Mutual magnetic coupling between coils was measured by placing pork skin on top of the Maxwell-Wien bridge circuit
. The skin consisted of 2 mm of skin and fat.
Diaphragm movement triggers the Wheatstone bridge circuit
by generating varying values of strain in the piezoresistive pads.
Kreuzer, "Wheatstone bridge circuits
shows almost no nonlinearity and sensitivity errors when used for single strain gage measurements", Technical literature of Hottinger Baldwin Messtechnik, [Online].
Each strain gauge is then wired into a balanced bridge, consisting of two portions of an equal resistive value, formed into a Wheatstone bridge circuit
. (HBM also constructs gauges with 1/4- and 1/5-bridge designs that require a fixed resistor to complete the Wheatstone bridge.) Regardless of bridge configuration, energy must be passed through the gauge to excite the circuit.
The convertible SWR autotester's RF bridge circuit
is then internally compensated, as shown in Figure 2, to negate the reflection caused by the bead.
Synthesis of quasi-balanced circuits can also be conducted based on an analysis of the known bridge circuits
However, as more and better electronic components became available, a true bridge circuit
became less necessary, especially at low frequencies.
A system of this configuration works similarly to a Wheatstone bridge circuit
with a current supply .
The Wheatstone bridge circuit
is widely used to convert the gage's microstrain into a voltage change that can be fed to the input of the ADC.
As a document on the Mezzanines International Web site (www.groupipc.com) notes, the concurrent use of six PCI-based modules may require a PCI bridge circuit
on the carrier board.
If the sensors are situated in all arms of the bridge circuit
and their nominal resistances are equal ([R.sub.10]) and their resistance changes are small (thus [[epsilon].sub.i][[epsilon].sub.j] [much less than] [[epsilon].sub.i] +[[epsilon].sub.j] and [SIGMA][R.sub.i0][[epsilon].sub.i] [much less than] [SIGMA][R.sub.i0]), the simplified version of the equations can be provided as follows: