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Anemometer Circuit - A totally Electronic circuit to measure Air
FlowZero to 250 feet per Minute. Thats only 2.84 MPHBut it can be
Modified for other Rates of Air Flow(schematic / circuit added 10/06)
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Homemade Easter Egg Anemometer - In any wind generator
installation, it's critical to be able to measure wind speed. That gives you
a baseline against which to measure your machine's performance, and
anemometers respond much more quickly to changes in windspeed than do wind
generators. Commercial anemometers.... [from OtherPower.com's website] |
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Low-cost anemometer fights dust - 30-Aug-01 Issue of EDN As
higher levels of power dissipation underscore the need for cooling,andfans
are finding their way into small electronic enclosures. The dust that fans
pull into these enclosures can, however, cause major problems for
high-reliability systems. By coating heat sinks and electrically charged
components, the dust acts as a blanket that raises the effective thermal
impedance betw.... [Design Idea by Jim Christensen, Maxim Integrated
Products, Sunnyvale, CA] |
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Self Heated Transistor Digitizes AirfLow - 03/14/96 EDN-Design
Ideas.... EDN is migrating links. This link is not verified. Search
the "title" + "EDN" for new link. |
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Transistor & FVCs Make Linear Anemometer - 09/26/96 EDN-Design Ideas....The
basic operation of this front-end sensor is identical to that of the earlier circuit.
Q1 is the self-heated airflow sensor; Q2 senses ambient temperature. Zero-adjust
resistor R2 sets the zero-airflow quiescent bias currents for Q1 and Q2. With proper
adjustment of R2, the temperature rise of Q1 from its collector power.... EDN is
migrating links. This link is not verified. Google the "title" EDN for new link.
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Connect two buttons with just two wires - 17-Sep-09 Issue of EDN Use
diodes to steer current in the right direction.... [Design Idea by Fikret Yilmaz,
Mobil Elektronik, Istanbul, Turkey] |
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Convert Thermostat to 12v Timer Switch - Find out how to modify a battery
powered thermostat to be used as a 12 Volt DC timer switch…. [REUK - Renewable Energy
UK website] |
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DAS1 10A/12V Dark Activated Switch - The DAS1 is a combination manual switch
and automatic dark-activated switch. It is designed to control up to 10 amps of 12V
lights. A pair of high-intensity white LEDs are included in the circuit for built-in
lighting. The circuit includes a low voltage disconnect circuit that prevents
excessive battery discharge on battery operated systems.... [G. Forrest Cook] |
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Economical On/Off Power Switch - ….must register on this site.... [Published
in Elecktor July/August 2010] |
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Float Switch Water Level Measurement - Find out how to use float switches in
renewable energy applications…. [REUK - Renewable Energy UK website] |
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LED Out Circuits For Tortoise Switch Machines - Circuit for model railroad
trains…. [from Rob Paisley's Model Train web site] |
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N.O. Magnetic Reed Switch ON /OFF Circuit - The following is a simple timed
DC throttle that has controls for the length of run, accelerate/ decelerate and the
maximum train speed. The circuit also has automatic current limiting....Circuit for
model railroad trains…. [from Rob Paisley's Model Train web site] |
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N.O. Magnetic Reed Switch ON /OFF Circuit (SCR Equivalent) - Circuit for
model railroad trains…. [from Rob Paisley's Model Train web site] |
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Nonvolatile standby/on switch remembers its state - 3-Sep-09 Issue of EDN
Remember your circuit's state when the power goes out.... [Design Idea by Anatoly
Andrusevich, Maxim Integrated Products Inc, Moscow] |
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On/Off Power Switch - ….must register on this site.... [Published in
Elecktor July/August 2010] |
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Reed Switches - Find out more about reed switches and their uses in RE…. [REUK
- Renewable Energy UK website] |
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Sun Type 5 keyboard on the PC - Many people have dreamed of having their Sun
Type 5 keyboard attached to their PC. Now with this adapter, it is finally possible.
Because the standard Sun keyboards use TTL RS232 at 1200 bps to talk to the Suns, it's
relatively easy to make them talk to any non-Sun computer by converting this to true
RS232. However PC's don't understand keyboards hooked up to serial ports without
special drivers. While such drivers do exist you will still need to keep a PC keyboard
about if you want to change the BIOS setup etc.... [Jonathan A. Buzzard] |
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Switch from Inverter to Mains Automatically - Power a circuit directly from
a power inverter, but with automatic mains power back up…. [REUK - Renewable Energy UK
website] |
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Switch Mains Powered Appliances Safely - Find out how to safely control
mains-powered devices automatically without needing an electrician…. [REUK - Renewable
Energy UK website] |
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Timed DC Throttle - The following is a simple timed DC throttle that has
controls for the length of run, accelerate/ decelerate and the maximum train speed.
The circuit also has automatic current limiting....Circuit for model railroad trains….
[from Rob Paisley's Model Train web site] |
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