=Tektronix |series=560-series scopes |type= 3A1S | | |||
summary=25 MHz vertical amplifier| | summary=25 MHz vertical amplifier| | ||
image=Tek 3a1s.jpg | | image=Tek 3a1s.jpg | | ||
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introduced=1961 | | introduced=1961 | | ||
discontinued=(?) | | discontinued=(?) | | ||
designers= | | |||
manuals=* [http://w140.com/tek-561s.pdf Tektronix 561S / 3A1S / 3B1S Manual (PDF)] | manuals= | ||
* [http://w140.com/tek-561s.pdf Tektronix 561S / 3A1S / 3B1S Manual (PDF)] | |||
}} | }} | ||
The '''Tektronix 3A1S''' is a vertical plug-in for the [[561#561S|561S]]. | The '''Tektronix 3A1S''' is a vertical plug-in for the [[561#561S|561S]]. | ||
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==Internals== | ==Internals== | ||
The input signal passes through a compensated attenuator switch and | The input signal passes through a compensated attenuator switch and then into a [[7586]] cathode-follower biased with 2 mA plate current. | ||
then into a [[7586]] cathode-follower biased with 2 mA plate current. | |||
The gain stages use a mix of transistors and output stage driving the | The gain stages use a mix of transistors and output stage driving the deflection plates is a transistor/pentode cascode circuit with T-coil loading. | ||
deflection plates is a transistor/pentode cascode circuit with T-coil loading. | |||
The 3A1S is built in traditional ceramic-strip construction. | The 3A1S is built in traditional ceramic-strip construction. | ||