CMOS Piezo Transducer Buzzer Driver Circuit
A CMOS gate and transistor buffer can be used as an effective driver for a piezoelectric or piezoceramic transducer. This Piezo Driver Circuit use CD4011 CMOS chip with four NAND gates.
| 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 |
This CMOS oscillator circuit for driving piezo-electric elecments.
S1 switch configurations
1 = ENABLE
2 = INHIBIT
You can change piezoelectric transducer sound changing R2 and C1 values.
Piezo PIN A connected to +5V and PIN B connected to Q1 collector.
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