Re: Device to simulate a dual rail power supply from a single DC source
I added a simple 'virtual ground' option thus giving a split supply to one of my old Farnell PSU's. These had three terminals on the front (one is never used and for constant current as I recall).
I used an opamp (741 I think) and pair of small complementary output transistors with simple current limiting for each. So the virtual ground gives a split rail to whatever the main supply is set at and with a 100ma limit per rail.
It has proved invaluable over the years.
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