The latest revision of the schematic for the KPA500 TR Switch shows a Zener diode at the gate of Q4 in place of R3, the 100K resistor previously. Its obviously for gate protection. There are no markings on the schematic what this diode is although the spec sheet for the IRFSL9N60APBE does say the gate-source threshold is maximum of 4V. Anyone know what the value of this thing is before I just stuff in a 4v Zener?
Dr. William J. Schmidt - K9HZ J68HZ ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
