Abstract: Satellite controller circuitry includes a connection (i.e. coaxial or single wire with ground), with a control unit receiving a data message and generating a response message as output, and transmitter circuitry transmitting the response message. The transmitter circuitry has a first transistor having a first conduction terminal coupled to the connection, a second conduction terminal coupled to ground, and a control terminal coupled to receive output from the control unit, a second transistor having a first conduction terminal coupled to the connection, a second conduction terminal coupled to ground, and a control terminal coupled to receive the output from the control unit. The first and second transistors are configured such that a second current flowing through the first conduction terminal of the second transistor is in a non-unity ratioed relationship, or in a unity ratioed relationship, with a first current flowing through the first conduction terminal of the first transistor.

Abstract: A capacitor discharge ignition (CDI) system is capable of generating intense continuous electrical discharge at a spark gap for a desired duration and may include a second controllable power switching circuit with its input terminal connected to an output terminal of a high voltage DC source device. An output terminal of the second controllable power switching circuit is connected to an input terminal of a first power switching circuit. The second controllable power switching circuit may also have a control terminal connected to an output of a controller. The first controllable power switching circuit may be used for discharging a discharge capacitor, and the second controllable power switching circuit may cause charging of the discharge capacitor. As such, an ignition current through an ignition coil of the system is enabled for any desired number of cycles during both the charge and discharge cycles of the discharge capacitor.

Abstract: A capacitor discharge ignition (CDI) system is capable of generating intense continuous electrical discharge at a spark gap for a desired duration and may include a second controllable power switching circuit with its input terminal connected to an output terminal of a high voltage DC source device. An output terminal of the second controllable power switching circuit is connected to an input terminal of a first power switching circuit. The second controllable power switching circuit may also have a control terminal connected to an output of a controller. The first controllable power switching circuit may be used for discharging a discharge capacitor, and the second controllable power switching circuit may cause charging of the discharge capacitor. As such, an ignition current through an ignition coil of the system is enabled for any desired number of cycles during both the charge and discharge cycles of the discharge capacitor.