A digitally controlled device is provided to interface between a user of adjustable power unit and an adjustable power module, where the user provides an analog user input signal for adjusting the performance of the adjustable module using a user defined standard. The digitally controlled device provides the adjustable power module an analog input signal adapted to the standard used by the module. The digital controller device for controlling adjustable power module that comprises at least one a...

A digitally controlled bit synchronizer and method for converting a pulse code modulated input signal having a known IRIG code into a filtered NRZ-L formatted output signal in phase with a predetermined clock signal. The bit synchronizer and method utilize a four-pole filter element, peak detector and reset circuits for removing AC offset, a variable controlled oscillator for adjusting the phase of the clock, Miller, Bi-Phase, and NRZ decoders, and a microprocessor for digitally controlling thei...

An oscillator system includes a multivibrator; means responsive to the 0 and 1 output binary states of the multivibrator for charging and discharging, respectively, a volume chamber; and means responsive to the pressure in the chamber and to a pair of logic signals for periodically changing the output states of the multivibrator. The means responsive to the pressure include a plurality of isolators whose input ports are connected to the volume chamber, each of the isolators being biased with a d...

A method for encoding a polymer. The method comprises incorporating, into a polymer formed by polymerizing at least one bulk monomer, from 0.1 ppm to 1% each of at least two additional monomer residues.

A digitally controlled filter comprises an operational amplifier having selectable output circuits with predetermined time constants. A plug-in unit determines whether the filter will be a high-pass filter, a low-pass filter, or a band-pass filter. The time constants in the circuit are determined by the application of a digital word to a plurality of switching gates to connect into the circuit one or more impedance combinations having predetermined time constants.

To provide a digitally switchable current source, by means of which no dangerous current spikes are produced at the switching instants, two digitally controllable switching transistors (MNn1, MNn2) are arranged in series with at least two parallel-arranged transistors (MNn) which are controllable by means of an analog voltage, while one of the two switching transistors is switched with the relevant inverted control signal and each one of the two switching transistors (MNn1, MNn2) is arranged in ...

A recorder for recording digital information directly and without the need for digital to analog conversion. This is attained by means for driving a recording pen by clock pulses, means for counting the clock pulses and a coincidence circuit comparing the successive count outputs with the digital signal and producing a recording signal when coincidence is achieved whereupon said signal is fed to the recording pen.

A delay line has its output taps connectable through the base-emitter circuits of individual transistors and then through the output terminals of a standard one-of-sixteen multiplexer or decoder to a load. In response to a four bit digital control signal a selected one of the sixteen multiplexer output terminals is connected to the load while the other multiplexer output terminals have a relatively high voltage impressed thereon thereby back-biasing all transistors except the selected transistor...

An up-down integrator is connected by means of control logic to a preset counter in an up-integration period wherein the count set in the preset counter determines the full scale on the voltmeter. An input D.C. voltage signal having a magnitude proportional to an analog quantity measured by the voltmeter is supplied to the input of the integrator during the up-integration process. Upon the counter reaching the preset count of clock pulses supplied thereto, the control logic removes the input sig...

A digitally controlled attenuator adapted for use with radio frequency signals is disclosed. The digitally controlled attenuator includes a radio frequency bus having connected thereto, at proper points therealong, a number of coupling and switching networks, each one thereof including a different attenuating shunt element of a ladder network. Each switching element, in turn, is responsive to a different digital control signal. The coupling and switching networks are connected to the radio frequ...