It *would* be 10k or (20 K) ohms/volt of range for DC - more like 5K/Volt on the AC ranges. So, on the 300 V range figure figure: 300 * 5,000 = 1.5 MOhm input R Test: I just checked (actually measured it!) this on my old Trtplett 630 (on the 300 v range) and this bears out (it's true!) ... RF Jim ----- Original Message ----- From: "William Chops Westfield" To: Sent: Thursday, November 07, 2002 10:46 AM Subject: Re: [PIC] What have you designed using PIC? > any good VTVM or high impedance meter would have shown the full voltage, > however an old circuit powered meter is a low impedance device. > > Hmm. A raw circuit-powered analog meter is a "low impedance device" > compared to a modern digital voltmeter, but I'll bet most are still rather > high-impedance compared to a string of 14V light bulbs, so you'll probably > still read pretty close to 240V at your "missing bulb" location. IIRC, my > last analog meter had an impedence of about 10k ohms (or was that 10k > ohms/volt of range?) > > BillW > > -- > http://www.piclist.com hint: To leave the PICList > mailto:piclist-unsubscribe-request@mitvma.mit.edu > > -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu