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EECS 344 Diffamp

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  • Multiturn trimmed to 250uA

    Multiturn trimmed to 250uA

  • Circuit while trimming current (junction soldered together after current set). White visible-crimp BNC is single-ended signal source to transformer (hidden by BNC connectors), other BNC connectors are differential output to Tektronix 7A22 diffamp.

    Circuit while trimming current (junction soldered together after current set). White visible-crimp BNC is single-ended signal source to transformer (hidden by BNC connectors), other BNC connectors are differential output to Tektronix 7A22 diffamp.

  • venerable Tek 7623a storage scope w/ 7a22

    venerable Tek 7623a storage scope w/ 7a22

  • Signal source & power supply. BNC's on tee are TTL trigger output, triggering the 7000-series scope as well as another scope for other probing, as there was significant trigger jitter on the circuit due to the low-level signals involved.

    Signal source & power supply. BNC's on tee are TTL trigger output, triggering the 7000-series scope as well as another scope for other probing, as there was significant trigger jitter on the circuit due to the low-level signals involved.

  • The key to 63dB CMRR -- the 0.01% Vishay laser-trimmed

    The key to 63dB CMRR -- the 0.01% Vishay laser-trimmed

  • Resulting differential gain.

    Resulting differential gain.

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