High-Impedance Audio Buffer With JFETThe buffer circuit described here is useful in enhancing the AC input impedance of audio amplifiers used with pickups in musical instruments. Signal sources for amplifiers and passive pickups for electric guitars require very high-impedance of over 5-mega-ohm. This can be achieved easily with junction field effect transistor (JFET) but may require special design of the printed circuit board (PCB), appropriate construction techniques of the box, proper cables and connectors. This project provides a solution for a high-impedance, low-cost, low-quiescent current, buffer-follower based on PN4393 JFET. - Study24x7
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Rohit Nagar
01 Jan 1970 05:30 AM study24x7 study24x7

High-Impedance Audio Buffer With JFET

The buffer circuit described here is useful in enhancing the AC input impedance of audio amplifiers used with pickups in musical instruments. Signal sources for amplifiers and passive pickups for electric guitars require very high-impe...

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