While transducer is the more technically correct term, for purposes of plastic and metal welding machines, converter is possibly the more common term, and is completely synonymous in this context.

The sandwich-style ultrasonic transducer, or converter, was developed by Paul Langevin in 1917. Langevin’s transducer used quartz elements, the most efficient piezoelectric material known at the time, but it would be immediately recognizable as a high power transducer even today.

In electrical engineering terms, a transducer is a device that converts energy from one form to another, usually one of them being electrical energy. A transducer can be used to change motion, force, or pressure into electical energy, or, as in the case of high-power ultrasonic transducers, electrical energy into motion, force, or pressure. It is common to construct such devices of wire coils wrapped around a magnetostrictive core, or to pass electric current directly through stacks of piezoelectric material, as Langevin did.

Because these devices convert energy from one form to another, a synonymous term, converter, has come into common use. The name of the device is of little consequence, and quite often nearly identical devices made by competing companies will bear different names.

The high-power ultrasonic converters shown below are of the Langevin sandwich type. The active elements are piezoelectric. In this case, a precisely made ceramic material called lead zirconate titanate (PZT).

The PZT material is formed into discs, each having a center hole. The discs are polarized such that electric current flowing from one flat face to the other in one direction causes the discs to get slightly thicker, and current flow the opposite direction causes the discs to get slightly thinner. By stacking these discs with electrodes between the faces and clamping them between two bodies of resonant metal using a central bolt which passes through the holes in the PZT discs, a converter capable of converting electrical signals into a resonant mechanical motion of considerable power is created. PZT transducers are relatively efficient at this conversion, resulting in less energy being lost as waste heat, while magnetostrictive transducers are capable of higher overall power output levels, depsite being less efficient.

When coupled with tuned components such as boosters and sonotrodes (horns), the energy can be transmitted to thermoplastic work pieces to be welded, or to materials that require this unique form of energy to undergo some chemical or physical change..

布兰森更换转换器

AM44C20
Branson CJ-20 Converter Replacement
Aftermarket replacement for the Branson CJ-20 converter (101-135-059) used in all 20KHz 2000, 2000X and DCX series IW, actuator and assembly stand systems that delivers rugged quality and superior value.  All-new, precision made in USA (ask Branson where they make theirs) in a climate-controlled ISO-registered facility. Three year limited warranty.
not rated $1,385.00 Add to cart
AM10902
Branson 902J Converter Replacement
Replacement converter for Branson model 902J (101-135-047), for use with 910IW or IW+ intergrated benchtop welders or 905 or 910 D/M (500 and 1000 watt) power supplies using actuator or assembly stand units. All-new, precision made in USA (ask Branson where they make theirs) in a climate-controlled ISO-registered facility.  Three year limited warranty.
not rated $1,060.00 Add to cart
AM20922
Branson 922JA Converter Replacement
Replacement converter for Branson model 922JA (101-135-049), for use with 920IW or IW+ model integrated benchtop welders or 920 D/M (2000 watt) power supplies using actuator or assembly stand. All-new, precision made in USA (ask Branson where they make theirs) in a climate-controlled ISO-registered facility.  Three year limited warranty.
not rated $1,260.00 Add to cart
Branson CR-20 Converter Replacement
Aftermarket replacement converter for Branson model CR-20 using the military-style connector, for use with 20KHz 2000, 2000X and DCX series power supplies. Precision made in USA (ask Branson where they make theirs) in a climate-controlled ISO-registered facility.  Three year limited warranty.
not rated $1,710.00 Add to cart
Branson CR-20S Converter Replacement
This aftermarket replacement converter replaces machinery-mounted probe converter CR-20S (125-135-115R), which has a SHV jack used with coax cable to 20KHz 2000, 2000X, and DCX series power supplies.  Three-year limited warranty.  All-new precision made in the USA (ask Branson where they make theirs) in a climate-controlled ISO-registered facility.
not rated $1,810.00 Add to cart
Branson CH-20S Converter Replacement
This aftermarket replacement converter replaces sealed machinery-mounted probe converter CH-20S (159-135-075R), which has a SHV jack used with coax cable to 20KHz 2000, 2000X, and DCX series power supplies.  Three-year limited warranty.  All-new precision made in the USA (ask Branson where they make theirs) in a climate-controlled ISO-registered facility.
not rated $1,890.00 Add to cart
Branson CR-20C Converter Replacement
This aftermarket replacement converter replaces machinery-mounted probe converter CR-20C (125-135-210R), which has a one meter cable and SHV jack used with 20KHz 2000, 2000X, and DCX series power supplies.  Three-year limited warranty.  All-new precision made in the USA (ask Branson where they make theirs) in a climate-controlled ISO-registered facility.
not rated $1,955.00 Add to cart
Branson CH-20C Converter Replacement
This aftermarket replacement converter replaces sealed machinery-mounted probe converter CH-20C (159-135-211R), which has a one meter coax cable and SHV jack used with 20KHz 2000, 2000X, and DCX series power supplies.  Three-year limited warranty.  All-new precision made in the USA (ask Branson where they make theirs) in a climate-controlled ISO-registered facility.
not rated $2,035.00 Add to cart
AM10902R
Branson 902R Converter Replacement
Aftermarket replacement converter for Branson model 902R using the military-style connector, for use with 20KHz 905 and 910 power supplies. Precision made in USA (ask Branson where they make theirs) in a climate-controlled ISO-registered facility.  Three year limited warranty.
not rated $1,385.00 Add to cart
Branson 922RA Converter Replacement
This aftermarket replacement converter replaces machinery-mounted probe converter 922RA which has a military-style connector for use with  20KHz 920 series power supplies.  Three-year limited warranty.  All-new precision made in the USA (ask Branson where they make theirs) in a climate-controlled ISO-registered facility.
not rated $1,585.00 Add to cart