Ird Mechanalysis, Inc.

Lloyd D Penn

Robert S Morrow

A combination electronic device provides a digital sweep circuit adapted to generate a sweep signal which increases in frequency at constant intervals over a selected range of frequencies and over a selected period of time.

Digital sweep circuit for generating sawtooth wave form

Circuitry for generating a sine wave and/or a cosine wave from a pulse signal wherein cyclically repeating pulses each generate one cycle of a sine wave and/or a cosine wave. Each pulse institutes a sawtooth signal; a square wave generator produces a square wave having a positive excursion for one-half of the sawtooth signal and a negative excursion for the other half of the sawtooth signal. The square wave signal is integrated to produce a triangular wave. The triangular wave may be shaped into a simulated harmonic wave by wave-shaping circuitry. If both sine and cosine waves are desired, additional circuitry is employed to convert the described square wave to another square wave of the same frequency, 90.degree. out of phase with the first square wave. The other square wave is converted to a corresponding triangular wave which is shaped to a simulated harmonic wave by wave-shaping circuitry. Additional circuitry may be provided to compare the two square wave signals to assure that the resulting harmonic waves are in the desired phase relationship, i.e., a leading or lagging relationship as desired.

Circuitry for generating a sine wave and/or cosine wave from a pulse

A pulse signal conditioning circuit. Repetitive pulse signals can be sharpened and freed of accompanying, unwanted noise manifestations by means of a network of steering diodes and constant current diodes feeding a comparator circuit producing sharp, uniform pulses.

Pulse signal conditioning circuit

A combination electronic device provides balance analyzing capabilities, narrow band and wide band spectrum analysis capabilities, automatic tracking filtering capabilities, precision dynamic balancing with remote phase presentation, and tracking filtering. The device presents multiple functions including:

Growing community of inventors

Johnstown, OH, United States of America

Lloyd D Penn