Ultrasonic sweep-frequency generator, also known as sweep-frequency power supply, has been well-known in many Industrial electronic areas including measuring the response of filters, electrical components, amplifiers through a wide range of frequency bands. Since the 1990s, sweep-frequency generator circuits have been broadly used in ultrasonic cleaning industry.
Stacked piezo ceramics are also named PZT stacks, are kind of piezo components which are composed ceramic thin pieces with many ceramic layers and internal electrodes. By comparison with london crystals with single-layer, they possess various features including small scale, low voltage, high power, low heating consumption, large deformation and force, and very high displacement resolution, which is able to realize Nano-level control accuracy.
There are many metal bonding methods such as fusion bonding, pressure welding, brazing, etc. Piezo elements welding generally uses braze welding way. By heating solder with low melting point, make it flow and infiltrate into area between wire and piezo elements, and they are connected together after solidify. In general, bond wires on both positive and negative electrodes of piezo components, or separately bond on metal sheets and piezos. According to different requirements for large quantity and standardized piezo crystals, it can also be divided into manual bonding and automated welding by equipment.
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