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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
EF37A as AF pre-amp ( 1 2) Neil Purling (4th Dec 2010)	25th Feb 2012 9:57 pm by Neil Purling	20	11,111
Single-ended Push-Pull ( 1 2 3) ukcol (24th Jan 2014)	27th Jan 2014 3:12 pm by G8HQP Dave	45	11,024
Which oscilloscope to buy? ( 1 2 3 4) Don_Zalmrol (12th Nov 2012)	20th Dec 2012 3:10 pm by ColinTheAmpMan1	65	10,794
AF117 replacement? ( 1 2 3) Goldieoldie (21st Feb 2015)	26th Mar 2015 12:36 am by Herald1360	45	10,757
Use of Class X2 Capacitors as Droppers. ( 1 2 3 4 5 6) 'LIVEWIRE?' (26th Jan 2013)	11th Mar 2013 12:59 am by Herald1360	103	10,730
Electret microphones with very high frequency response? (~120kHz) Martin G7MRV (2nd Jan 2014)	5th Dec 2014 2:16 am by Mike. Watterson	17	10,542
SMPS experiments ( 1 2 3 4) dominicbeesley (20th Aug 2008)	23rd Dec 2013 2:42 pm by dominicbeesley	71	10,422
Removing a field coil speaker and replacing it with permanent magnet mrmagnetophon (5th Jan 2013)	10th Jan 2013 1:44 am by Lucien Nunes	18	10,401
Tantalum capacitors and reliability. ( 1 2 3) ukcol (7th Jan 2012)	12th Oct 2014 11:14 pm by Refugee	45	10,377
Ever Ready No 800 markjmichaels (28th Dec 2010)	10th Oct 2011 12:39 pm by michael cumming	16	10,330
Pitch for potting transformers ( 1 2) GrimJosef (13th Feb 2009)	21st Feb 2009 10:26 am by Brian R Pateman	22	10,309
Comparison of 50 and 75 Ohm BNC connectors. ( 1 2) MichaelR (11th Nov 2009)	18th Nov 2009 12:25 pm by G8HQP Dave	39	10,151
Cutting ferrite rods jim_jobe (28th Feb 2007)	9th Mar 2007 12:40 pm by jim_jobe	13	10,129
My first push-pull vacuum amplifier ( 1 2 3 4) Miguel Lopez (5th Mar 2015)	6th May 2016 6:04 am by Diabolical Artificer	75	10,114
Alternatives to AC187/AC188 O/P pair? paulsherwin (8th Oct 2007)	17th Oct 2007 8:22 am by Mike Phelan	9	9,935
Partridge Output Transformer M0FYA Andy (20th Dec 2009)	20th Dec 2009 9:37 pm by Alan Stepney	8	9,868
Magic Eye Replacement - An alternative approach ( 1 2 3) Colin Boggis (12th Jul 2013)	22nd Apr 2016 6:19 pm by ThePillenwerfer	40	9,860
germanium diode - all gone ? ChristianFletcher (11th Dec 2006)	22nd Dec 2006 11:43 am by Tom_I	17	9,815
Tufnol V Paxolin ekcopyephilips (18th Feb 2013)	18th Feb 2013 5:00 pm by Guest	7	9,760
EL84/UL84 How do they differ? Tractorfan (8th Nov 2008)	12th Nov 2008 8:59 pm by Tractorfan	12	9,755