Instruments For Testing Your Innovations
Ultrasonic amplifier is a lab equipment that amplifies voltage signal at high frequencies. Unlike audio frequencies which are between 20Hz and 20kHz, ultrasonic-
In addition to high current, piezo ultrasonic transducers require high voltage. Their required voltage is usually greater than 10V and up to 100V or higher. Most signal sources such as those function generator are less than 5V, but ultrasonic devices need higher voltage. Therefore a high-
Figure 1. High-
Figure 2 and Figure 3 show examples of high-
Figure 2. TS250-
Figure 3. TS200-
The TS200 and TS250 are high-
Figure 4. Parallel two TS250 ultrasonic transducer amplifiers doubles the output current.
Further read on ultrasonic amplifer design.
While the TS250 and the TS200 are designed to output high current in the range of 1.4A to 6A (See selection guide for output current and voltage). Higher current are often required for some experiments and testing applications. To obtain higher current, two or more TS200/TS250 ultrasonic power amplifiers may be connected in parallel as shown in Figure 4. Their total current is proportional to how many units connected in parallel. When connect ultrasonic transducer amplifiers in parallel, a small resistor in series is needed to isolated the driver amps from one other. It is recommended to use 0.3Ω to 1.0Ω series resistance. Use larger resistance for higher output voltage. Due to high current, the isolation resistors must be able handle the power dissipation.
Figure 5. TS250 ultrasonic driver amplifier frequency response.