Check the listing for details. Bedini SSG Circuit. Condition: New. Listed at 25.31 USD. Bedini SSG CircuitHomebrew SSG circuit for building pulse motor For multipole motor this circuit can be combined with an additional one.IMPORTANT NOTICE: This listing sells the SSG circuit according to the spec with the component assembled. All units are tested on a small motor before shipment. As this unit is usually used on experimental system we can not provide any support if the system in which it should fit does not work. You are only buying some components assembled together on a convenient circuit board. A common problem is the transistor being faulty due to erroneous connection when experimenting. We recommend testing and replacing the transistor as necessary. Integrate a potentiometer for sweet spot adjustments. Four connections on screw terminal block for 1. Trigger coil 2. Power coil 3. Charging Battery 4. Primary Battery Technical Specifications: Transistor 2N3055 1 Kohm Potentiometer 68 ohm Resistor