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 2:40 pm by Dave Moll	66	53,368
	Sticky: AF11x transistors, 'tin whisker' problems and solutions. Darren-UK (15th Nov 2011)	11th Feb 2018 4:35 pm by AC/HL	2	33,869
	Sticky: Fuses ( 1 2 3) Radio_Dave (8th Jan 2007)	1st Feb 2016 10:11 pm by trobbins	53	83,576
	Sticky: Capacitors in series - pitfalls? ( 1 2 3) Andy Day (29th Aug 2007)	1st Jul 2015 5:32 pm by Herald1360	58	63,073
	Sticky: Battery box and socket details. ( 1 2) neon indicator (28th Jun 2011)	25th Jun 2015 8:19 pm by TonyDuell	36	41,496
	Sticky: Testing a transformer for shorted turns Merlin (24th Jan 2007)	30th Nov 2014 6:34 pm by Eddy_Stone	16	43,663
	Sticky: Grid coupling Capacitor aka "That" cap. ( 1 2) Courtney Louise (25th Aug 2011)	25th Mar 2014 3:32 pm by Station X	34	42,994
	Sticky: Testing an output transformer Radio_Dave (30th Jul 2007)	29th Apr 2013 6:01 pm by Herald1360	11	38,113
	Sticky: Replacement non-electrolytic capacitor values. Station X (2nd Oct 2012)	2nd Oct 2012 9:00 am by Station X	0	30,760
	Sticky: Class X2 and Class Y Capacitors. Station X (16th Dec 2010)	16th Dec 2010 7:40 pm by Station X	0	24,248
	Sticky: Testing transistors. Mike Phelan (27th Oct 2010)	27th Oct 2010 11:23 am by Mike Phelan	0	32,543
	Sticky: Testing transistors - analogue version DAVEHALL (16th May 2010)	7th Sep 2010 12:51 pm by Lee.Wilkerson	3	18,114
	Sticky: Testing Transistors. Station X (20th Jun 2009)	20th Jun 2009 3:57 pm by Station X	3	21,623
Normal Threads
	Bush VHF80C valve heaters ( 1 2) Spencervs (20th Nov 2023)	Today 9:14 pm by Sideband	24	860
	Colour coding for valve base wires sparkymike (Today)	Today 7:01 pm by TonyDuell	6	211
	Temperature compensation for silicon push-pull dominicbeesley (Yesterday)	Today 2:57 pm by dominicbeesley	6	252
	Sensible Substitute for RCA 40673 ? E93AFAN (30th Nov 2023)	Today 2:34 pm by DrStrangelove	15	645
	Hacker 12V Power Supply DonaldStott (2nd Dec 2023)	Today 1:08 pm by fetteler	9	372
	Anyone seen a pot like this, built in reduction drive. CambridgeWorks (29th Nov 2023)	Yesterday 12:11 pm by G6fylneil	9	377
	HP 1901-0518 diode factory (29th Nov 2023)	2nd Dec 2023 10:08 pm by factory	6	291
	Roasted diode ID ITAM805 (30th Nov 2023)	2nd Dec 2023 7:52 pm by ITAM805	4	304
	How Common is Retrospective Failure from ESD Damage? knobtwiddler (28th Nov 2023)	2nd Dec 2023 1:21 pm by Radio Wrangler	18	686
	Mullard two valve pre-amp sparkymike (2nd Dec 2023)	2nd Dec 2023 12:58 pm by sparkymike	0	94
	Bridge rectifier tripping RCD puzzle. Tractorfan (29th Nov 2023)	1st Dec 2023 9:56 pm by Tractorfan	9	443
	IRF840 FET variations SiriusHardware (25th Nov 2023)	1st Dec 2023 3:58 pm by G6ONEDave	11	520
	Smooth antenna socket on AR88 Martin G7MRV (1st Dec 2023)	1st Dec 2023 1:49 pm by G6Tanuki	3	144
	Wafer switches sparkymike (1st Dec 2023)	1st Dec 2023 1:19 pm by sparkymike	0	127
	Hookup wire - what do you use? ( 1 2) rmorti (26th Nov 2023)	30th Nov 2023 4:43 pm by knobtwiddler	26	802
	MR91H zener diode data petervk2mlg (29th Nov 2023)	29th Nov 2023 10:44 pm by petervk2mlg	9	269
	HT/LT plugs and sockets sparkymike (17th Nov 2023)	29th Nov 2023 8:08 pm by Ed_Dinning	13	606
	Veroboard; anyone put components on the copper side? Bazz4CQJ (27th Nov 2023)	29th Nov 2023 1:15 am by Red to black	15	533
	vintage style capacitors sparkymike (28th Nov 2023)	28th Nov 2023 8:43 pm by sparkymike	2	186
	HEF4051BT - Pin 1? ITAM805 (27th Nov 2023)	28th Nov 2023 11:18 am by ITAM805	2	326