An ultrasonic frequency amplifier is a laboratory equipment which amplifies a voltage signal at high frequencies. Unlike any audio frequencies that are from 20Hz to 20kHz, ultrasonic frequency is higher than 20kHz, as well as into the hundreds of kilo-Hertz and possibly MHz. Typical ultrasonic amplifier applications include piezo transducer and sensor. An ultrasound transducer and sensor generally is capacitive. At higher frequencies, the transducers impedance is low. They’ll require a high-current amplifier in order to drive the transducers at those supersonic frequencies.
Besides high current, a piezo ultrasonic transducer requires high voltage. Usually, their required voltage is higher than 10V, up to 100V or greater. Many signal sources like function generators are under 5V, yet ultrasonic devices require higher voltage. Thereby high-voltage ultrasonic power amplifiers are required. For instance, a piezoelectric speaker requires an 50Vpp sine-wave; however, signal generator outputs are 5V maximum. Utilizing the TS250 in order to amplify the signal source, it’ll output a high current and high voltage ultrasonic waveform which drives a piezo speaker. In conclusion, the TS250 is the perfect ultrasonic amplifier driver.
Choosing Ultrasonic Power Amplifiers
The TS250 and TS200 include high current amplifiers, as well as high voltage ultrasonic amplifiers. Unlike additional ultrasonic piezo amplifiers out there these days, the TS250 and TS200 have the ability to output extremely high current at a supersonic frequency.
TS250-0’s may drive 6A peak currents to piezoelectric devices as loads. If the high frequency device needs greater current, two or more TS250’s may be linked in parallel.
More than one ultrasonic transducer amplifiers may be linked in parallel utilizing isolation resistors.
While the TS200 and TS250 are made to output higher current within the range of 1.4A – 6A. Oftentimes, higher currents are needed for some testing applications and experiments. To get higher current, more than one TS250/TS200 ultrasonic power amplifiers might be linked in parallel. Their overall current is proportional to how many units are linked in parallel. As you link ultrasonic transducer amplifiers in parallel, small resistors in series is required to isolated driver amps from each other. It’s suggested that you use 0.3Ω – 1.0Ω series resistance. Utilize more resistance for higher-output voltage. Because of high current, isolation resistors have to have the ability to deal with the power dissipation.
