Pressure Transducer Bridge Monitor Circuit Using AD620

This is a circuit for a 3kOhms pressure transducer bridge that operates on a 5V single supply is shown in the figure below. This is the figure of the circuit;

In the circuit like this, bridge consumes only 1,7mA. The using of AD620 and a buffered voltage divider allows the signal to be conditioned for only 3.8mA of total supply current. Where small size and low power become more significant, the AD620 is suitable for higher resistance and pressure sensors powered at lower voltages.

Interfacing Pressure Transducer Circuit

This is a design circuit of 3 kΩ pressure transducer bridge circuit that is powered from 5 V. This circuit is based on the AD620 that is especially suitable for higher resistance pressure. Here’s the figure of the circuit; 

 

In such a circuit, the bridge consumes only 1.7 mA. Adding the AD620 and a buffered voltage divider allows the signal to be conditioned for only 3.8 mA of total supply current. Small size and low cost make the AD620 especially attractive for voltage output pressure transducers.

CMOS Piezo Transducer Buzzer Driver

Here’s figure shows a design circuit for CMOS piezo transducer buzzer circuit;

A CMOS gate and transistor buffer can be used as an effective driver for a piezoelectric or piezoceramic transducer. This circuit is powered by 5 VDC. You can change piezoelectric transducer sound changing R2 and C1 values. PIN A connected to +5V and PIN B connected to Q1 collector.

PARTS LIST
R1 1MΩ
R2 560kΩ
R3 18kΩ
R4 1kΩ
C1 1000pF
Q1 2N2222
ICa And ICb CD4011
S1 Single Pole Double Throw
Switch PIEZO Piezo Element