Hewlett Packard 6200B Dual Range Variable D.C. Power Supply 0-20V 0-1.5A or 0-40V 0-0.75A

Hewlett Packard 6200B Dual Range Variable D.C. Power Supply 0-20V 0-1.5A or 0-40V 0-0.75A. Good condition. Vintage – Last version of the “Black Knob” models. Load tested. No manual or other accessories. Easy to use intuitive controls are perfect for educational/instructional use. Current limiting with crowbar circuit – makes this one difficult to destroy.