David, If the voltage is over 0.6 volts, and is applied to the base of a transistor (assuming the emitter is grounded), the transistor will conduct. So my answer it less than 0.6 volts. OTOH, if the voltage is less than 0.3 volts, you will not be able to make diode forward conduction tests with the ohmmeter (those meters will usually have a diode test setting).
73, Don W3FPR On 2/21/2011 5:15 PM, David Christ wrote: > What is the maximum safe voltage? It must be less than 1.5 v as that > is what the Simpson and Triplett VOMs use in their lower ranges, but > how much less? > > David K0LUM > > At 3:47 PM -0800 2/20/11, Ron D'Eau Claire wrote: >> >> I trust you are using a DMM and not a VOM (like the old Simpsons, etc. - >> just about anything with a "wiggly needle" meter ;-) All of the older >> meters applied a dangerous amount of voltage to the circuit for today's >> solid state components >> >> Good luck! >> >> Ron AC7AC >> > ______________________________________________________________ > 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 > ______________________________________________________________ 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
