Linear Hall-effect ICs are magnetic sensor devices designed to respond to magnetic fields to produce a proportionate amount of electrical output. It thus becomes useful for measuring the strength of magnetic fields, and in applications that require an output switched through magnetic triggers. The modern hall effect ICs are designed with immunity to most mechanical […]
Archives for March 2014
Make this Red LED Sign Circuit
The post presents a simple transformerless red LED sign circuit which can be made even by a novice. The circuit uses only a few high voltage capacitors, two resistors, and a few red LEDs…. nothing more. The circuit idea and the images were submitted by Mr. John Hungerford. The following email was sent to me […]