Abstract: This application relates to the systems and methods for networking and control of lighting systems. In particular, this application relates to the addressing and control of light emitting diodes (LEDs) connected serially on a bus within a network of serially bussed LEDs. The approaches described in this application simplify and lower the cost of control by distributing the control functions between a serial bus controller and controllers associated with individual LEDs or LED circuits on the serial bus. Hardware intensive decoding of predefined addresses, or time consuming address processing and determining algorithms, are not employed. Instead, the addressing method disclosed both simplifies the system by reducing hardware requirements and improves the speed of the data packets and reduces packet latency moving down the serial bus.

Abstract: Distressed forms or sheets folded at progressive lengths are lifted from a first platform, processed as by a printer and then stacked on a second platform on the other side of the printer from the first platform. The platform is disposed on tubular supports and is constrained on such supports to become lowered in position by the weight of the distressed forms being stacked on it. A guide extends from the printer to direct the forms downwardly into a compartment which is defined by the platform and by walls extending from the tubular supports in spaced relationship to each other. A tray is disposed on the compartment on the platform and is configured to direct the sheets downwardly so that the forward ends of the forms will be stacked properly on the platform against the forward wall. An endless belt is disposed in the compartment at the forward end of the compartment and is provided with teeth at its outer periphery.

Abstract: A current-to-frequency converter in which a succession of small charge feedback pulses is selectively generated to null the input current. The feedback pulses are generated by applying voltage pulses of precisely controlled magnitude to a precision capacitor to produce pulses of precisely-determined charge content. These pulses are then applied to a charge-dividing circuit including a matched pair of bipolar transistors. The charge dividing circuit bypasses the bulk of the charge in each pulse, while applying only a minute fraction of each pulse as the feedback current. The charge division ratio is maintained constant by the circuit in spite of temperature fluctuations.

Abstract: A process for producing mass filters for use in mass spectrometers. Several electrodes having precisely shaped surfaces must be held in precisely determined positions with respect to each other. Insulators are placed into position on the surface of a mandrel and a layer of metal is deposited over the mandrel and insulators to form a composite unitary structure, including the electrodes. The deposited metal overlying the insulators is then removed, electrically isolating the electrodes.

Abstract: A process for producing mass filters for use in mass spectrometers. Several electrodes having precisely shaped surfaces must be held in precisely determined positions with respect to each other. Insulators are placed into position on the surface of a mandrel and a layer of metal is deposited over the mandrel and insulators to form a composite unitary structure, including the electrodes. The deposited metal overlying the insulators is then removed, electrically isolating the electrodes.

Abstract: Improved circuitry for increasing the sensitivity of an electron-capture ionization detector includes a closed-loop feedback circuit which varies the frequency of pulses which are applied to the detector. The circuit responds to greater concentrations of predetermined compounds such as gases by increasing the pulse repetition frequency and responds to lower concentrations by decreasing the pulse repetition frequency, always tending to keep the current flowing in the detector circuit near a constant preset value. The pulse frequency will then vary directly with the concentration of sampled compound in the detector, and simple frequency-to-voltage conversion devices can be used to signal such concentrations. .Iadd.