|
AN238: Tire Pressure Monitoring (TPM) System: Microchip Application
Note - Published 11-Oct-02 (added 2/06) |
|
AN695: Interfacing Pressure Sensors to Microchip's Analog Peripherals:
Microchip Application Note - Published 13-Apr-00 (added 2/06) |
|
Circuit adds programmability to sensor Amplifier: 03/21/02 EDN Design Ideas
/ (added 1/05) The pressure-sensor amplifier circuit of Figure 1 offers a
number of advantages over the traditional approach using the classic three-op-amp
instrumentation amplifier. The circuit can operate from a single supply and uses only
two op amps and 1% resistors. If the reference voltage, VREF, is 0V, the transducer
gain for the circuit isTo ensure equal gain for the two ground-referenced volt... ... |
|
Interfacing Pressure Sensors to Microchip's Analog Peripherals: Microchip
Application Note - Published 13-Apr-00 (added 2/06) |
|
Pressure Gauge Responds Linearly to Altitude: 03/03/94 EDN-Design Ideas /
(Electronic Circuit diagram added 03/03) You can use a common pressure transducer as
an altimeter if you employ a special technique to make the transducer respond
linearly. If you were to simply amplify the output of a pressure gauge's bridge (VB in
Fig 1) by a gain of 32.7 and an offset of 3.2V, such a circuit would produce an output
of 0V at sea level and 1V at 10,000 ft. However, this simple design would read 38.5 mV
(385 ft), which is too high at 5000 ft. The nonlinear relationship between atmospheric
pressure and altitude causes the error, which peaks at 3.85% of full scale.... |
|
Pressure Sensor-Based Altimeter Circuit: (Electronic circuit added 4/05) |
|
Tire Pressure Monitoring (TPM) System: Microchip Application Note -
Published 11-Oct-02 (added 2/06) |
|
Use RS232C Port to Measure Pressure: 08/01/97 EDN Design Ideas /
(added 8/03) A simple circuit and accompanying software turn a pressure sensor
into an accurate and cheap pressure digitizer that works with any PC's RS-232C COM
port. Many manufacturers make micromachined silicon piezoresistive pressure sensors. |
| |
