Browse Prior Art Database

Multivibrator Starting Technique

IP.com Disclosure Number: IPCOM000092929D
Original Publication Date: 1967-Mar-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Baumann, DD: AUTHOR

Abstract

This is a circuit for starting a free-running multivibrator. The relatively slow rising output voltage of DC power supply 10, after it is turned on, generally fails to induce enough cross coupling voltage in multivibrator 12 to ensure regeneration. However, with circuit 14 across supply 10, no voltage appears across multivibrator 12 until the supply voltage rises to the breakdown potential of zener diode 16. As the supply voltage rises slightly higher, 0.1 volts in the case of a germanium transistor 18, the voltage across multivibrator 12 rapidly rises from zero to the supply voltage, shocking it into oscillation.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 100% of the total text.

Page 1 of 1

Multivibrator Starting Technique

This is a circuit for starting a free-running multivibrator. The relatively slow rising output voltage of DC power supply 10, after it is turned on, generally fails to induce enough cross coupling voltage in multivibrator 12 to ensure regeneration. However, with circuit 14 across supply 10, no voltage appears across multivibrator 12 until the supply voltage rises to the breakdown potential of zener diode 16. As the supply voltage rises slightly higher, 0.1 volts in the case of a germanium transistor 18, the voltage across multivibrator 12 rapidly rises from zero to the supply voltage, shocking it into oscillation.

1