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Producing a Chain of Pulses With Definitely Selectable Amplitudes

IP.com Disclosure Number: IPCOM000094403D
Original Publication Date: 1966-Oct-01
Included in the Prior Art Database: 2005-Mar-06
Document File: 2 page(s) / 29K

Publishing Venue

IBM

Related People

von der Heyden, H: AUTHOR

Abstract

By the selective application of input pulses to its separate inputs, the circuit produces output pulses with defined amplitudes associated with the individual inputs. If the pulsing of the individual inputs is controlled by a timed program, a chain of pulses with an amplitude variation determined by such timed program is produced at the output.

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Producing a Chain of Pulses With Definitely Selectable Amplitudes

By the selective application of input pulses to its separate inputs, the circuit produces output pulses with defined amplitudes associated with the individual inputs. If the pulsing of the individual inputs is controlled by a timed program, a chain of pulses with an amplitude variation determined by such timed program is produced at the output.

As an example, transistor Tx with its resistance Re constitutes an Inverter for digital signals. Resistance R1, instead of being connected to a fixed potential, is connected to the potential prevailing at point A. The potential of point A, which is connected to a fixed operating potential through load resistance Ra, can be varied through a low-impedance resistor network. The latter consists of a number of resistors R1...Rn corresponding to the number of desired amplitude stages. Such resistors are adapted to the individual amplitude stages and connected to point A through respective transistor switches T1...Tn. By pulsing the individual transistor stages, the amplitude of the signals at the output is varied.

Also illustrated is an example of a chain of pulses at the output the amplitudes of which vary in correspondence with the control signals applied to inputs Ix, I1, and I2 and respectively operating the associated transistor switches.

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