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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Threads in Forum : Components and Circuits

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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)	17th Aug 2025 8:14 am by markgengine	67	83,091
	Sticky: AF11x transistors, 'tin whisker' problems and solutions. Darren-UK (15th Nov 2011)	11th Feb 2018 3:35 pm by AC/HL	2	45,366
	Sticky: Fuses ( 1 2 3) Radio_Dave (8th Jan 2007)	1st Feb 2016 9:11 pm by trobbins	53	111,454
	Sticky: Capacitors in series - pitfalls? ( 1 2 3) Andy Day (29th Aug 2007)	1st Jul 2015 4:32 pm by Herald1360	58	91,180
	Sticky: Battery box and socket details. ( 1 2) neon indicator (28th Jun 2011)	25th Jun 2015 7:19 pm by TonyDuell	36	59,696
	Sticky: Testing a transformer for shorted turns Merlin (24th Jan 2007)	30th Nov 2014 5:34 pm by Eddy_Stone	16	57,817
	Sticky: Grid coupling Capacitor aka "That" cap. ( 1 2) Temporalnexus (25th Aug 2011)	25th Mar 2014 2:32 pm by Station X	34	61,934
	Sticky: Testing an output transformer Radio_Dave (30th Jul 2007)	29th Apr 2013 5:01 pm by Herald1360	11	51,567
	Sticky: Replacement non-electrolytic capacitor values. Station X (2nd Oct 2012)	2nd Oct 2012 8:00 am by Station X	0	42,332
	Sticky: Class X2 and Class Y Capacitors. Station X (16th Dec 2010)	16th Dec 2010 6:40 pm by Station X	0	34,995
	Sticky: Testing transistors. Mike Phelan (27th Oct 2010)	27th Oct 2010 10:23 am by Mike Phelan	0	43,544
	Sticky: Testing transistors - analogue version DAVEHALL (15th May 2010)	7th Sep 2010 11:51 am by Lee.Wilkerson	3	29,228
	Sticky: Testing Transistors. Station X (20th Jun 2009)	20th Jun 2009 2:57 pm by Station X	3	32,696
Normal Threads
	Anyone know anything about 3 gardners transformers I have pictures of? CambridgeWorks (12th Nov 2025)	Today 2:09 pm by Valvepower	11	465
	Bridge Rectifier clarification ( 1 2) John10b (11th Nov 2025)	Yesterday 5:20 pm by John10b	29	832
	3B22 Rectifier Valve bobhowe (9th Nov 2025)	13th Nov 2025 12:40 pm by bobhowe	4	323
	Swan SSB filter Jon_G4MDC (8th Nov 2025)	12th Nov 2025 8:55 pm by Jon_G4MDC	9	310
	Vigortronix transformers John_BS (6th Nov 2025)	11th Nov 2025 7:11 pm by John_BS	7	421
	Admiralty choke ID? Uncle Bulgaria (11th Nov 2025)	11th Nov 2025 4:06 pm by Uncle Bulgaria	0	95
	Cross-over capacitor replacements? Nick960 (7th Nov 2025)	10th Nov 2025 6:54 pm by ortek_service	6	424
	PYE o/p t/x manufacture in the 1950s Valvepower (20th Oct 2025)	9th Nov 2025 11:13 am by Valvepower	8	685
	LED substitutes for MES bulbs ( 1 2) Boulevardier (20th Oct 2025)	6th Nov 2025 10:19 am by knobtwiddler	33	1,629
	Question regarding removing audio tone from a minispot oscillator Jolly 7 (5th Nov 2025)	5th Nov 2025 11:44 pm by Jolly 7	3	233
	Where do I find components? Jameson (2nd Nov 2025)	3rd Nov 2025 3:25 pm by Diabolical Artificer	8	763
	Could someone test an EM87 for me? daviddeakin (3rd Nov 2025)	3rd Nov 2025 10:36 am by daviddeakin	0	237
	Carbon disk inside S.G.Brown amps circa 1922 RadioHist (22nd Oct 2025)	27th Oct 2025 4:03 pm by RadioHist	5	687
	AC 180K Germanium equivalent ? ( 1 2) paul1962 (10th Oct 2025)	22nd Oct 2025 5:21 am by FrankB	20	1,206
	Mullard tropical fish capacitor bennybrc (19th Oct 2025)	19th Oct 2025 10:11 am by bennybrc	2	419
	Reforming AC capacitors? ScottBouch (14th Oct 2025)	18th Oct 2025 4:25 pm by Craig Sawyers	11	663
	"Si" fuse label, German circuit diagram Uncle Bulgaria (16th Oct 2025)	17th Oct 2025 7:45 am by Radio Wrangler	4	448
	Loop Padder ? 60 oldjohn (8th Oct 2025)	16th Oct 2025 9:34 am by Andrew2	16	946
	Capacitors with escaping rubber bungs ScottBouch (13th Oct 2025)	14th Oct 2025 10:43 am by turretslug	7	531
	Mechanical counters (like Veeder) ScottBouch (8th Oct 2025)	13th Oct 2025 5:27 pm by Mark1960	7	547