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

Go Back   UK Vintage Radio Repair and Restoration Discussion Forum > Specific Vintage Equipment > Vintage Amateur and Military Radio

Notices

Vintage Amateur and Military Radio Amateur/military receivers and transmitters, morse, and any other related vintage comms equipment.

Closed Thread
 
Thread Tools
Old 19th May 2017, 12:04 pm   #41
HamishBoxer
Dekatron
 
HamishBoxer's Avatar
 
Join Date: Aug 2007
Location: W.Butterwick, near Doncaster UK.
Posts: 5,303
Default Re: GEC BRT402D Receiver.

Of Ed Dinning can rewind subject to cost I guess.
__________________
G8JET
HamishBoxer is online now  
Old 19th May 2017, 1:27 pm   #42
G4XWDJim
Octode
 
G4XWDJim's Avatar
 
Join Date: Oct 2008
Location: Rustington, West Sussex, UK.
Posts: 1,074
Default Re: GEC BRT402D Receiver.

Ken,

Could you use an AR88 transformer 330 - 0 - 330 / 5V 2A / 6.4v 4A with or without mods.

Jim
G4XWDJim is offline  
Old 19th May 2017, 1:48 pm   #43
Colinaps
Pentode
 
Colinaps's Avatar
 
Join Date: Jul 2009
Location: Roxburghshire, UK.
Posts: 132
Default Re: GEC BRT402D Receiver.

An ideal opportunity to knock up a more conventional PSU, the only downside being that you won't be able to boil a kettle on it.

73, Colin.

Colinaps is offline  
Old 19th May 2017, 7:00 pm   #44
Silicon
Heptode
 
Join Date: Jun 2007
Location: Coulsdon, London, UK.
Posts: 737
Default Re: GEC BRT402D Receiver.

The original 6.3V heaters need about 5 Amps in the original circuit. More current is needed for the bulbs.

If you remove the voltage smoothing valve V12 (the K81) and fit LED panel lights you may reduce the heater current to 4 Amps.

The original HT current was about 167mA. If you remove the smoothing valve and the S130 stabiliser valve you will reduce the HT current by about 67mA.

By using the options of choke input filter, solid state rectifier and regulators (250V and 120V) and running bulbs off the 5V rectifier heater winding, it would allow some flexibility in the type of transformer you could use.
Silicon is offline  
Closed Thread

Thread Tools



All times are GMT. The time now is 8:02 pm.


All information and advice on this forum is subject to the WARNING AND DISCLAIMER located at https://www.vintage-radio.net/rules.html.
Failure to heed this warning may result in death or serious injury to yourself and/or others.


Powered by vBulletin®
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Copyright ©2002 - 2017, Paul Stenning.