On 3 June 2011 14:14, DF3KV <df3kv@t-online.de> wrote:
> I never saw that happen with a constant voltage transformer (transducer).
> Are you sure yours is based on transformer/choke and not an inverter?
>
> However, how do you measure AC with a moving coil meter?
>
> 73
> Peter, DJ7WW
My understanding was the constant voltage transformers basically
saturated the core, which limits the output voltage. If so, then they
would indeed produce a rather distorted waveform, as the core would be
non-linear.
Dave
>
> -----Original Message-----
> From: amps-bounces@contesting.com [mailto:amps-bounces@contesting.com] On
> Behalf Of John G3UUT
>
> Another caution, this time about constant voltage transformers. I had
> one of these and tried to use it to stabilise the mains to a signal
> generator to improve drift. It sort of worked but the main problem with
> it was that it distorted the mains waveform quite badly, sufficiently so
> that a normal moving coil meter read very inaccurately
>
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