The thermostatted Box

Photo 2 thermo Box

The thermostatted box OPEN

The breadboards

Long-Tailed Pair (shown here) have been replaced with a 741 OPAMP differential amplifier see CIRCUITS

The interface board - Dr DAQ - very versatile

Whole system + Lid
LOGO2

 

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Instrument Design 

the heart of the matter

The AC Wheatstone Bridge

AC Bridge scheme

The Whole System

Thermo Box open
Circuit Boards
Dr DAQ

For a more conventional view of the bridge, see Electronic Circuits

The whole apparatus