The heart of all piezoelectric sound generators is a simple piezoceramic disk that is coated with a layer of silver and glued together with a metal carrier plate. When the plate is driven by an external resonant circuit, the piezo tone generator is called a piezoelectric transducer. When the disk is driven by a built-in oscillating circuit, it is a piezoelectric buzzer.
The advantage of these simple structured acoustic components is their robustness and cost-effective sound solution.
Piezo sound generators are the ideal choice for applications that require a simple sound signal in a small frequency range, e.g. warning and control sound signals from household appliances, medical and health care products. The size range of piezo sound generators goes from the miniaturized size of 9 mm × 9 mm × 1.8 mm up to ø of 60 mm and covers tones in a range from low soft sound to aggressively loud sound. The design of almost all piezoelectric sound generators is adjusted to meet the most popular frequencies in the range between 2000 Hz and 5000 Hz.
Operating temperature range is from – 40 ° C to + 120 ° C. Standard voltage range is between 3 V and 12 V, in special cases according to customer requirements, higher voltages are possible. Piezo sound generators give with pins, wires or SMD pads.
Karl Kruse offers a wide range of Transducers, such as:
- Magnetic Transducer
- External Drive Piezo Transducer
- Self Drive Piezo Transducer