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The Tektronix 123 is a miniature preamplifier [[introduced in 1958]]. | The Tektronix 123 is a miniature preamplifier [[introduced in 1958]]. | ||
The gain is 100, input impedance is 10 megohms, and | The gain is 100, input impedance is 10 megohms, and output impedance is | ||
31 kilohms. The frequency response is from 3 Hz to 25 kHz. | 31 kilohms. The frequency response is from 3 Hz to 25 kHz. | ||
The 123 uses two [[CK512AX]] pentodes. | The 123 uses two [[CK512AX]] pentodes for amplification and is powered by | ||
batteries. | |||
[[List of manuals that are needed|Manual needed]]. | [[List of manuals that are needed|Manual needed]]. | ||
Revision as of 16:15, 30 December 2011
The Tektronix 123 is a miniature preamplifier introduced in 1958. The gain is 100, input impedance is 10 megohms, and output impedance is 31 kilohms. The frequency response is from 3 Hz to 25 kHz. The 123 uses two CK512AX pentodes for amplification and is powered by batteries.
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Description in 1958 Catalog
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Schematic
