Thermionic converter (current source).

grabcad

Approximately three decades ago, I encountered this subject matter in the Soviet Union. The manufacturing of garland components, utilizing a thermionic converter, was an incredibly complex and costly process. To create metal-ceramic packages, substantial equipment was necessary. Various techniques were employed, such as plasma spraying and electron beam welding, coupled with gasostatic pressing. Reflecting on this period, there are sentimental feelings, dreams, and a touch of delirium. A wild notion emerged: 3D printing. The idea involved assembling the ten elements in series, functioning as the fuel components within a nuclear reactor. However, these designs would require input from NASA. Fortunately, Uranus won't need to be printed (it will be handled by another company).