UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - 232L bakelite telephone and No 26 Bellset

kevcurr63 · 13th Jun 2013, 8:51 pm

Hi to all, I have just joined the site and have read a number of posts relating to telephones, though I have a very basic grasp on the subject. However thanks to information posted on here and elsewhere I have successfully rewired my 706/L phone, installed a 3.3k ohm Resistor and an original No. 205 rectifier for it to fully work on a BT plug and socket, leaving just the on/off bell switch to wire up.

I have a few other phones yet to be converted, as regards the No. 205 rectifier my understanding from other posts is you can use two 1N4001 diodes back to back with one reversed to serve the same purpose, is there a specific type as I require?

If anyone can point me in the right direction, as it would be greatly appreciated many thanks in advance :- )

13th Jun 2013, 8:51 pm	#22
kevcurr63 Retired Dormant Member Join Date: Jun 2013 Location: Dundee, UK. Posts: 21	Re: 232L bakelite telephone and No 26 Bellset Hi to all, I have just joined the site and have read a number of posts relating to telephones, though I have a very basic grasp on the subject. However thanks to information posted on here and elsewhere I have successfully rewired my 706/L phone, installed a 3.3k ohm Resistor and an original No. 205 rectifier for it to fully work on a BT plug and socket, leaving just the on/off bell switch to wire up. I have a few other phones yet to be converted, as regards the No. 205 rectifier my understanding from other posts is you can use two 1N4001 diodes back to back with one reversed to serve the same purpose, is there a specific type as I require? If anyone can point me in the right direction, as it would be greatly appreciated many thanks in advance :- ) Last edited by Station X; 13th Jun 2013 at 10:23 pm. Reason: Forum rule compliance.