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[OM] Re: Flash voltages

Subject: [OM] Re: Flash voltages
From: Richard Ociepka <ociepka@xxxxxxxxxxxxxx>
Date: Mon, 28 Jan 2008 16:21:03 -0500
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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