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The '''Tektronix 514''' is a monolithic general-purpose oscilloscope introduced in 1949 or 1950. | The '''Tektronix 514''' is a monolithic general-purpose oscilloscope introduced in 1949 or 1950. | ||
It was designed by Tektronix engineers Bob Davis and Dick Rhiger. | It was designed by Tektronix engineers [[Bob Davis]] and [[Dick Rhiger]]. | ||
Using a three-section distributed [[distributed amplifier]], it provides frequency response from DC to 10MHz. | Using a three-section distributed [[distributed amplifier]], it provides frequency response from DC to 10MHz. | ||
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The power supply is regulated based on a -140 V reference produced by a [[OD3]] gas regulator tube. | The power supply is regulated based on a -140 V reference produced by a [[OD3]] gas regulator tube. | ||
The + | The +225 V supply uses three [[5V4G]] rectifier tubes in parallel. | ||
A 514D model exists, which has a 24-section 250 ns lumped L-C [[delay line]]. | A 514D model exists, which has a 24-section 250 ns lumped L-C [[delay line]]. | ||
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<gallery> | <gallery> | ||
File:Tek 514d front.jpg|Front | File:Tek 514d front.jpg | Front | ||
File:Tek 514d dist amp.jpg|Distributed vertical amp | File:Tek 514d dist amp.jpg |Distributed vertical amp | ||
File:Tek 514d delay trimmers.jpg|Delay line trimmer caps | File:Tek 514d delay trimmers.jpg | Delay line trimmer caps | ||
File:Tek 514d bottom.jpg|Bottom view | File:Tek 514d bottom.jpg | Bottom view | ||
File:Tek 514d-vert schem2.png | Vertical amp schematic | |||
</gallery> | </gallery> | ||
[[Category:Monolithic tube scopes]] | [[Category:Monolithic tube scopes]] | ||