As I recall, 500 mV drop across a saturated 2N3906 is not unusual - I think all is well.
73, Don W3FPR On 3/15/2012 6:55 PM, [email protected] wrote: > Hi Don, > > Thanks for your answer. The output of the 8V voltage regulator is just > perfect (for a 10% device) - 7.98V. I was wondering why I get 500mV > voltage drop across Q1& Q2, but if you say that's OK, then I'm fine. > > Slightly offtopic - I had also another failure of 2N7000 - again in Control > Board, > but this time Q5 (sidetone generation). I again made the temporary fix with > BJT+33k resistor, until I order a batch of 2N7000s. Next time I mount those > picky MOSFETs, I'll try to put a tiny bare wire across all the pins for temp > protection... > > 73, > Nikolay (LZ1NRD) > > ------------------------------------- > Mail.bg: Безплатен e-mail адрес. Най-добрите характеристики на българския > пазар - 20 GB пощенска кутия, 1 GB прикрепен файл, безплатен POP3, мобилна > версия, SMS известяване и други. > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
