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HOW TO WORK PLC ?

A PLC works by continually scanning a program. We can think of this scan cycle as consisting of 3 important steps. There are typically more than 3 but we can focus on the important parts and not worry about the others. Typically the others are checking the system and updating the current internal counter and […]

Visio Circuit Schematic Symbols with the Amateur Radio Relay

Visio Circuit Schematic Symbols

Making DIRECT PCB PLOTTING

This article is about another method I tried and had 100% success first time. The object is to modify an old plotter pen so that you can draw direct onto the PCB material itself. No photography, just a new pen. All you have to do is the use one of those Faber Castell S overhead […]

Low Power Quad Operational Amplifier

Low Power Quad Operational Amplifier using LM124, LM224, LM324, LM2902   Low Power Quad Operational Amplifier using LM124, LM224, LM324, LM2902 Description The LM124 series consist of four independent, high gain, internally frequency compensated operational amplifiers Features supply to 32V or dual supplies 15V to 16V

Headphones Circuit

Headphones Circuit using SMI1458 1458 Headphones Circuit using SMI1458, 1458

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