I'm needing to use a Marki A-2050 amplifier, which uses +/- 5 Vdc. It states that the negative rail must be power on before or simultaneously with the positive rail.
Is there a (simple) circuit I can build that only allows the positive rail to be applied while the negative rail is powered?
I expect to use a bench supply, providing both +/-, but I'm worried that I'll accidentally turn a knob in the wrong way.
Otherwise, I'll probably buy a fixed bipolar power supply, and assume it turns on both positive and negative simultaneously.
Thanks