Breadboard model is tuned to produce output pulses from one microsecond up to several seconds in width with up to 95 percent duty cycle, and with lower power consumption than previously existing circuits

Oneill, R. W.

English

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NASA TECH BRIEF 
.
I--) + - 
k o.------I	 1 
Qi
*1 
.	
R3 
April 1970
	
Brief 70-10305 
NASA Tech Briefs announce new technology derived from the U .S. space program. They are issued to encourage commercial 
application. Tech Briefs are available on a subscription basis from the Clearinghouse for Federal Scientific and Technical 
Information, Springfield, Virginia 22151. Requests for individual copies or questions relating to the Tech Brief program may 
be directed to the Technology Utilization Division, NASA, Code UT, Washington, D.C. 20546.
--
One-Shot Multivibrator with Complementary Metal-Oxide-Semiconductor 
Components 
The illustrated circuit represents a design improve-
ment in one-shot multivibrators. A breadboard model 
has been tuned to produce output pulses from one 
microsecond up to several seconds in width, with up 
to a 95% duty cycle, and with lower power consump-
tion than is possible with previously existing circuits. 
The input pulse is derived from Ql and R3, which 
represent a typical driver circuit. Cl and RI differen-
tiate the incoming pulse and D2 limits the signal 
amplitude, to protect Ni. The time constant, and 
hence the pulse width, is controlled by C2 and R2. 
Di feeds the input pulse to N2 and isolates the out-
put of Ni from the input. Ni and N2 are positive 
NOR gates constructed using complementary MOS 
devices.
Note: 
Requests for further information may be directed to: 
Technology Utilization Officer 
Manned Spacecraft Center, Code BM7 
Houston, Texas 77058 
Reference: B70-10305 
Patent status: 
Inquiries about obtaining rights for the commercial 
use of this invention may be made to NASA, Code 
GP, Washington, D.C. 20546. 
Source: Robert W. O'Neill of 
Lockheed Electronics Company 
under contract to

Manned Spacecraft Center 
(MSC-13492) 
Category 01 
This document was prepared under the sponsorship of the National 	 Government assumes any liability resulting from the use of the 
Aeronautics and Space Administration. Neither the United States	 information contained in this document, or warrants that such use 
Government nor any person acting on behalf of the United States 	 will be free from privately ownedrights.
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One-shot multivibrator with complementary metal-oxide-semiconductor components

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