Hawes Amplifier Archive by James T. Hawes, AA9DT
FET Preamplifier FAQs, Part 1

Frequently Asked Questions

Don Tillman brought up several excellent questions about the JFET amplifier. I have a little different take on these questions. For you half-dozen supporters of www.hawestv.com, here are my five cents. I've also added one or two questions of my own. To read my answer, click a question below.

PREAMP BASICS


ABOUT RESISTORS


MODIFYING & TROUBLESHOOTING


POWER AMPLIFIERS


ARDUINO MICROCONTROLLER INTERFACES


OTHER PREAMPLIFIERS







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Schematic: Generic JFET preamp



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WARNING. This is your project. Your achievement is entirely yours. I assume no responsibility for your success in using methods on these pages. If you fail, the same is true. I neither make nor imply any warranty. I don't guarantee the accuracy or effectiveness of these methods. Parts, skill and assembly methods vary. So will your results. Proceed at your own risk.

WARNING. Electronic projects can pose hazards. Soldering irons can burn you. Chassis paint and solder are poisons. Even with battery projects, wiring mistakes can start fires. If the schematic and description on this page baffle you, this project is too advanced. Try something else. Again, damages, injuries and errors are your responsibility. — The Webmaster

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