The source is an unregulated swinging between 52VDC and 64VDC. The output needs an add-on module to regulate to 52VDC at 2 amp. Ideal would be a variable regulated output between 48VDC and 55VDC, but fixed at 52 would still do the job. If somebody has the circuit but no interest in making a working p.c.b. I would then seek an interested technician willing to make a working board for pay.