121: Difference between revisions
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The frequency response is 5Hz to 12 MHz. It has an unbalanced signal path with | 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]] | switchable compensated attenuators before and after the first gain stage, a [[6CB6]] | ||
common-cathode amplifier. | common-cathode amplifier. The [[1121]] can be considered the successor to the 121. | ||
* [http://bama.edebris.com/download/tek/121/tek%20121.pdf Tektronix 121 Manual (incomplete, PDF)] | * [http://bama.edebris.com/download/tek/121/tek%20121.pdf Tektronix 121 Manual (incomplete, PDF)] |
Revision as of 14:11, 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. The 1121 can be considered the successor to the 121.
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Block diagram