Rediffusion R500 Receiver - UK Vintage Radio Repair and Restoration Discussion Forum

plumbob · 21st Oct 2008, 11:08 pm

Hi,
Was wondering if anyone has any information on the Rediffusion R500 Receiver. I am after the configuration of the power supply toroidal which I believe is marked up SR/T 2770. Basically I need to know what the different cables on the transformer are i.e. primary winding, secondary winding.

The colours are as follows :-

White, Orange, Red, Brown, Black
White, Orange, Red, Brown, Black (sleeved with a white sleeve on each cable)
I think this is the primary winding with multitaps upto 110/115V on each group, therefore joining together will give primary input 230/240V

2 Thick Blue, 2 Pink, 2 Purple, 2 Yellow, 1 Green, 1 Grey - I think these are various secondaries, some are connected together as the same windings; I can't remember which though and I have no multimeter handy as I type.

If anyone has a service manual and is able to give the various winding identities and voltage tappings, it would be very helpful.

Thanks in advance

Bob

Station X · 21st Oct 2008, 11:16 pm

See this thread:-

https://www.vintage-radio.net/forum/...ead.php?t=7046

21st Oct 2008, 11:08 pm	#1
plumbob Retired Dormant Member Join Date: Oct 2008 Location: Crawley Posts: 1	Rediffusion R500 Receiver Hi, Was wondering if anyone has any information on the Rediffusion R500 Receiver. I am after the configuration of the power supply toroidal which I believe is marked up SR/T 2770. Basically I need to know what the different cables on the transformer are i.e. primary winding, secondary winding. The colours are as follows :- White, Orange, Red, Brown, Black White, Orange, Red, Brown, Black (sleeved with a white sleeve on each cable) I think this is the primary winding with multitaps upto 110/115V on each group, therefore joining together will give primary input 230/240V 2 Thick Blue, 2 Pink, 2 Purple, 2 Yellow, 1 Green, 1 Grey - I think these are various secondaries, some are connected together as the same windings; I can't remember which though and I have no multimeter handy as I type. If anyone has a service manual and is able to give the various winding identities and voltage tappings, it would be very helpful. Thanks in advance Bob

21st Oct 2008, 11:16 pm	#2
Station X Moderator Join Date: Jan 2003 Location: Ipswich, Suffolk, IP4, UK. Posts: 21,289	Re: Rediffusion R500 Receiver See this thread:- https://www.vintage-radio.net/forum/...ead.php?t=7046 __________________ Graham. Forum Moderator Reach for your meter before you reach for your soldering iron.