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From: Mark C. Stephens ma...@non-stop.com.au
To: Robert Atkinson robert8...@yahoo.co.uk; Discussion of precise time and
frequency measurement time-nuts@febo.com
Sent: Saturday, 6 July 2013, 22:39
Subject: RE: [time-nuts] HP 5370B dropping mains voltage
How Does that Work
5370B dropping mains voltage
Hi Marki,
Dropping the mains voltage is easy. Get a mains to low voltage transformer.
Connect the primary across the mains and the secondary in series opposition
(out of phase) with the mains supply. Foar example a 100VA 12V transformer will
drop your mains
...@febo.com] On Behalf
Of Robert Atkinson
Sent: Sunday, 7 July 2013 12:57 AM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] HP 5370B dropping mains voltage
Hi Marki,
Dropping the mains voltage is easy. Get a mains to low voltage transformer.
Connect
=102 Volts). Had I connected the Dry-Disk
transformer's winding in series and in phase I would've had 138 volts.
I hope this helps.
Burt, K6OQK
Subject: Re: [time-nuts] HP 5370B dropping mains voltage
How Does that Work Robert?
I mean why out of phase?
-Original Message-
From: time
July 2013 9:28 AM
To: time-nuts@febo.com
Subject: [time-nuts] HP 5370B dropping mains voltage...
This is an old trick that I learned many years ago. By taking a transformer,
driving its primary from the mains and then feeding that transformer's
secondary voltage in series (either in phase or out
Using a common filament transformer as a buck/boost reduces
the insulation requirement between the primary and secondary.
It does this by connecting the primary to the secondary.
-Chuck Harris
Mark C. Stephens wrote:
The elephant in the room thing with me is SAFETY :)
I mean, can this be a
On 7/6/13 5:26 PM, Mark C. Stephens wrote:
The elephant in the room thing with me is SAFETY :)
I mean, can this be a fire hazard, what about the insulation breakdown on the
secondary winding etc..
Most transformers have a voltage rating on ALL windings that is greater
than several times
@febo.com
Sent: Saturday, July 6, 2013 8:26 PM
Subject: Re: [time-nuts] HP 5370B dropping mains voltage...
The elephant in the room thing with me is SAFETY :)
I mean, can this be a fire hazard, what about the insulation breakdown on the
secondary winding etc
] On Behalf
Of Burt I. Weiner
Sent: Sunday, 7 July 2013 9:28 AM
To: time-nuts@febo.com
Subject: [time-nuts] HP 5370B dropping mains voltage...
This is an old trick that I learned many years ago. By taking a transformer,
driving its primary from the mains and then feeding that transformer's
and frequency measurement
Subject: Re: [time-nuts] HP 5370B dropping mains voltage
Hi Marki,
Dropping the mains voltage is easy. Get a mains to low voltage transformer.
Connect the primary across the mains and the secondary in series opposition
(out of phase) with the mains supply. Foar example
Hi
It's a rare filament transformer that does not have fairly substantial voltage
ratings on the secondary. They rated them so you could directly heat rectifiers
off of them. That could / would put the full high voltage winding onto the
filaments.
Bob
On Jul 6, 2013, at 9:02 PM, Jim Lux
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