UK Vintage Radio Repair and Restoration Powered By Google Custom Search Vintage Radio and TV Service Data

Go Back   UK Vintage Radio Repair and Restoration Discussion Forum > Specific Vintage Equipment > Other Vintage Household Electrical or Electromechanical Items


Other Vintage Household Electrical or Electromechanical Items For discussions about other vintage (over 25 years old) electrical and electromechanical household items. See the sticky thread for details.

Closed Thread
Thread Tools
Old 2nd Jun 2010, 6:42 pm   #1
Retired Dormant Member
Join Date: Jan 2007
Location: Westbury, Wiltshire, UK.
Posts: 2,451
Default Shaver sockets?

Are these isolated? I'm trying to find a transformer suitable for use to knock up a 120V supply for a battery set. Need about 15-20mA.

Boom is offline  
Old 2nd Jun 2010, 6:47 pm   #2
Kat Manton
Retired Dormant Member
Kat Manton's Avatar
Join Date: Jul 2005
Location: West Yorkshire, UK.
Posts: 1,700
Default Re: Shaver sockets?

Hi Dave,

Quick answer; yes, as far as I know, they all are.

If they're intended for installation in a bathroom, regulations insist on it.

Cheers, Kat
Kat Manton is offline  
Old 2nd Jun 2010, 7:38 pm   #3
Phil G4SPZ
Phil G4SPZ's Avatar
Join Date: Apr 2005
Location: Bewdley, Worcestershire, UK.
Posts: 4,728
Default Re: Shaver sockets?

They are also designed to saturate and hence reduce the amount of current available under fault or overload conditions. A quick Google search suggests that they are double-wound isolating transformers rated at 20VA. 20VA at 110 volts equates to 180mA, sufficient for your needs.

They are also not cheap - £20-30 - unless you can find a scrap unit from which to extract the transformer.

Optimist [n]: One who is not in possession of the full facts
Phil G4SPZ is offline  
Old 2nd Jun 2010, 8:19 pm   #4
Join Date: Jul 2008
Location: Hereford, UK.
Posts: 717
Default Re: Shaver sockets?

I have used these occasionally, removed from units bought at car boot sales for £1-2, they usually run very hot, even with no load, some have a device in series with either primary or secondary windings, presumably a thermistor or similar current limiting device but I havn't tried these ones
electrogram is online now  
Old 2nd Jun 2010, 9:10 pm   #5
Join Date: Jan 2004
Location: Newcastle upon Tyne, Tyne & Wear, UK.
Posts: 8,136
Default Re: Shaver sockets?

These devices are only intended for intermittant use, on a low duty cycle. So if run at near full load for any length of time will get pretty hot, and may even activate any internal thermal fuses fitted.

Ed_Dinning is offline  
Closed Thread

Thread Tools

All times are GMT +1. The time now is 10:16 am.

All information and advice on this forum is subject to the WARNING AND DISCLAIMER located at
Failure to heed this warning may result in death or serious injury to yourself and/or others.

Powered by vBulletin®
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Copyright ©2002 - 2023, Paul Stenning.