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[OM] Re: Flash voltages

Subject: [OM] Re: Flash voltages
From: donholbrook@xxxxxxxxxxx (Don Holbrook)
Date: Tue, 29 Jan 2008 01:08:42 +0000
Thanks, Richard.  Never too old to learn.  Will acquire a new meter.

-------------- Original message -------------- 
From: Richard Ociepka <ociepka@xxxxxxxxxxxxxx> 

> Don Holbrook wrote: 
> > Many thanks to you and Wayne H., Chuck, Dan, & Wayne C. for responding. I 
> think you are correct about the analog meter I used (small Speery)(had to 
> give 
> the digital back on retirement). Today I dug out an old Simpson 260 and 
> rechecked a pair of T32s. Measured 10+V on the foot pins and 9+V from center 
> to 
> side contact. This was using the 100V scale. Weird thing was using other 
> scales: 25V scale = 6V, 10V scale = 3V, & 2.5V scale = pegged. Guess I'll 
> have 
> to get digitally modern. 
> 
> The Simpson 260 voltmeter has a 20,000 ohms per volt scale. 
> Multiply the full scale voltage by 20,000 ohms. 
> Note that the lower scale like 10v will have a small resistance which 
> means it puts more of a load on the circuit under test. 
> A digital voltmeter may only present 10 Megohm of load which is 
> virtually no load. 
> 
> Dick 
> 
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