3A8: Difference between revisions
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==Internals == | ==Internals == | ||
The 3A8 contains | The 3A8 contains one vertical display amplifier and two operational amplifiers. | ||
The 3A8 display amplifier can accept inputs from the output of either operational amplifier or from an external input. The input can be AC or DC coupled and can be inverted if desired. It has several transistors plus three 9-pin miniature vacuum tubes: an [[8416]] and two [[6KV8]]s. | The 3A8 display amplifier can accept inputs from the output of either operational amplifier or from an external input. The input can be AC or DC coupled and can be inverted if desired. It has several transistors plus three 9-pin miniature vacuum tubes: an [[8416]] and two [[6KV8]]s. | ||
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The operational amplifiers have a gain bandwidth product ≥ 10 MHz and a DC open loop gain ≥ 10,000. Output voltage is ≥ ± 25 V. Output current is ≥ 7.5 mA (including feedback current.) Input and feedback resistances and capacitances are separately switch selectable to provide a variety of opamp functions. External components can be substituted by way of front panel banana sockets which also accept any of the following special purpose adapters: | The operational amplifiers have a gain bandwidth product ≥ 10 MHz and a DC open loop gain ≥ 10,000. Output voltage is ≥ ± 25 V. Output current is ≥ 7.5 mA (including feedback current.) Input and feedback resistances and capacitances are separately switch selectable to provide a variety of opamp functions. External components can be substituted by way of front panel banana sockets which also accept any of the following special purpose adapters: | ||
==Accessories== | |||
:[[013-0049-01]] Standard Shielded Cover (two supplied with each plugin) | |||
:[[013-0048-01]] Terminal Adapter Assembly (empty box for user chosen components) | |||
:[[013-081]] Compensating Adapter | |||
:[[013-068]] Gating Adapter | |||
:[[013-0086-00]] Leakage Current Adapter | |||
:[[013-0067-00]] Logarithmic Amplifier Adapter | |||
==Calibration Fixtures== | |||
:[[067-0507-00]] Grid Current Checker | |||
==Pictures== | ==Pictures== | ||