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Analog Opto Isolator - (circuit / schematic added 2/03)
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Balanced Floating Output Stage Circuit - A great output topology
based on a design by George D Pontis (Circuit design added 08/08/08)
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Battery Isolator - This circuit uses a few p-channel power FETs
and a new IC from Linear Technology. It allows an alternator to charge
two different lead-acid batteries but isolates the individual battery loads,
so that loads on one battery do not draw power from the other battery. This
configuration is often used on recreational vehicles. It is rated at
28v and up to 50 amps. …. [Hobby Corner Circuit by Dave Johnson] |
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Battery powered amplifier has optical isolation - 6-Jun-96 Issue
of EDN When you interconnect scientific instruments, especially older
ones, you often need both gain and galvanic isolation for the analog
interface functions.... [Design Idea by W Stephen Woodward, Venable Hall,
University of North Carolina, Chapel Hill, NC] |
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Circuit compensates optocoupler temperature coefficient - 22-Nov-01 Issue of
EDN When using an optocoupler in a linear application, you should consider its
gain drift with temperature. Traditional single- and dual-transistor-output devices
have a notable gain drift with temperature. In recent years, some
temperature-compensated optocouplers have appeared. However, another option is to use
two optocouplers or a dual optocoupler with appropriate feedback to make the dri....
[Design Idea by J Michael Zias, Acme Electric Corp, Cuba, NY] |
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Circuit Protects Computer's Input - 05/26/94 Issue of EDN-Design
Ideas....The circuit in Fig 1 performs input protection, level translation, isolation,
and debouncing. The circuit allowed the output of a relay driver to connect to a
computer even though the relay driver delivered a voltage as high as 24V and the relay
driver had no ground connection. With the values in Fig 1 the low and high thresholds
at the circuit's.... [Design Idea by Ang Tzu Seng, Halliburton Drilling Systems,
Singapore] |
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Circuit Widens Octocoupler's Response to 1 MHz - 12/21/95 EDN-Design
Ideas.... EDN is migrating links. This link is not verified. Search the "title"
EDN for new link. |
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Cross coupled gates prevent push pull driver overlap - 15-May-08 Issue of
EDN Cross-coupled gates in the push-pull drive of a center-tapped transformer's
primary prevent overlap.... [Design Idea by Richard Rice, Oconomowoc, WI] |
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Drive High-Voltage Varactor Diodes From just 5V - 03/27/97 EDN-Design
Ideas.... How to connect two International Rectifier (El Segundo, CA]PVI1050s
photovoltaic-isolator ICs in series to provide a20-Volt tuning drive for the varactor
diode…. [Design Idea by Steve Hageman, Hewlett-Packard Co, Santa Rosa, CA] |
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Dual Amp For Use with Opto Compressor Project - PCB.ZIP containing schematic
and gerber files. (circuit added 08/08/08) |
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Dual JFET-992/993 PCB schematic - (electronic circuit added 08/08/08)
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Dual Mike Preamp power supply Gerber - (electronic circuit added 08/08/08)
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Dual Transformerless Class A Discrete Mike Preamp - Uses JMP-1 Modules
(Circuit design added 08/08/08) |
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Fully Isolated 50/60Hz Sync Generator - This circuit will produce a single
pulse at the zero voltage cross points of the power line voltage. An opto-coupler
provides a very safe 5KV isolation. (added 12/04) …. [Designed by David A.
Johnson] |
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Honeybee Counter - I designed a circuit similar to this one a long time ago
to help a beekeeper count the number of bees going into or out of a hive. The low
power circuit uses a slotted opto-sensor to detect the passing bees. The circuit
advances an electronic counting module whenever a honeybee passes through the sensor.
The device only counts the number of bees going through the sensor. A different
circuit would be needed to count the number of bees only going out or only coming into
the hive.... [Designed by David A. Johnson] |
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Improved optocoupler circuits reduce current draw, resist LED aging -
14-Dec-07 Issue of EDN With improved optocoupler circuits, you can enhance the
accuracy of zero-voltage sensing.... [Design Idea by Peter Demchenko, Vilnius,
Lithuania] |
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JFET Double Balanced Mike Preamp - Based on a design by Graeme Cohen AES
Preprint #2106 (Circuit design added 08/08/08) |
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JFET Mike Preamp using Jensen JE16 Input Transformer - (electronic circuit
added 08/08/08) |
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JFET992/3 Summing Amplifier Circuit - Summing buss and amplifier circuit
for an Audio Console design (Circuit design added 08/08/08) |
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Jitter Detector Input Part #1 of a 2 part schematic - (electronic
circuit added 08/08/08) |
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Jitter Detector Output Part #2 of a 2 part schematic - (electronic circuit
added 08/08/08) |
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Jitter Modulator - (electronic circuit added 08/08/08) |
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