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LEE Test Fixture Instructions - AN-60-021 Application Note MiniCircuits.com
(app note added 04/05/06) |
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Light Pollution Meter - LED brightness control circuit and a millimeter to
compare light levels to LED level. (added 6/07) |
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Light Receiver works from 1kHz to over 70mhz - This circuit uses one tiny
C-MOS inverter IC to form a modulated light receiver with a very fast response. It
is designed around a PIN photo diode that is packaged for use with plastic optical
fibers. It can be used as an optical fiber receiver. By using the open end of the
optical fiber it can "sniff" out any modulated light signals. ….(designed by David
A. Johnson) |
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Light Sensor Adapter for Oscilloscope - (electronic schematic / circuit added
4/02) |
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Lightening Detector - A VLF receiver tuned to 300 kHz designed to detect the
crackle of approaching lightning. A bright lamp flashes in synchrony with the
lightning bolts indicating the proximity and intensity of the storm. It has a
superior RF section with a single resonance near 300kHz and plenty of sensitivity.
The antenna is a telescopic antenna that extends to two or three feet....
(added 5/05) |
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Lightning Activated Camera Shutter Trigger - This circuit is used to trigger a
camera's electronic shutter circuit when a flash of lightning is present. This
circuit would also work for photographing fireworks displays or other events
involving flashes of light. (added 4/02) |
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Lightning Storm Detector - Reverse engineered schematic diagram of a mass
produced lightning detector. The RF signal from lightning is quite strong and
broad in spectrum so a tuned circuit is not required at the antenna input stage.
Too much sensitivity will cause false alarms in a simple receiver such as this
one. The circuit uses clever pulse timing and integration techniques ....(added
2/05) |
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Line Output/Flyback Transformer tester - This is a 'ringer'-type tester I (Bob
Barker) originally designed for in-circuit testing of Line Output (Flyback)
transformers in TVs and computer monitors. After a couple of technician-years of
evaluation in actual servicing situations, it's also proved to be helpful in
locating shorted diodes, capacitors and deflection yokes in horizontal deflection
stages. LOPT/FBT condition is shown on an 8 LED 'bargraph' display. (schematic
added 8/03) |
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Linear Resistance Meter - ….(electronic schematic added 08/08) |
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Linear wind power meter compensates for temperature - 11/13/08 EDN-Design
Ideas: , Using a free-spinning anemometer for wind speed and a
diode-connected transistor for temperature sensing, this meter measures the wind
power available for "green" power generation.....(design idea added 08/09) |
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Live-line Detector - Detects the presence of a live mains conductor.
Minimum parts counting. (electronic circuit added 06/07/08) |
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LM2675-5.0EVAL 1A Step-Down High-Efficiency SIMPLE Switcher Evaluation Board -
The LM2675-5.0EVAL evaluation board is a fully-assembled and tested surface-mount
regulator that provides a 5V±1.5% output at up to 1A, from an input of 8V to 40V.
The overall efficiency is typically as high as 90%. The operating temperature
range is 0°C to +85°C. (app note added 3/05) |