Circuit for providing a plurality of selectable sweep waveforms

Abstract

Abstract AN IMPROVED SWEEP CIRCUIT FOR AN OSCILLOSCOPE OR THE LIKE INCLUDES A PLURALITY OF SWEEP GENERATORS OPERATED BY A PLURALITY OF SELECTABLE GATING CIRCUITS. THE GATING CIRCUITS ARE BIASED SUCH THAT EACH GATING CIRCUIT, EXCEPT A SELECTED GATING CIRCUIT, CLAMPS A RESPECTIVE SWEEP GENERATOR IN A NONOPERATIVE CONDITION. A COMMON INPUT TRIGGER RECEIVING CIRCUIT NOT ONLY RECEIVES INPUT TRIGGERING SIGNALS, BUT ALSO FORMS A MULTIVIBRATOR WITH A SELECTED GATING CIRCUT. THIS MULTIVIBRATOR IS OPERATIVE FOR CAUSING THE SELECTED GATING CIRCUIT TO CLAMP ITS ASSICATED SWEEP GENERATOR IN A NONOPERATIVE CONDITION ONLY FOR THE DURATION OF AN OPERATING PERIOD OF THE MULTIVIBRATOR, CORRESPONDING TO THE HOLDOFF PERIOD DESIRED FOR THE SWEEP GENERATOR. IN THE MULTIVIBRATOR, THE SELECTED GATING CIRCUIT INCLUDES THE TIMING MEANS FOR DETERMINING A HOLDOFF TIMING PERIOD APPROPRIATE FOR THE ASSOCIATED SWEEP GENERATOR. AT THE CONCLUSION OF THE MULTIVIBRATOR''S OPERATING PERIOD, THE SELECTED GATING CIRCUIT CAUSES THE ASSOCIATED SWEEP GENERATOR TO INITIATE A SWEEP WAVEFORM. SELECTION OF A DESIRED SWEEP WAVEFORM AS WELL AS THE SELECTION OF AN APPROPRIATE HOLDOFF PERIOD MAY THUS BE ACCOMPLISHED BY MEANS OF SELECTING A PROPER GATING CIRCUIT.

Inventors

• 👤 John J Horn

Bibliographic Details