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[ driver tree · SSTC · driver board · schematic only, no board photographed ]

ampere's micro SSTC: one IRFP460 and a TC4420

one IRFP460 · TC4420 · NE555 interrupter on-sheet · 2022

A one-transistor SSTC, kept deliberately small and published in full. The driver is an NE555P free-running on two 10 kΩ trimmers, an antenna picking up the secondary through a pair of 1N60P germanium diodes and a 100 kΩ bleeder, and a single TC4420CPA gate driver into one IRFP460. There is no bridge, no gate-drive transformer and no interrupter board. An LM7812 feeds it, two 470 µF cans hold the rail up, and feedback and output come out on two-pin headers. Title block: “sstc”, rev 1.0, 19 November 2022, drawn by ampere under the company name “Ampere Jason”, released into the public domain on 立创EDA. It is small but complete and signed, the smallest fully documented driver on this tree.

Schematics and photos

Sources

This is the card from the driver tree, written from what the builder published. Send corrections through the forum.