Latest News

  • Page updated 18 Mar 2020.

Effect on Coronavirus business activities - Updated - 18 Mar 2020.

Following recent government announcements we will temporarily stop manufacture.



All other activities will continue (e.g., purchasing, accounts etc).

If anything changes we will announce it here.

Production Loading - Updated - 18 Mar 2020.

Normal lead times are for delivery within 28 days.

  • Standard products - No Supply until further notice.
  • Customised products - No Supply until further notice.
  • Rewinds - No Supply until further notice.
  • Winding to drawing - No Supply until further notice.
  • Special products - No Supply until further notice.
  • Design work - Will continue without supply of paper or hardware items.

'BREXIT' Transitional arrangements - Updated - 14 Feb 2020.

As the UK Government has now defined the BREXIT process, we are taking standard product orders world-wide until further notice.
This may be changed in June 2020.
Note that Specials and Rewinds are always UK only.

Workshop roof - Updated - 14 Feb 2020.

Our production capability was affected by weather damage to our main workshop.
Now back in use with detail work to be done later in the year.

Mullard 3-3 HT Transformers - New - 12 Dec 2019.

  • Discontinuing simple primary versions.
  • Discontinuing alternative shapes.

However we are adding a single heater winding version (6.3V C-tap at 2A)

Website security - New - 11 Dec 2019.

Due to the somewhat unnecessary security scare warnings we have applied SSL (Secure Sockets Layer) verification through our host.
These means that our website address is now '' instead of ''.
We have implementented code in our website to automatically redirect you.

Price changes - Updated - 11 Aug 2019.

Due to improvements in manufacturing we have adjusted our prices from 11 Aug 2019:

  • Most standard product prices have been reduced

Some products will be discontinued.
Some new products will be introduced.

All product data sheets will be brought up to date over the next few weeks in the order VTL, VTS, VTP, VTH, VTT, VTC.

External Quality Audit - Updated - 04 Aug 2019.

We were succesfully audited for ISO9001:2015 on 31 Jul 2019 with no non-conformances as usual.

Website changes to clarify product supply - New - 04 Jul 2018.

As a result of discussions with our insurers we have changes some text details on the website to clarify the markets and products that we currently supply:

  • We do not supply product for Aircraft for flight
  • We do not supply product for Military use
  • We do not supply product to North America
  • We do not supply for Oil platforms
  • Industral product is only made to customer drawing
  • Military product quality is an indication of our ability not our approval

General Data Protection Regulation - New - 05 May 2018.

We have updated our data storage rules to comply with the General Data Protection Regulation 2015 which came into force in May 2018.
Our policy document is available on request.
NO customer or supplier data is supplied to any third party other than that which is necessary to process payments.
We are compliant with the PCI-DSS credit card rules and only store card details on paper for the duration of the order and warranty period, no such data is stored on computer at any time.

Alternative shapes - New - 10 Apr 2017.

For transformers with non square lamination cores we are introducing square stack cores as an alternative.
These are quicker to make and slightly more efficient.

Product reinstatement - Updated - 10 Apr 2017.

We have reinstated most of our previous transformers.

Transformer dimensions on data sheets - New - 08 Feb 2017.

It appears that the wrong dimensions are appearing on datasheets.
This is a software problem.
It will take a while to fix and reload all affected datasheets.
If you need the information pleaase e-mail us.

Credit card charges - New - 07 Apr 2013.

As we have never charged extra for card processing there are no changes in our prices as a result of the recent Credit Card charges directive.

Cookies - New - 26 May 2012.

In accordance with EU Directive 2009/136/EC section 66 we declare that we have no cookies on our website.
Links to other websites are out of our control and may have cookies.

  • © 2020 Variable Voltage Technology Ltd. Data Sheet Number DCW15219.
  • Issue 108 - 18Mar2020 - X50626 - Y11727.