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Homebrew Equipment A place to show, design and discuss the weird and wonderful electronic creations from the hands of individual members. |
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21st Sep 2006, 9:59 pm | #21 |
Nonode
Join Date: Dec 2002
Location: Coulsdon, Surrey, UK.
Posts: 2,135
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Re: output valve choice
The Mazda 6P28 should be readily available, and cheap ! - It was a TV line valve but it has a 6v heater - looks quite good and has a top cap - A friend of mine years ago built an audio amp with one - sounded quite good if I recall - If I Haven't binned mine you're more than welcome to them both - There's probably a pic on the web somewhere, ..... Andy
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21st Sep 2006, 10:55 pm | #22 |
Dekatron
Join Date: Jan 2003
Location: Bradford on Avon, Wiltshire, UK.
Posts: 3,310
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Re: output valve choice
I would go with the 12E1. They are impressive enough NOT lit!!
http://www.r-type.org/exhib/aad0244.htm I have some peculiar ex GPO output valves with a British 7 pin base and 5 volt heater. The CV number slips my mind for the moment but ISTR the anode current is 40-50 mA. They are about the size of EL33s. Let me know if you want a couple. I will supply more data if need be. (I have a feeling the comercial number is A819 or something similar.) I don't think I'll be using them for anything soon!
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"Nothing is as dangerous as being too modern;one is apt to grow old fashioned quite suddenly." |
27th Sep 2006, 1:54 am | #23 |
Dekatron
Join Date: Jan 2003
Location: Bradford on Avon, Wiltshire, UK.
Posts: 3,310
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Re: output valve choice
UPDATE.
CV1722/A901. 5 volt heater power tetrode.
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"Nothing is as dangerous as being too modern;one is apt to grow old fashioned quite suddenly." |