DL4XX's Throbbatron

Andy's version uses a pair of obsolete Semikron SKM121AR power modules. These are rated at 200V, 130A, 700W and have an rds-on of 18milli-Ohms at 80A.
Farnell have the similar APT20M11JVR for £65 each! Or the slightly less powerful STE110NA20 at £35.

side view of amp module

end view of the amp

top view

whole amp including PSU

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