Electronic Circuits and electronic circuits, electronic schematics plus an extensive resource for hobbyists, inventors and engineers

DiscoverCircuits.com, has 40,000+ electronic circuits, cross-referenced
into 500+ categories.    We have searched the web to help you find quick design ideas.
We make every effort to link to original material posted by the designer. 
Please let us if you would like us to link to or post your design.

HOME Schematics Index Hobby Corner Dave's Circuits Electronic Resources Contact Info
Imagineering Ezine    Discover Solar Energy Dave Johnson & Associates Faraday Touch Switches

Latch Circuits
Latch Circuits:  #-C      D-O      P-Z
Last Updated on: Saturday, August 22, 2015 05:47 AM


Links to electronic circuits, electronic schematics, designs for engineers, hobbyists, students & inventors:

1-button lock provides high security -  03/04/99 EDN Design Idea (contains several designs, scroll to find this one)   The circuit in Figure 1 uses a Dallas Semiconductor DS1820 one-wire digital thermometer in a multipoint temperature-measurement system. The DS1820 sensor allows distributed temperature measurement and uses only one wire for both data communication and the power supply. You can easily connect the one-wire interface to a µC (in this example, a PIC16C63. . .  [by Michal Kobylecki and Wojda Wlodzimierz, MK Design, Warsaw, Poland]

Add Latch-Off Current Limit to Regulator -  03/30/00 EDN Design Idea   In many applications, forcing a high-current power supply to latch off if a sustained fault condition exists can minimize the likelihood of damage to the pc-board traces and the power devices in the supply. Pulse-width-modulation. . .  [by Craig Varga, Linear Technology Corp, Milpitas, CA]

AN763: Latch-Up Protection for MOSFET Drivers -  Application Note Published 5-Feb-03. . .  [Microchip]

AN-932: SEU & Latch Up Tolerant Advanced CMOS Technology -  Application Note. . .  [National Semiconductor]

AN-989:AN-989 Single Event Upset & Latchup Considerations for CMOS Devices Operated at 3.3 V -  Application Note. . .  [National Semiconductor]

Asynchronous Circuit Latches Safely -  04/28/94 EDN Design Idea   The circuit in Fig 1is a digital latch that is resettable only after the condition that set the latch clears. A set input (active low] permanently latches the output (active low]. A reset input (active high] resets the output to a. . .  [by Paul A Kemp, NASA Johnson Space Center, Houston, TX]

Automatic latch-off circuit saves batteries -  01/04/07  EDN Design Idea   Persistent latch prevents batteries from overdischarge. . .  [by Kieran O'Malley, On Semiconductor, West Kingston, RI]

Bipolars provide safe latch-off against opto failures -  12/07/00 EDN Design Idea   A typical SMPS (switch-mode power supply]uses a reference voltage and an optocoupler to regulate the output voltage. The optocoupler carries the isolated information from the secondary side to the primary nonisolated side and. . .  [by Christophe Basso, ON Semiconductor, Toulouse Cedex, France]

Bistable Latch -  This is set-reset latch: it is a 'personality module for 4QD-TEC transistorised relay system. However it is an R-S latch with a difference in that it can be set by a High or a Low signal (as appropriate) on either input. The latch can be forced eithr way, and stays that way until next changed. . . .  [Page's Author: Richard Torrens]

Bistable Switch -  This circuit shows how to implement a simple bistable (On/Off) switch. You can also do this with a Schmitt trigger gate or inverter. Just set R1 and R2 to bias  input to  center point of  Schmitt trigger’s hysteresis. . . .  [Designed by Andrew R. Morris]

Circuit Adds Latch-Off Current Limit to Regulator -  03/30/00 EDN Design Idea   In many applications, forcing a high-current power supply to latch off if a sustained fault condition exists can minimize the likelihood of damage to the pc-board traces and the power devices in the supply. Pulse-width-modulation. . .  [by Craig Varga, Linear Technology Corp, Milpitas, CA]

Circuit Latches Solenoids at a Distance -  10/14/00 EDN Design Idea   The circuit in Figure 1 controls low-cost, latching solenoid valves over long distances. For example, it can control one valve 1 km away using two wires and a 12V supply. The circuit provides 700 mA at 12V for the 20 msec necessary. . .  [by J Pelegri and D Ramirez, University of Valencia, Spain]

Circuits Drive Single-Coil Latching Relays -  11/13/08  EDN Design Idea   Five driver circuits operate single-coil latching relays. . .  [by Alfredo H Saab and Tina Alikahi, Maxim Integrated Products, Sunnyvale, CA]

CMOS Circuit Latches Relays -  11/18/10 EDN Design Idea   A driver circuit take pulses and sets relays. . .  [by JC Maillet, Gabriola Island, BC Canada]

Continuity Tester Latching -  Awesome tester!at least in the designers opinion!. . .  [Tony van Roon's circuit]


Latch Circuits:   #-C      D-O      P-Z


HOME Schematics Index Hobby Corner Dave's Circuits Electronic Resources Contact Info
Imagineering Ezine    Discover Solar Energy Dave Johnson & Associates Faraday Touch Switches


 About Us   |  Advertise on DiscoverCircuits.com   |   Report Broken Links  |    Link to DiscoverCircuits.com  |    Privacy Policy

Copyright  2002 - 2015 David A. Johnson & Associates.  All Rights reserved. 
 Linking is ALLOWED but COPYING any content or graphics to your web site is EXPRESSLY PROHIBITED.