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Opto-Isolator Coupler
Circuits, Page 2
Opto Isolators: #'s - J
K - O
P - Z
Last Updated on:
Monday, October 03, 2011 06:07 PM |
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Circuits Designed by Dave Johnson, P.E. : |
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Negative 0.5 Volt Supply
With the component values shown, this simple circuit will provide a negative 0.5
volts at about 2 milliamps. It is perfect for rail to rail op amp circuits,
where a true 0 volt output is needed.
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Links to electronic circuits, electronic schematics, designs for engineers,
hobbyists, students & inventors:
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Light powers isolation amplifier - 01/21/99 Issue of EDN
Self-powered isolation amplifiers, which need no external isolated power
supply, provide versatile and convenient interfaces in many applications
that require galvanic isolation of the signal source. Examples of such
applications include circuits that serve in industrial or medical
environments, in which isolation....Page includes several designs.
Scroll to find this one.... [Design Idea by Stephen Woodward, University of
North Carolina, Chapel Hill, NC] |
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Machine Power Loss Beeper - For some medical equipment it is
important for an operator when power is lost to the machine. The beeper is
powered from a 9v battery and requires the machine to have a power switch
with a third set of contacts. …. [Designed by David A. Johnson] |
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Mike Preamp Power Supply with Phantom Power - Uses a single 48 VAC
center-tapped transformer (Circuit design added 08/08/08) |
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NEC Single & Multi-Channel Optocouplers 3/20/03 - Application Note
California Eastern Laboratories Doc #956....[App Note] |
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Negative 0.5 Volt Supply - With the component values shown, this simple
circuit will provide a negative 0.5 volts at about 2 milliamps. It is perfect
for rail to rail op amp circuits, where a true 0 volt output is needed. …. [Designed
by David A. Johnson] |
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Novel circuit isolates temperature sensor from its host - 3-Aug-06 Issue of
EDN Temperature-to-period converter and transformer driver provide power and
signal isolation.... [Design Idea by Alfredo H Saab and Tamer Mogannam, Maxim
Integrated Products Inc, Sunnyvale, CA; Edited by Brad Thompson and Fran Granville] |
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Optical Interrupter Draws Microamps - This circuit is great for battery
powered systems that use slotted type optical interrupters. It draws only 10uA from a
3v battery which should allow up to 5 years of operation from a lithium battery. ….
[Designed by David A. Johnson] |
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Opto isolated 1-Wire bus - When building a 1-Wire MicroLAN, you can run into
some difficulties in the way of safety and realibilty. Reason is that the whole
network has a galvanic coupling…(added 07/07/07) |
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OptoCoupled Gate Detects Motor Operation - 02/02/98 EDN-Design Ideas....
[Design idea by Malcolm Watts, Wellington Polytechnic, Wellington, New Zealand] |
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Optocoupler extends high-side Current-sensorto 1 kV - 03/01/01 EDN-Design
Ideas EDN is migrating links. This link is not verified. Search the
"title" EDN for new link. |
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Optocoupler isolates Shift Registers - 01/20/00 EDN-Design Ideas EDN is
migrating links. This link is not verified. Search the "title" + "EDN" for new link.
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Optocoupler simplifies power-line monitoring - 10-Jan-02 Issue of EDN
The use of a linear optocoupler and a capacitor-based power supply yields a simple,
yet precise power-line-monitoring system. The circuit in Figure 1 converts the 110V-ac
power-line voltage to an ac output voltage centered at 2.5V, covering 0 to 5V. The
circuit isolates the output signal from the power line.... [Design Idea by Alfredo del
Rio and Ana Cao y Paz, University of Vigo, Spain] |
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Optocouplers - Find out more about optocouplers/optoisolators and their
uses…. [REUK - Renewable Energy UK website] |
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Optocouplers are handy for motor drive - 13-Jun-02 Issue of EDN Figure
1a shows a latching circuit based on an optocoupler, IC1. If the off switch remains
closed, pressing the on switch powers the LED in the optocoupler. Thus, the transistor
in IC1 turns on. You can now release the on switch, and the transistor remains on. You
must adapt the current-limiting resistor, R, to the power-supply voltage and the
optocoupler's characteristics.... [Design Idea by Jean-Bernard Guiot, DCS AG,
Allschwil, Switzerland] |
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Optoisolator Block Occupancy Detector - This page is about a block occupancy
detector that uses an optoisolator to electrically separate the track from the
detector output. Four variations of the detector are shown. [from Rob Paisley's Model
Train web site] |
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Optoisolators compute watts and volt amperes - 21-Feb-08 Issue of EDN
Relying on the dynamic conductance of optoisolators' junctions, simple optoisolator
bridges compute the watts and volt-amperes of an ac load.... [Design Idea by W Stephen
Woodward, Chapel Hill, NC] |
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Opto Isolators: #'s - J
K - O
P - Z |
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