Components and Circuits - UK Vintage Radio Repair and Restoration Discussion Forum

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Components and Circuits

Components and Circuits For discussions about component types, alternatives and availability, circuit configurations and modifications etc. Discussions here should be of a general nature and not about specific sets.

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	Rating Thread / Thread Starter	Last Post	Replies	Views
Sticky Threads
	Sticky: Battery case links and scans. ( 1 2 3 4) RadioHist (6th Jan 2014)	22nd Sep 2021 1:40 pm by Dave Moll	66	45,434
	Sticky: AF11x transistors, 'tin whisker' problems and solutions. Darren-UK (15th Nov 2011)	11th Feb 2018 3:35 pm by AC/HL	2	30,126
	Sticky: Fuses ( 1 2 3) Radio_Dave (8th Jan 2007)	1st Feb 2016 9:11 pm by trobbins	53	77,120
	Sticky: Capacitors in series - pitfalls? ( 1 2 3) Andy Day (29th Aug 2007)	1st Jul 2015 4:32 pm by Herald1360	58	57,461
	Sticky: Battery box and socket details. ( 1 2) neon indicator (28th Jun 2011)	25th Jun 2015 7:19 pm by TonyDuell	36	37,012
	Sticky: Testing a transformer for shorted turns Merlin (24th Jan 2007)	30th Nov 2014 5:34 pm by Eddy_Stone	16	40,344
	Sticky: Grid coupling Capacitor aka "That" cap. ( 1 2) Courtney Louise (25th Aug 2011)	25th Mar 2014 2:32 pm by Station X	34	38,881
	Sticky: Testing an output transformer Radio_Dave (30th Jul 2007)	29th Apr 2013 5:01 pm by Herald1360	11	34,832
	Sticky: Replacement non-electrolytic capacitor values. Station X (2nd Oct 2012)	2nd Oct 2012 8:00 am by Station X	0	27,558
	Sticky: Class X2 and Class Y Capacitors. Station X (16th Dec 2010)	16th Dec 2010 6:40 pm by Station X	0	21,561
	Sticky: Testing transistors. Mike Phelan (27th Oct 2010)	27th Oct 2010 10:23 am by Mike Phelan	0	29,422
	Sticky: Testing transistors - analogue version DAVEHALL (15th May 2010)	7th Sep 2010 11:51 am by Lee.Wilkerson	3	15,794
	Sticky: Testing Transistors. Station X (20th Jun 2009)	20th Jun 2009 2:57 pm by Station X	3	19,118
Normal Threads
	Repacking a capacitor can ( 1 2) Davidwkd71 (25th Jun 2022)	Yesterday 10:40 pm by Davidwkd71	20	532
	Run back timer John10b (Yesterday)	Yesterday 10:24 pm by Glowing Bits!	5	143
	Coils for valve IF's are any available like TOKO coils? AdrianH (Yesterday)	Yesterday 8:56 pm by AdrianH	0	48
	Roberts' tuning caps. Viscount (Yesterday)	Yesterday 8:38 pm by G6Tanuki	3	102
	Faulty valves - Scrap or keep? ( 1 2) PJL (28th Jun 2022)	Yesterday 7:22 pm by broadgage	21	538
	Capacitor info needed. kirstyd (28th Jun 2022)	Yesterday 6:59 pm by kirstyd	4	155
	Charging after NiCad=>LiIon swap llama (27th Jun 2022)	Yesterday 3:58 pm by The Philpott	15	365
	ИВ-12 tubes petervk2mlg (27th Jun 2022)	28th Jun 2022 6:13 pm by factory	4	298
	Reducing the mains voltage TonyDuell (25th Jun 2022)	28th Jun 2022 5:29 pm by G6fylneil	17	597
	3 Tube Ocean Hopper (battery type) ( 1 2) Spencervs (6th May 2022)	27th Jun 2022 1:20 pm by David G4EBT	25	894
	Morse super-regenerative oscillator circuit - but not... 6SN7WGTB (25th Jun 2022)	26th Jun 2022 7:42 am by 6SN7WGTB	7	237
	J2907-TR3 Alternative veedub565 (23rd Jun 2022)	24th Jun 2022 8:13 pm by Radio Wrangler	6	246
	What is the device below the co-ax aerial type socket DMcMahon (23rd Jun 2022)	24th Jun 2022 5:49 pm by DMcMahon	10	459
	Output impedance of Pantry Tx circuit 6SN7WGTB (17th Jun 2022)	24th Jun 2022 6:27 am by 6SN7WGTB	13	484
	What is this odd addition to mains transformer? retailer (23rd Jun 2022)	24th Jun 2022 1:28 am by retailer	3	317
	Cheap digital meters. ( 1 2) joebog1 (16th Mar 2021)	23rd Jun 2022 9:00 pm by joebog1	25	1,529
	HT transformers with extra low-I higher-V winding - what were they for ? GrimJosef (19th Jun 2022)	23rd Jun 2022 4:30 pm by GrimJosef	17	625
	What makes EF86 noisy? ( 1 2 3) cathoderay57 (17th Jun 2022)	23rd Jun 2022 12:53 pm by cathoderay57	48	1,400
	Help needed with electrolytics Davidwkd71 (22nd Jun 2022)	22nd Jun 2022 11:12 pm by Boulevardier	3	245
	Headphones mystery Pete_kaye (18th Jun 2022)	21st Jun 2022 8:00 pm by Silicon	9	659