Abstract: A configurable power supply system that includes batteries, isolated bi-directional DC-DC converters, and contactors. Each battery has an isolated bi-directional DC-DC converter and contactors that are controlled in a sequence to pre-charge a DC-link capacitor and balance voltages of the batteries.

Abstract: Resonant recharge for synchronous pulsed laser operation. At least one example embodiment is a method of activating a laser diode, the method including: creating an oscillating voltage at a node between an inductor and a first capacitor, the oscillating voltage having a positive half-cycle and a negative half-cycle; charging a firing capacitor during a positive half-cycle of the oscillating voltage, the charging from the node and through a diode; and driving, during a negative half-cycle of the oscillating voltage, a pulse of current from the firing capacitance through a laser diode.

Abstract: A vehicle power system may include a plurality of series connected power storage units configured to supply power to move a vehicle, and at least one flyback switch mode converter having a plurality of primary windings and a single secondary winding. Each of the primary windings may be configured to be selectively electrically connected with a respective one of a set of the power storage units. The secondary winding may be electrically connected with a different set of the power storage units.

Abstract: A carrier-based signal is received from a tuner and is digitized to produce a digital intermediate frequency (IF) signal. Automatic gain control is applied to the carrier-based signal either prior to or after digitization. An adaptive intermediate frequency bandwidth control system detects IF signal level after channel filtering. The level is compared to a predetermined threshold having a value related to the known signal level of the AGC'ed signal which is being input to the channel filter in order to provide a measure of either 1) the presence of interfering adjacent channels, or 2) reception or a weak signal which can't be compensated for by AGC. The IF bandwidth is narrowed in either circumstance. Digital FIR or IIR filtering is used. The invention allows bandwidth switching to be done very quickly with minimal transient effects. A threshold value is selected depending upon the IF channel bandwidth being used at any given time.

Abstract: An adaptive intermediate frequency bandwidth control system detects IF signal levels both before and after channel filtering. The two levels are compared to provide a measure of the presence of interfering adjacent channels. This measure is compared to a programmable threshold and the IF bandwidth is narrowed if any interferers are detected. Digital FIR or IIR filtering is used. The invention allows bandwidth switching to be done very quickly with minimal transient effects. A difference threshold is selected depending upon the IF channel bandwidth being used at any given time.