121: Difference between revisions
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common-cathode amplifier. | common-cathode amplifier. | ||
* [http://bama.edebris.com/download/tek/121/tek%20121.pdf Tektronix 121 Manual (PDF)] | * [http://bama.edebris.com/download/tek/121/tek%20121.pdf Tektronix 121 Manual (incomplete, PDF)] | ||
<gallery> | <gallery> | ||
Image:Tek 121 front.jpg | |||
Image:Tek 121 bottom.jpg | |||
Image:Tek 121 left.jpg | |||
Image:Tek 121 right.jpg | |||
Image:Tek 121 top.jpg | |||
Image:Tek 121.jpg|Front view | Image:Tek 121.jpg|Front view | ||
Image:Tek-121-block.png|Block diagram | Image:Tek-121-block.png|Block diagram | ||
</gallery> | </gallery> | ||
Revision as of 13:27, 12 November 2011
The Tektronix 121 is a wideband preamplifier intended for 511 scopes. The voltage gain is 100, input impedance is 1 megohm in parallel with 25pF. The frequency response is 5Hz to 12 MHz. It has an unbalanced signal path with switchable compensated attenuators before and after the first gain stage, a 6CB6 common-cathode amplifier.
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Front view
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Block diagram
