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Archives for February, 2014

Overload Indicator and overvoltage protection schematic

Overload Indicator and overvoltage protection schematic

tube Amplifier circuit for Guitar

tube Amplifier circuit for Guitar using 12AX7, 6BM8, 5Y3GT

Booster Antenna

Booster Antenna Circuit Antennas that are much shorter than 1/4 wavelength present a very small and highly relative impedance that is dependent on the received frequency. It is difficult to match impedances over a decade of frequency coverage. Instead, input stage Q1 is an FET source-follower. A high-impedance input successfully bridges antenna characteristics at any […]

Introduction to PCB Manufacture for Hobby

Introduction to PCB Manufacture for Hobby

Audio Generator Circuit

Audio Generator Circuit using NPN TR

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