SurfMan Schematic

The 74HC14 hex inverter ic originally specified for the SurfMan should not be used because it's absolute maximum supply rating is 7 volts. Other hex inverter ics may be used such as a CD / MC / HEF 40106 or a MC14584 ic that will work with power supply voltages well in excess of the 9 volts specified for the SurfMan.


SurfMan to hi-fi connection schematic.


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