Quote:
If you want the accessory powered in "Standby" mode only, invert the output then AND it with the inverted Ant. power output.
In this particular case, the high-impedence detector can be replaced with a couple of transistors (so other accessories don't see a high when they expect a low) and a pull-up resistor (high side connected to the power line). The second transistor can act as an inverter too, so the result is logical high in standby and logical low when the sled is unpowered, the Empeg is removed from the sled or the Empeg is on.
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