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Building A Simplified SG

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Building Series 1, Version 7 of
What Is Now Simply Known




Series 1 Version 6, 2 Winding Mechanical SG CIRCUIT ASSEMBLY

Series 1 Version 8, 2 Winding Digital SG Digital CIRCUIT ASSEMBLY


It is of particular Note that neither the components' chart or the schematic above include an R7 between 555B's Pin 3 and the Transistor's Base (or Pin 1). The builder must here recognize that the Transistor Bedini uses for Switch #1 cannot handle more than 7 Volts at the Base. So R7 accommodates the maximum Voltage the Transistor's Base will accept if the Voltage to 555B is greater than 7 Volts.