Make an excitation amplifier for miniature MRI.

This is no problem if an RF linear amplifier circuit is used.
Let's build it right away.

The main passive components are shown below.

Build an input transformer; use a PCB and copper pipe to construct the bobbin.

The RF transformer is rewound and adjusted many times.

The components are mounted on the board in order from the smallest to the largest.

The RF transformer is rewound and adjusted many times.

IRFP510 is used as the amplifying element.

It has a heat sink on the back of the board.

Attempt to acquire a spin echo signal as a test of amplifier operation.

The spin-echo signal can be observed after the two pulses.👀

It is not perfect, but it performs satisfactorily.