Stirling Engine Refrigerator—-Failed 1st attempt

Here I try to turn my Simple Free Piston Stirling engine into a refrigerator heat pump by driving it backward with an electromagnet and an oscillator circuit. It didn’t work.

Here is a link to a homemade Beta Stirling made by Approtechie that is being run as a refrigeration unit. It is non-pressurized and uses only air as the gas. This is what I am going after.

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