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Pulse train Generator

IP.com Disclosure Number: IPCOM000098562D
Original Publication Date: 1959-Feb-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 29K

Publishing Venue

IBM

Related People

Saxild, OL: AUTHOR

Abstract

To derive a serial pulse train with every Nth pulse missing, an input pulse train is applied to a negative logic AND circuit directly and indirectly. The indirect input to the AND circuit is normally held at a low, voltage level by a cathode follower in the absence of a pulse from a blocking single shot oscillator. The input pulse train, being applied directly to the AND circuit, passes to the output terminal.

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Pulse train Generator

To derive a serial pulse train with every Nth pulse missing, an input pulse train is applied to a negative logic AND circuit directly and indirectly. The indirect input to the AND circuit is normally held at a low, voltage level by a cathode follower in the absence of a pulse from a blocking single shot oscillator. The input pulse train, being applied directly to the AND circuit, passes to the output terminal.

The indirect path comprises an inverter and an amplifier for applying the input pulse to a staircase generator for the purpose of integrating the pulses to a voltage level which fires a thyratron single shot generator. The voltage magnitude, at which the thyratron single shot generator fires, is determined by the particular pulse within the input pulse train, which it is desired to blank out. After the thyratron single shot generator fires, the staircase generator output returns to its initial voltage level. In addition, a delay single-shot generator connected to the output of the thyratron applies an inverted pulse to differentiating circuit. The differentiating circuit then triggers a blocking single- shot generator for the purpose of temporarily changing the output voltage level at the output of the cathode follower, providing the indirect input to the AND circuit. The AND circuit is then closed and the pulse train does not pass through it. The width of the pulse output of the blocking single-shot generator is selected so that one o...