Opa549

Manufactured by Texas Instruments

Sourced in United States

The OPA549 is a high-power operational amplifier (op-amp) from Texas Instruments. It is designed to provide high output current capability for a variety of industrial and power management applications. The OPA549 features a wide supply voltage range, high output current, and a robust thermal management system. It is well-suited for use in power amplifiers, motor controls, and other high-current circuits.

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Lab products found in correlation

Afg3022c, by Tektronix (1 mentions)

2 protocols using opa549

Pulsed EPR Spectrometer/Imager Development

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Fig. 1 shows a block diagram of the RS and pulsed EPR spectrometer/imager that has been developed. A permanent magnet (MR-PMAG05, Sumitomo Special Metals Co., Ltd, Japan) was used for testing of the RS-EPR digital console at 1.2 GHz. The static field strength of the magnet is about 43 mT at room temperature. The magnetic field can be varied using additional coils installed on the magnet. The coils are driven by a current source constructed locally using an op-amp IC (OPA549, Texas Instruments, Inc., USA) supplied with ±24 V. The sinusoidal scanning magnetic field required for RS experiments was generated by a Helmholtz pair of coils (radius 70 mm, inductance 2.28 mH, coil constant 0.65 mT/A). The coils were resonated using a bank of capacitors. Scans with a maximum width of 3 mT at 15 kHz and 33 kHz were generated by the operational amplifier that uses ±28 V power supplies. This voltage defines the maximum scan width.

Sato-Akaba H, & Tseytlin M. (2019). Development of an L-band rapid scan EPR digital console. Journal of magnetic resonance (San Diego, Calif. : 1997), 304, 42-52.

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Magnetic Actuation and Motion Capture

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Two blocky magnets were placed opposite to each other with a distance of 50 mm using a 3D-printed fixture. Then the composite modules V | | H and H | | H were hung in the center of the magnetic field with un-stretchable thin thread for excluding the effects of gravity and friction, respectively. Two current signals were applied on the modules V and H or H and H to control their motions during the qualitative validating experiments of self-vectoring control for SESRs. To quantitatively characterize the relationship between the rotation angle and the control signal (waveform, inflation rate, current amplitude and frequency), the whole setup can be divided into three parts: electronic system, robotics system, motion capture system (Supplementary Fig. 21). In the electronic system, DC power sources (UTP1310, maximum 320 W, UNI-T, Guangdong, China) output constant current (I, 0~2 A); A signal generator (AFG3022C, Tektronix, Oregon, United States) provides variable frequency (f, 0.5~30 Hz); A control circuit (OPA549, ± 8 A, Texas Instruments, Texas, United States) allows the current to reverse as the waveform. The motion capture system was the same high definition camera.

Li W., Chen H., Yi Z., Fang F., Guo X., Wu Z., Gao Q., Shao L., Xu J., Meng G, & Zhang W. (2023). Self-vectoring electromagnetic soft robots with high operational dimensionality. Nature Communications, 14, 182.

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