Abstract: In one embodiment, an indication of a frequency of a PWM input signal is received, with the PWM input signal being generated for the purpose of controlling a drive circuit. In response to the indication of the frequency of the PWM input signal, one or more outputs for programming one or more programmable components of a bootstrap circuit are automatically and electronically generated. The bootstrap circuit provides a supply voltage for the drive circuit. In another embodiment, apparatus is provided with a bootstrap programming circuit to, in response to an indication of a frequency of a PWM input signal, the PWM input signal being generated for the purpose of controlling a drive circuit, generate one or more outputs for programming one or more programmable components of a bootstrap circuit that provides a supply voltage for the drive circuit.

Abstract: Alignment of an optical encoder with respect to a codewheel. An alignment jig is used to align the encoder with respect to the codewheel shaft by mating with the codewheel shaft and with reference features on the encoder, which may comprise pins or receiving means for pins. One or more of the pins may be tapered to speed assembly.